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Sample records for www.revistas.ufg.br

  1. Welding abilities of UFG metals

    Science.gov (United States)

    Morawiński, Łukasz; Chmielewski, Tomasz; Olejnik, Lech; Buffa, Gianluca; Campanella, Davide; Fratini, Livan

    2018-05-01

    Ultrafine Grained (UFG) metals are characterized by an average grain size of welded joints with similar properties to the base of UFG material are crucial for the production of finished engineering components. Conventional welding methods based on local melting of the joined edges cannot be used due to the UFG microstructure degradation caused by the heat occurrence in the heat affected zone. Therefore, the possibility of obtaining UFG materials joints with different shearing plane (SP) positions by means of friction welded processes, which do not exceed the melting temperature during the process, should be investigated. The article focuses on the Linear Friction Welding (LFW) method, which belongs to innovative welding processes based on mixing of the friction-heated material in the solid state. LFW is a welding process used to joint bulk components. In the process, the friction forces work due to the high frequency oscillation and the pressure between the specimens is converted in thermal energy. Character and range of recrystallization can be controlled by changing LFW parameters. Experimental study on the welded UFG 1070 aluminum alloy by means of FLW method, indicates the possibility of reducing the UFG structure degradation in the obtained joint. A laboratory designed LFW machine has been used to weld the specimens with different contact pressure and oscillation frequency.

  2. All rights reserved and www.bioline.org.br/ja Estimation of exit ...

    African Journals Online (AJOL)

    ADOWIE PERE

    and www.bioline.org.br/ja. Estimation of exit temperatures in the isentropic compression of real gases. 1 ..... other thermodynamic properties can be calculated within the framework of ... of negative compressibility) has no physical significance.

  3. Analysis on dynamic tensile extrusion behavior of UFG OFHC Cu

    Science.gov (United States)

    Park, Kyung-Tae; Park, Leeju; Kim, Hak Jun; Kim, Seok Bong; Lee, Chong Soo

    2014-08-01

    Dynamic tensile extrusion (DTE) tests with the strain rate order of ~105 s-1 were conducted on coarse grained (CG) Cu and ultrafine grained (UFG) Cu. ECAP of 16 passes with route Bc was employed to fabricate UFG Cu. DTE tests were carried out by launching the sphere samples to the conical extrusion die at a speed of ~475 m/sec in a vacuumed gas gun system. UFG Cu was fragmented into 3 pieces and showed a DTE elongation of ~340%. CG Cu exhibited a larger DTE elongation of ~490% with fragmentation of 4 pieces. During DTE tests, dynamic recrystallization occurred in UFG Cu, but not in CG Cu. In order to examine the DTE behavior of CG Cu and UFG Cu under very high strain rates, a numerical analysis was undertaken by using a commercial finite element code (LS-DYNA 2D axis-symmetric model) with the Johnson - Cook model. The numerical analysis correctly predicted fragmentation and DTE elongation of CG Cu. But, the experimental DTE elongation of UFG Cu was much smaller than that predicted by the numerical analysis. This difference is discussed in terms of microstructural evolution of UFG Cu during DTE tests.

  4. Influence of UFG structure formation on mechanical and fatigue properties in Ti-6Al-7Nb alloy

    Science.gov (United States)

    Polyakova, V. V.; Anumalasetty, V. N.; Semenova, I. P.; Valiev, R. Z.

    2014-08-01

    Ultrafine-grained (UFG) Ti alloys have potential applications in osteosynthesis and orthopedics due to high bio-compatibility and increased weight-to- strength ratio. In current study, Ti6Al7Nb ELI alloy is processed through equal channel angular pressing-conform (ECAP-Conform) and subsequent thermomechanical processing to generate a UFG microstructure. The fatigue properties of UFG alloys are compared to coarse grained (CG) alloys. Our study demonstrates that the UFG alloys with an average grain size of ~180 nm showed 35% enhancement of fatigue endurance limit as compared to coarse-grained alloys. On the fracture surfaces of the UFG and CG samples fatigue striations and dimpled relief were observed. However, the fracture surface of the UFG sample looks smoother; fewer amounts of secondary micro-cracks and more ductile rupture were also observed, which testifies to the good crack resistance in the UFG alloy after high-cyclic fatigue tests.

  5. Visibilidad internacional de las revistas iberoamericanas de Bibliotecología y Documentación

    Directory of Open Access Journals (Sweden)

    Herrero Solana, Víctor

    2008-06-01

    Full Text Available The degree of international visibility is an important indicator about the quality of a journal. In this study we analyze the citation of Ibero- American journals in Library and Information Science (LIS. To do this we minning the Web of Science (WOS in order to retrieve the different citation forms for all journals. The results are presented in many charts.<br>>El grado de visibilidad internacional es un indicador importante sobre la calidad de una revista. En este estudio analizamos la citación de revistas Iberoamericanas en Bibliotecología y Documentación (ByD. Para lograr esto fue revisado el Web of Science (WOS con el objetivo de recuperar las diferentes formas con que cada revista fue citada. Los resultados se presentan en varias gráficas.

  6. Dissemination of German Medicine in Spain and Latin America:The Revista Médica de Hamburgo and the Revista Médica Germano-Ibero-Americana (1920-1933

    Directory of Open Access Journals (Sweden)

    Romero Sá, Magali

    2010-06-01

    Full Text Available This article presents the development of the journals Revista Médica de Hamburgo and Revista Médica Germano-Ibero-Americana, which were created to promote and disseminate the German science among the medical community in Latin America and Spain between the two World Wars. Shaken by the loss of Germany’s colonies in Africa, the difficulties faced due to post-war economy, and the restrictions imposed by the armistice, the Germans sought to restore their cultural and scientific prestige through such initiative.<br>>El trabajo aborda la trayectoria de la Revista Médica de Hamburgo (RMH y la Revista Médica Germano-Ibero-Americana (RMGIA, publicaciones creadas para promover y difundir la ciencia alemana entre las comunidades médicas de América Latina y España en el contexto de entreguerras. Sacudidos por la pérdida de las colonias en África, por las dificultades enfrentadas por la economía y por las condiciones impuestas por el armisticio, los alemanes pretendían con esa iniciativa recuperar el prestigio cultural y científico.

  7. Revista de revistas

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    Facultad de Medicina Revista

    1942-11-01

    Full Text Available Autores, Foster-Carter, A. F. Revista, British Journal of Tuberculosis. Tomo 36, páginas 19-38. Enero, 1942. La anatomia del arból bronquial / Autores, Robinson, M. Revista, Archives of Disease in Childhood. Tomo 17, páginas 23-29. Marzo, 1942. Una nueva investigación sobre la crianza de niños al pecho /  Autores, Medawar, P. B. Revista, Lancet. Tomo 1, páginas 350-352. Fecha 21/3/42. Coagulantes químicos en el tratamiento de las quemaduras / Autores, Wyburn-Mason, R. Revista, Lancet. Tomo 2, páginas 662-3. Fecha 29/11/41. Neuritis braquial en forma epidemica

  8. Revista de revistas

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    Facultad de Medicina Revista

    1943-06-01

    Full Text Available British Medical Information Service. 3, Hanover Street. London, w. 1. Autores, Batchelor, R. C. L., Murrell, M., Thomson, G. M. Revista. British Journal of Venereal Diseases. Tomo 17, páginas 244-9. Julio y Octubre, 1941. Sulfatiazol en el tratamiento de la gonorrea / Scarff, R. ,W. and Smith, C. P. Revista : Brttish Journal. Abreviación: Brit. J. Sur. Tomo 29. Páginas 393-396. Fecha: Abril, 1942. Lesiones proliferativas y otras lesiones de mama en varón / Hemphill, R. E. Revista Jonrnal of Mental Science. Tomo 88. páginas 1-30. Enero, 1942. Catatonia hipertiroidea: un compiejo de síntomas esqulzofrenicos / Miller, E. W., Pybus, F. C. Revista: Journal of Pathology and Bacteríology, Abreviación : J. Path. Bact. Tomo 54. Páginas 155-168. Fecha: Abril-1942. El efecto de la estrona sobre ratones de tres cepas puras, con especial referencia a las glandulas mamarias / Dann, L., Glucksmann, A. Revísta : Lancet. Tomo 1. Páginas 95-98. Fecha, 24/1/42. Heridas experimentaleis tratadas con aceite de higado de bacalao y sustancias afines / Maitland, A. J. L. Revista: Journal of the Royal Naval Medical Service. Abreviación: J. roy. nav. med. Serv. Tomo 28. Páginas 3-17. Fecha: Enero, 1942. Quemaduras de guerra. Un estudio del tratamiento y resultados en un centenar de casos / Sheehan. H. L. Revista: Lancet. Tomo 1. Páginas: 616-618. Fecha: 23/5/42. Transfusión de sangre para  hemorragia obstetrica y shock / Carter, A. B. Revista, Journal of Mental Science. Tomo 88, páginas 31-81. Enero, 1942. Los factores pronosticos en las psicosis de los adolescentes

  9. Revista de revistas

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    Facultad de Medicina Revista

    1941-09-01

    Full Text Available Autores Hill, D. K. Revista Lancet. Abreviación Lancet. Tomo 1, páginas 177-178. Fecha 8-2/41. Determinación del volumen sanguíneo en pacientes con shock / Autores, Jewesbury, E. C. O. Artículo, Reactions after transfusion of stored blood. Revista, British Medical Journal. Abreviación Brit. med. J. Tomo 1, páginas 663-5. Fecha 3-5-41. Reacciones después de la transfusión de sangre conservada / Autores, Mackay, M. E. Artículo, The Bacteriostatic effect of desinfectants in human serum and citrated plasma. Revista, British Medical Journal. Abreviación, Brit. med. J. Tomo 1, páginas 737-750. Fecha 17-5-41 / Autores, Dubash, J. Clegg, O., Vaughan, J. Artículo, Changes ocuring in blood stored in different preservatives. Revista, British Medical Journal. Abreviación Brit. med. J. Tomo 2, páginas 482-4. Fecha 12-10-40 / Alteraciones producidas en sangre conservada con distintos preservativos. Autores, Czekalowski, J. W. Artículo, Studies on stored blood. Revista, Endinburgh Medical Journal. Abreviación, Edinb. med. J. Tomo 48, páginas 405-13. Fecha, Junio, 1941 / Estudios sobre sangre conservada. Autores, Harrison, G. A. Picken, L. E. Artículo, Quantitative aspects of transfusion. Revista Lancet. Tomo 1, página 685. Fecha 31-5-41 / Aspectos cuantitativos de la transfusión.

  10. Revista de revistas

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    Facultad de Medicina Revista

    1943-12-01

    Full Text Available Autores, Sandison, R. A., McGregor, J. S. Revista, Journal od Mental Science. Abreviación, J. ment. Sci. Tomo 88. páginas, 387-406. Fecha, julio, 1942. Una experiencia de un año de insulina intravenosa en el tratamiento de la esquizofrenia mediante shock higlucemico / Autores Botterell, E. H., Jefferson, G. Revista, British Medical Journal. Abreviación, Brit. med. J. Tomo 1. Paginas 781-783. Fecha, 27-6-42 / Tratamiento de las heridas de cuero cabelludo en bajas por raid aéreo y otros accidentes / Autores, Clegg, J. W., King, E. J. Revista, British Medical Journal. Abreviación, Brit. med. J. Tomo 2. Páginas 329-333. Fecha 19-9-42 / Determinación de la hemoglobina por el método de la hematina alcalina. Autores, Henry, T. C. Revista, British Medical Journal. Abreviación. Brit. med. J. Tomo 2. Páginas 273-276. Fecha, 5-9-42 / Estomatitis úlcero-membranosa. Autores, Campbell, J. A. Revista, British journal of Experimental Pathology. Abreviación, Brit. J. exp. Path. Tomo 23. Páginas 191-201, Fecha, agosto 1942 / La incidencia de tumores primarios de pulmón en una cepa mixta de ratones.

  11. Revista de revistas

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    Facultad de Medicina Revista

    1943-05-01

    Full Text Available British Medical Information Service. 3, Hanover Street. London, w. 1. Autores: Robson, J. M,., Tebrich, W. Revista: British Medical Journal. Abreviación: Brit. Med. J. Tomo 1. Páginas 687-690. Fecha, 6/6/42. Penetración y distribución de sodio-sulfacetamida en  el  tejido ocular de los conejos / Autores: Henson, R. R., Russell, D. S. Revista: Journal of Pathology and Bacteriology. Abreviación: J. Path. Bact. Tomo 54. Páginas 227-234. Fecha: Abril, 1942. Leuco-encefalitis hemorragica aguda: historia de un caso / Autores: Whitby, r, E. H. Revista: Lancet. Tomo 1. Páginas 581-584. Fecha, 16/5/42. Riesgos de la transfusión /  Autores: Wíddowsou, E. M., l\\lcCance R. A. Revista: Lancet. Tomo 1. Páginas 588-590. Fecha 1615142. El recambio del hierro en los adultos con dietas de pan blanco y moreno /  Autores: Albert, M. Rlevista: Brltísh Medlcal Journal. Abreviación: Brit; Med. J. Tomo 1. Páginas 666-668. Fecha, 30/5/42. Calcificación de los discos intervertebrales /  Autores: Findlay, G. M. Revista: Proceedings of the Royal Society of Medicine. Abreviación: Proc. royo Soco Med. Tomo 35. Páginas 157-160. Fecha, Diciembre, 1941. Investigaciones de laboratorio sobre tifus / Autores: Cheeseman, E. A. Revista: .Journal of Hygiene, Abreciación: J. Byg., Cambo Tomo 41. Páginas 463-472. Fecha, Diciembre, 1941. Comparación entre el riesgo profesional directo e indirecto en la mortalidad por tuberculosis pulmonar /  Autores: Simpson, K. Revlsta : Lancet. Tomo 1. Páginas 697-698. Fecha 13/6/42. Accidentes producidos por el aire durante la transfusión /  Autores: Young, J. Revista: .Iournal of Obstetric & Gynecology or the British Empíre. Abreviación: .J. Obstet. Gynaec. Brit. Emp. Tomo 49. Páginas 221-246. Fecha, Junio, 1942. El fenómeno eclampsico, y la isquemia placentaria /  Autores: Menzies, M. F. Revista : Lancet. Tomo 2. Páginas 35-38. Fecha: 11/7/42. Parto en el hospital o en el propio domicilio / Autores: Findlay

  12. Revista de revistas

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    Facultad de Medicina Revista

    1941-12-01

    Full Text Available Autores, Patey, D. H., Robertson, J. D. Artículo, comprenssion treatment of crush injuries of limbs. Revista, Lancet. Tomo 1. Páginas 780-782. Tratamiento por comprensión de las lesiones de los miembros a consecuencia de aplastamiento / Autores. Della Vida, B. L. Dyke, S. c. Arículo, blood-Picture in trichiniasis. Revista, Lancet. Abreviación, Tomo 2. Páginas 67-71. Fecha 19/7/41. Cuadro hemático en la triquinosis. Autores Bowesman, C. Artículo, A. Short report on the use of 4:4' - Diamidi - no stilbene in the treatment of human sleeping sickness. Revista, Annals of Tropical Medicine and Parasitology. Abreviación, Ann. Trop. Med. & Parasit. Tomo 34. páginas 217-222. Fecha 31/12/40 . Informe breve sobre el empleo del 4:4' - diamidino stilbeno en el tratamiento de la enfermedad del sueño en el hombre. Autores, Findlay, G. M. Artículo, The action of sulphanilamide on the virus of lymphogranuloma venereum. Revista, Britis Journal of Experimental Pathology. Abreviación, Brit. J. Exper. Path. Tomo 21. Páginas, 356-360. Fecha, diciembre, 1940. La acción de la sulfanilamida sobre el virus del linfogranuloma venereo. Autores, Beck, S. Peacock, P. R. Artículo Gastro-Papillomatosis due to Vitamin A deficiency induced by heated fats. Revista, British Medical Journal. Abreviación. Brit. med. J. Tomo 2. Páginas 81-83. Fecha 19/7/41 / Gastro-papilomatosis debida a deficiencia en vitamina a provocada por calentamiento de grasas. Autores, Sommerville, J. Artículo, Acute Gonorrhoea: Further Observation on treatment by sulphapiridine fowolled by Lavage. Revista, British Medical Journal. Abreviación, Brit. med. J. Tomo 1. Páginas 961-962-28-6/41. Gonorrea aguda: nuevas observaciones sobre el tratamiento con sulfapiridina seguido de lavados.

  13. Revista de revistas

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    Facultad de Medicina Revista

    1943-09-01

    Full Text Available British Medical Information Service. - 3 Hanover Street London, W 1. Autores Klaber, r. Revista British Journal of Dermatology and Syphilis. Abreviación Brit. J. Derm. Syph. Tomo 54. Páginas 193-211. Fecha julio 1942 / Fito-foto-dermatitis. Autores Taylor H. M. Revista Journal of Obstetrics & Gynaecology of the British Empire. Abreviación j. Obste. Gynaec. Brit. Emp. Tomo 49. Páginas 341-367. Fecha, Agosto, 1942 / Un estudio clínico de la mestruación con referencia especial a la dismenorrea primaria. Autores: Alcock, H. B. Revista, The Medical Press and Circular. Abreviación, Med. Press & Circular. Páginas 44-46. Fecha 15/7/42 / Anestesia en pacientes ancianos.

  14. Análisis de la autoría en la Revista Española de Documentación Científica (1997-2005

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    Jiménez Hidalgo, Sonia

    2007-09-01

    Full Text Available The Revista Española de Documentación Científica is one of the most important journals of Library and Information Science in Spain. For this reason it is interesting to analyze the most prolific authors in this journal since they can be considered as a part of the core of scientists in Spain in this area.<br />This essay shows data related to the output of these authors, nationality, national and international visibility and scientific co-authorship habits. Results show that university and CINDOC are the most important institutions involved in this journal. The Revista Española de Documentación Científica has an important geographical influence restricted to Spain and Latin American countries. The national and international author’s productivity analysis confirms that part of the authors publish in international journals and the rest publish in national journals.<br>>La Revista Española de Documentación Científica figura como una de las revistas españolas de mayor calidad en el área de Biblioteconomía y Documentación. Por tanto, no es descabellado considerar que los autores más prolíficos de la revista conforman una parte del foco de investigadores españoles del área. Es por este motivo que resulta interesante conocer ciertos aspectos de estos profesionales, no sólo para ellos mismos sino también para la revista, como es su visibilidad nacional e internacional o las tendencias de colaboración en la misma. <br />En este trabajo se proporcionan algunos datos relativos a la productividad de los autores, nacionalidad, visibilidad en las bases de datos internacionales así como sus hábitos de colaboración. Los resultados del estudio muestran un claro predominio del CINDOC y de la universidad como principales instituciones participantes en la revista. Asimismo, la Revista Española de Documentación Científica se configura como una revista con una clara influencia geográfica circunscrita

  15. In situ TEM observations of reverse dislocation motion upon unloading in tensile-deformed UFG aluminium

    International Nuclear Information System (INIS)

    Mompiou, Frédéric; Caillard, Daniel; Legros, Marc; Mughrabi, Haël

    2012-01-01

    Loading–unloading cycles have been performed on ultrafine-grained (UFG) aluminium inside a transmission electron microscope (TEM). The interaction of dislocations with grain boundaries, which is supposed to be at the origin of the inelastic behaviour of this class of materials, differs according to the main character of the dislocation segments involved in pile-ups. Pile-ups are formed by spiral sources and lead to the incorporation of dislocations into grain boundaries (GBs) during loading. Upon unloading, partial re-emission of dislocations from GBs can be observed. Stress and strain measurements performed during these in situ TEM loading–unloading experiments are in agreement with the rather large inelastic reverse strains observed during unloading in loading–unloading tests on bulk macroscopic UFG aluminium specimens.

  16. Análisis de la producción de la Universidad de Navarra en revistas de Ciencias Sociales y Humanidades empleando rankings de revistas españolas y la Web of Science

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    Torres-Salinas, Daniel

    2009-03-01

    Full Text Available This paper reports a bibliometric analysis of the output of the Faculties of Social Sciences and Humanities of the University of Navarra, as recorded by publications in scholarly journals over the period 1999-2005. Information for the analysis was gathered from Journal Citation Reports (JCR and from the Spanish Índice de Impacto de las Revistas Españolas de Ciencias Sociales (IN-RECS, Índice de Impacto de las Revistas Españolas de Ciencias Jurídicas (IN-REJS and Revistas Españolas de Ciencias Sociales y Humanidades (RESH. The aim of this work was to determine the adequacy of these ranking systems as bibliometric tools for describing the output in Spanish journals of a university. The results show the University of Navarra published 7281 documents during the studied period, 1908 (26 % of which were articles in journals. Just over 39 % of the latter were published in Spanish scientific journals, and 12 % in Web of Science journals. The coverage of the ranking systems varies per faculty: the IN-RECJ best covered articles published by the Law faculty; IN-RECS best represented production from Communication and Economics faculties; and RESH best covered production from Humanities faculties. Some 43 % of the studied articles recorded by IN-RECS were published in the first quartile of journals covered by the index; this figure was 42 % with respect to RESH, and 12 % with respect to JCR. Spanish national ranking systems are therefore useful as a complement to bibliometric information provided via the Web of Science and JCR.<br>>Se realiza un análisis bibliométrico de la producción en revistas de las facultades de Ciencias Sociales y Humanidades de la Universidad de Navarra durante el período 1999-2005. Se emplean junto al Journal Citation Reports diferentes rankings de revistas españolas: el Índice de Impacto de las Revistas Españolas de Ciencias Sociales (IN-RECS, Índice de Impacto de las Revistas Espa

  17. Revista Biblioteca Universitaria: una década de evolución

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    Reyna Espinosa, Felipe Rafael

    2009-06-01

    Full Text Available The New Series of the journal «Biblioteca Universitaria» is now 10 years old. This work provides a review of its trajectory, its contents and the topics it has covered, and discusses the editorial work that increased its circulation and quality in terms of editorial criteria and graphic and editorial design. «Biblioteca Universitaria» mainly publishes technical and professional articles related to Library and Information Science. The journal is published by the General Directorate for Libraries (DGB of the National Autonomous University of Mexico (UNAM.<br>>Al cumplir diez años la Nueva Época de la revista Biblioteca Universitaria se hace un recuento de su trayectoria, contenidos y temas tratados, así como del trabajo editorial que permitió elevar la difusión y la calidad de la revista, tanto en términos de criterios de calidad editorial, como en lo relacionado con el diseño gráfico y editorial. Biblioteca Universitaria publica principalmente artículos con contenido técnico profesional, especializada en bibliotecología y ciencia de la información, editada por la Dirección General de Bibliotecas (DGB de la Universidad Nacional Autónoma de México (UNAM.

  18. The relationship of dislocation and vacancy cluster with yield strength in magnetic annealed UFG 1050 aluminum alloy

    Energy Technology Data Exchange (ETDEWEB)

    Cao, Yiheng [Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819 (China); He, Lizi, E-mail: helizi@epm.neu.edu.cn [Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819 (China); School of Materials Science and Engineering, Northeastern University, Shenyang 110819 (China); Cao, Xingzhong; Zhang, Peng; Wang, Baoyi [Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China); Zhou, Yizhou [Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 (China); Wang, Ping; Cui, Jianzhong [Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819 (China); School of Materials Science and Engineering, Northeastern University, Shenyang 110819 (China)

    2017-01-02

    The evolutions of tensile properties and microstructures of ultrafine grained (UFG) 1050 aluminum alloy after annealing at 90–210 °C for 4 h without and with 12 T high magnetic field were investigated by tensile test, electron back scattering diffraction pattern (EBSD), transmission electron microscopy (TEM) and positron annihilation lifetime spectroscopy (PALS). When annealing temperature increases from 90 °C to 150 °C, the yield strength (YS) of UFG 1050 aluminum alloy increases, it is because that the increase in the density of vacancy clusters due to the activated monovacancies and the high angle boundaries (HABs) having more stable structures, both of them can act as effective barriers to dislocation motion during tensile deformation. When annealing at 210 °C, the YS of UFG 1050 aluminum alloy deceases, it is because that the decrease in the vacancy clusters density due to the thermally activated the vacancy clusters annihilating at sinks and the dislocation density decreases. The YS of magnetic annealed samples are lower at 90 °C and 150 °C due to the lower density of dislocations and vacancy clusters. The difference of YS between samples annealed without and with magnetic field disappears at 210 °C due to the sharply reduced strain hardening stage.

  19. Revistas Científicas: Determinación de necesidades y usos

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    Reyes Barragán, María J.

    2000-12-01

    Full Text Available The information requirements of the scientific community of the areas of science and technology in the University of Extremadura were analysed quantitatively and qualitatively through journal citations. For this purpose, a retrospective search was made in the Science Citation Index database, considering multiple variables such as use by department, impact factor, journal citations, availability, localization, accessibility, and coverage. A set of (simple and complex indicators was applied to these variables, using multiple association models (in particular, Kohonen's algorithm to determine the degree of ínterdepartmental overlap in the real use of information.<br>>Se analizan tanto cuantitativa como cualitativamente las necesidades de información de la comunidad científica de las áreas de ciencia y tecnología de la Universidad de Extremadura a través de las citas a revistas. Para ello se lleva a cabo una búsqueda retrospectiva en la base de datos del Science Citation Index. Se consideraron múltiples variables, como usos por departamentos, factor de impacto, citas a revistas, disponibilidad, localización, accesibilidad y cobertura. A estas variables le fueron aplicadas una serie de indicadores (simples y complejos, recurriendo a modelos de asociacionismo múltiple (y en concreto al algoritmo de Kohonen, para determinar el grado de solapamiento interdepartamental en el consumo real de información.

  20. Calidad, pluralismo y prestigio de las revistas españolas de biblioteconomía y documentación

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    Villagrá Rubio, Ángel

    2003-12-01

    Full Text Available In order to obtain data on the degree of scientific development and consolidation of the Library and Information Science discipline in Spain, an analysis of the Spanish scientific journals of Library and Information Science, during a period of ten years (1992-2001, is approached in this paper. Several dimensions related to their quality are considered: a Degree of fulfilment of the indicators of publishing quality more influential on the quality of contents; b level of opening or inbreeding of each journal, measured by the editorial council composition and specially by the author’s plurality, with special attention to the foreign authors; c recognition or prestige of each journal in the scientific or professional community, based upon the ‘expert assessment’. <br>The analysis shows, among other characteristics, the following: the publishing quality indicators which are more influential on the quality of contents are weakly fulfilled; inbreeding trends are noticed in the academic journals; ‘expert evaluation’, ranking the journals according to their recognition level, ascribes positions of similar rank to the academic and professional journals. All these factors would reveal a limited development of the Spanish Library and Information Science academic research and would confirm the inherent overlapping between research and development in this area of knowledge.<br>>Con objeto de obtener datos sobre el grado de desarrollo científico y consolidación de la Biblioteconomía y la Documentación en España, se aborda en este trabajo un análisis de las revistas españolas de Biblioteconomía y Documentación a lo largo de los diez últimos años (1992-2001, fijando la mirada en tres dimensiones directamente relacionadas con su calidad: 1 Grado de cumplimiento de los indicadores de calidad editorial que más influyen sobre la calidad de los contenidos; 2 Nivel de apertura o endogamia de cada una las revistas, medido a través de la

  1. Redes de citación de las revistas españolas de Ciencias Sociales 1994-2006

    Directory of Open Access Journals (Sweden)

    Torres-Salinas, Daniel

    2009-06-01

    Full Text Available The aim of this study is to make an analysis of the citation networks between the Spanish Social Science journals using the citations index IN-RECS. Different maps were generated representing the overall structure of Social Sciences and a specific analysis of Library and Information Science was conducted. The indicator betweeness was used as a measure of interdisciplinarity. The results reveal the existence of two main clusters, one formed by the Psychology and the Education and other with a prominent location of the Economics and the Political Science; Sociology is the main connexion between the two clusters. The journals with the highest rate of betweeness were Revista de Educación and Papeles de Economía. The Library and Information Science appears in a marginal side of the different maps. Revista Española de Documentación Científica is the most relevant journal with the largest betweeness rate due to its significant relationships with international journals. The results show that IN-RECS is a useful tool for the structural study of the Spanish Social Sciences.<br>>El objetivo de este estudio es realizar un análisis de las redes de citación entre revistas españolas de ciencias sociales empleando el índice de citas IN-RECS. Se han generado diferentes mapas representando la estructura general de las ciencias sociales y se llevó a cabo un análisis específico del área de Biblioteconomía y Documentación (ByD. Asimismo se empleó el indicador de Intermediación como medida de interdisciplinariedad. Los resultados revelan la existencia de dos clusters. Uno dominado por la Psicología y la Educación y otro donde dominan, principalmente, la Economía y la Ciencia Política, entre ambos clusters actúa de interfaz la Sociología. Las revistas con mayor índice de intermediación son la Revista de Educación y Papeles de Economía. La ByD aparece en un lugar marginal de los grafos, dentro de esta especialidad

  2. Los criterios de calidad editorial LATINDEX en el marco de la evaluación de las revistas españolas de ciencia y tecnología

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    Urdín Caminos, Carmen

    2003-03-01

    Full Text Available After a short description of the regional information system LATINDEX, results of the application of editorial quality criteria to the Spanish journals on Science and Thecnology are given. These journals are analyzed, both globally and distributed in subjects, according to the required parameters for its inclusion in the LATINDEX Catalogue. Data about these journals international diffusion in databases and Internet are presented.<br>>Después de una breve presentación del Sistema Regional de Información LATINDEX se aportan los resultados de la aplicación de los criterios de calidad editorial LATINDEX a las revistas españolas de Ciencia y Tecnología. Se analiza el comportamiento de estas revistas, de forma global y por disciplinas temáticas, en relación con el cumplimiento de los parámetros exigidos para su inclusión en el Catálogo LATINDEX. También se presentan los datos sobre la difusión de dichas revistas en bases de datos internacionales y sobre su presencia en Internet.

  3. Revista Filosófica

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    J. Cruz Costa

    1952-03-01

    Full Text Available REVISTA FILOSÓFICA (publicação quadrimestral de estudos filosóficos e  histórico-dentíficos, dirigida por Joaquim de Carvalho. Atlântida Editõra .  Coimbra. (Primeiro Parágrafo do Artigo Muito nos apras noticiar, nas páginas da nossa revista, o aparecimento, em março de 1951, da nova Revista Filosófica, dirigida pelo ilustre e conhecido Professor Joaquim de Carvalho, da Universidade de Coimbra, que tantos e tão interessantes trabalhos tem produzido acerca da cultura em Portugal.

  4. Análisis del consumo de información de una revista electrónica: análisis de ficheros log de Cybermetrics

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    Ortega Priego, José Luis

    2004-12-01

    Full Text Available The aim of this paper is to study the information consumption made in the electronic journal Cybermetrics for 2001-2003. As methodology, the web log files transactions made to this journal were analysed. The results provide information about access source, more visited sections and other usability aspects. Next, the paper discusses the utility and use of this information source and particularly the methodological problems raised in this study. Finally, it concludes with the international position of the journal and its visibility in the Bibliometrics and Scientometrics field.<br>>El propósito de este trabajo es estudiar el consumo de información que durante el periodo 2001-2003 se realiza de la revista electrónica Cybermetrics. Como metodología se han analizado las transacciones realizadas a dicha revista recogidas en los ficheros web log. Los resultados proporcionan información sobre el origen de los accesos, secciones más visitadas y otros aspectos de su usabilidad. Seguidamente, se discute la problemática existente en la utilidad y uso de esta fuente y particularmente los problemas derivados de esta metodología en este trabajo. Por último, se concluye con la internacionalización de la revista y su posición en el mundo de la Bibliometría y Cienciometría.

  5. Aixa, la revista del Museu Etnològic del Montseny «La Cabella»

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    Rueda Torres, Josep Manuel

    2002-06-01

    Full Text Available The author thoroughly reviews the nine issues that have appeared thus far of the journal Aixa, published by the Anthropological Museum of Montseny. The journal records the research initiatives regarding Montseny's local culture and provides a forum for numerous seminars about museums, mountain areas, tourism and cultural heritage, landscape and nature.<br>>El autor hace un repaso exhaustivo de los nueve números que lleva publicados la revista Aixa, órgano del museo etnológico del Montseny, que recoge las iniciativas de investigación en el ámbito de la cultura local y sirve de foro a numerosos seminarios de estudio sobre museos, áreas de montaña, turismo y patrimonio, paisaje y naturaleza.

  6. Revista Panida

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    Gilberto Loaiza Cano

    2004-09-01

    Full Text Available Panida fue la revista quincenal de arte y literatura que nació en Medellín el 15 de febrero de 1915 y aglutinó, por primera vez, a una nueva generación de intelectuales que, con algunas poses propias de las vanguardias artísticas, animó el ambiente patriarcal de la capital antioqueña. En esa revista se reunieron quienes, posteriormente, construyeron sus peculiares, y en algunos casos truncos, caminos creativos: Ricardo Rendón, León de Greiff, Teodomiro Isaza, Libardo Parra, Rafael Jaramillo, Jesús Restrepo Olarte, Eduardo Vasco, Jorge Villa, Félix Mejía, Bernardo Martínez, Fernando González, José Manuel Mora y José Gaviria. La revista reunió poetas, pintores, músicos, filósofos, que constituyeron el núcleo germinal de la generación de Los Nuevos. En sus diez números -murió el 20 de junio de 1915- logró expresar la intención de revaluar la tradición artística decimonónica y dio las puntadas iniciales de lo que sería el tímido contacto de nuestros intelectuales de comienzos de siglo con el vigoroso movimiento vanguardista.

  7. TcruziDB, an Integrated Database, and the WWW Information Server for the Trypanosoma cruzi Genome Project

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    Degrave Wim

    1997-01-01

    Full Text Available Data analysis, presentation and distribution is of utmost importance to a genome project. A public domain software, ACeDB, has been chosen as the common basis for parasite genome databases, and a first release of TcruziDB, the Trypanosoma cruzi genome database, is available by ftp from ftp://iris.dbbm.fiocruz.br/pub/genomedb/TcruziDB as well as versions of the software for different operating systems (ftp://iris.dbbm.fiocruz.br/pub/unixsoft/. Moreover, data originated from the project are available from the WWW server at http://www.dbbm.fiocruz.br. It contains biological and parasitological data on CL Brener, its karyotype, all available T. cruzi sequences from Genbank, data on the EST-sequencing project and on available libraries, a T. cruzi codon table and a listing of activities and participating groups in the genome project, as well as meeting reports. T. cruzi discussion lists (tcruzi-l@iris.dbbm.fiocruz.br and tcgenics@iris.dbbm.fiocruz.br are being maintained for communication and to promote collaboration in the genome project

  8. The Revista Scientific

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    Oscar Antonio Martínez Molina

    2017-02-01

    Full Text Available The Revista Scientific aims to publish quality papers that include the perspective of analysis in educational settings. Together with www.indtec.com.ve, this electronic publication aims to promote and disseminate, with seriousness and rigor, the academic production in this field. Editorial of the new stage Revista Scientific was created with the aim of constituting a reference space for scientific research in the field of research analysis that is carried out within the universities in Latin America, once the distribution list hosted on the INDTEC platform (http://www.indtec.com.ve is consolidated as a space for dissemination and development of new ideas and initiatives. The first presentation of INDTEC Magazine was held in August 2016 in Venezuela. Thanks to the support of the INDTEC platform, SCIENTIFIC Magazine has been able to develop from the cooperative work of the people who make up its Editorial Committee, Academic Committee and Scientific Committee in Electronic Edition, and of the referees of each one of the numbers. Part of the success is due to the motivation of its co-editors and excellent professionals from different parts of the world: Argentina, Belgium, Colombia, Cuba, Ecuador, Spain, Mexico, Venezuela, which form the various committees, with enthusiasm and joy participating in this project (whose organizational structure is presented in this edition and continues in increcendo. Also, the strategy adopted to edit a monographic number from the various events organized in the framework of the universities, has contributed to provide SCIENTIFIC with a point value speaker of intellectual progress in the field of education. SCIENTIFIC Magazine is currently indexed in ISI, International Scientific Indexing, Dubai - UAE; ROAD, the Directory of Open Access Scholarly Resources (ISSN International Center, France; REVENCYT-ULA, Venezuela; Google Scholar (Google Scholar, International Index; Published in Calaméo; ISSUU; Academia

  9. Creep study of mechanisms involved in low-temperature superplasticity of UFG Ti-6Al-4V processed by SPD

    Energy Technology Data Exchange (ETDEWEB)

    Kral, Petr, E-mail: pkral@ipm.cz [Institute of Physics of Materials, ASCR, Zizkova 22, CZ -61662 Brno (Czech Republic); CEITEC – IPM ASCR, v.v.i., Zizkova 22, CZ-61662 Brno (Czech Republic); Dvorak, Jiri [Institute of Physics of Materials, ASCR, Zizkova 22, CZ -61662 Brno (Czech Republic); CEITEC – IPM ASCR, v.v.i., Zizkova 22, CZ-61662 Brno (Czech Republic); Blum, Wolfgang [Inst. f. Werkstoffwissenschaften, University of Erlangen-Nürnberg, D-91058 Erlangen (Germany); Kudryavtsev, Egor; Zherebtsov, Sergey; Salishchev, Gennady [Belgorod State University, Laboratory of Bulk Nanostructured Materials, Pobeda Str. 85, 308015 Belgorod (Russian Federation); Kvapilova, Marie; Sklenicka, Vaclav [Institute of Physics of Materials, ASCR, Zizkova 22, CZ -61662 Brno (Czech Republic); CEITEC – IPM ASCR, v.v.i., Zizkova 22, CZ-61662 Brno (Czech Republic)

    2016-06-15

    The deformation kinetics of ultrafine-grained Ti-6Al-4V with mean (sub)grain size about 150 nm (produced by isothermal multiaxial forging) and superplastic properties at the relatively low temperature of 873 K was investigated in compression and tension over a large range of strain rates from 10{sup −7} to 10{sup −2} s{sup −1}. Electron microscopic observations showed that the grains coarsen during deformation towards the quasi-stationary spacing w{sub qs} of strain induced boundaries. In spite of the grain coarsening the grains were generally smaller than w{sub qs} allowing high-angle boundaries to dominate the quasi-stationary strength. Texture measurements indicate that dislocation glide plays a large role in deformation. Glide in this alloy is significantly influenced by solid solution strengthening leading to a stress sensitivity of strain rate of n = 3. The present ultrafine-grained Ti alloy displays a stress sensitivity exponent n = 2 over an extended stress range where its superplastic behavior is optimal. While the deformation kinetics of present ultrafine-grained Ti alloy can be roughly explained by the traditional formula for superplastic flow, the significant discrepancy to the measured values suggests that solid solution strengthening must be taken into account to get a complete insight. - Highlights: • The UFG Ti-6Al-4V alloy behaves superplastically at low temperature of 873 K. • Grain coarsening at low stresses limits superplasticity of UFG Ti alloy. • Solute strengthening plays an important role in low-temperature superplasticity. • Acceleration of creep in UFG Ti alloy is caused by processes related to hab.

  10. CONTRASTANDO AS PRODUÇÕES DA REVISTA CONTABILIDADE & FINANÇAS (FEA-USP E REVISTA BASE (UNISINOS

    Directory of Open Access Journals (Sweden)

    FLÁVIO DONIZETE BATISTELLA

    2008-01-01

    Full Text Available La reestructuración del sistema de evaluación de publicaciones de la Funda-ción Coordinación de Perfeccionamiento de Personal de Nivel Superior (CAPES, el Sistema Qualis, produjo un fuerte incentivo a la publicación de artículos en periódicos. Aprehender la fase de la producción en dos periódicos nacionales es el foco de esta averiguación. Estos periódicos son: Revista Contabilidade & Finanças (FEA-USP e Revista Base (UNISINOS. El período de análisis engloba las publicaciones ocurridas en 2005 y en 2006. Los aspectos observados por la CAPES en su proceso de eva-luación de periódicos son eminentemente orientados en la edición y compaginación del periódico. En este sentido, el análisis adoptado en esta pesquisa posee enfoque en la forma de los periódicos, siendo que la metodología central es fundamentada en el modelo propuesto por Krzyzanowski y Ferreira (1998. Los resultados logrados sugieren que la Revista Contabilidad & Finanzas (FEA-USP presenta, con relación al apartado forma, un desempeño general clasificado como bueno, mientras que la Revista Base (Unisinos presenta un desempeño mediano. Se observó también una mayor concentración de autores en las publicaciones de la Revista Contabilidad & Finanzas (FEA-Usp (recurrencia con relación a la Revista Base (UNISINOS.

  11. Revistas científicas de las universidades españolas: acciones básicas para aumentar su difusión e impacto

    Directory of Open Access Journals (Sweden)

    Abadal, Ernest

    2008-06-01

    Full Text Available A description of the current situation of scholarly journals from Spanish universities with the aim of highlighting certain actions to improve their dissemination. First, quantitative data is offered regarding the university scientific journals that originate from journal directories (essentially, Cindoc, Ulrich’s and Latindex. It then sets out a set of seven basic lines of action to improve their dissemination and impact: content digitalisation, inclusion on portals, free access dissemination, creation of multilingual versions, communication of new features, audience measuring and inclusion in databases. Finally, reference is made to the main agents that may carry out this type of action<br>>Se describe la situación actual de las revistas científicas de las universidades españolas con el propósito de señalar algunas acciones para mejorar su difusión. En primer lugar, se ofrecen diversos datos cuantitativos sobre las revistas científicas universitarias que proceden de directorios de revistas (CINDOC, Ulrich’s y Latindex, fundamentalmente. A continuación, se señalan un conjunto de siete líneas básicas de actuación para mejorar su difusión e impacto: digitalización de contenidos, inclusión en portales, difusión en libre acceso, elaboración de versiones multilingües, comunicación de novedades, medición de la audiencia, e inclusión en bases de datos. Finalmente, se hace referencia a los principales agentes que pueden llevar a cabo este tipo de actuaciones.

  12. La revista Arxiu d´Etnografia de Catalunya: una retrospectiva

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    Bodoque Puerta, Yolanda

    2002-06-01

    Full Text Available Arxiu d'Etnografia de Catalunya is one of the most influential journals in Spain in the field of social and cultural anthropology. Published by researchers working in the Division of Social Anthropology of the University Rovira i Virgili of Tarragona, AEC boasts a repertoire of monographic issues, fieldwork guides and bibliographies which are mandatory reading for both the national scientific community and foreign scholars interested in Spain.<br>>El Arxiu d'Etnografia de Catalunya es una de las revistas especializadas en antropología socio-cultural más influyentes en España desde su nacimiento. Publicada por los investigadores del Área de Antropología social de la Universidad Rovira i Virgili (Tarragona, sus dossiers monográficos, las guías de trabajo y las recopilaciones bibliográficas que ha publicado son de obligada referencia para la comunidad científica nacional y los investigadores foráneos interesados en España.

  13. Análisis de las referencias bibliográficas incluidas en los artículos de Zoología publicados en revistas españolas

    Directory of Open Access Journals (Sweden)

    Ronda Laín, C.

    2005-09-01

    Full Text Available The aim of this study is to identify the publications with the greatest influence on the Spanish researchers on Zoology, through the analysis of references cited in their articles in Spanish journals, considering document type, year of publication, geographic origin and subject. The references to journals and monographs are studied in more detail obtaining a ranking of the most cited ones. The results show that journals are the most cited documents (over 70% followed by books (23%. Both Spanish journals and books are amongst the most cited.<br>>Con objeto de identificar las publicaciones que influyen en la producción científica de los investigadores españoles del campo de la Biología Animal, se han estudiado las referencias incluidas en los artículos de zoología publicados en revistas españolas, determinando su tipología documental, la antigüedad de las citas, su origen geográfico y la materia general de las mismas, y se han obtenido clasificaciones por número de citas de las revistas y los libros citados. Los resultados muestran que las publicaciones periódicas constituyen más del 70% de los documentos citados, seguidas de los libros que superan el 23%. En las clasificaciones de revistas y monografías por número de citas, las publicadas en España ocupan el primer lugar.

  14. A abordagem ambiental na geografia agrária brasileira: uma análise dos periódicos Revista Agrária, Revista Campo-Território e Revista NERA

    OpenAIRE

    Artur Leonardo Andrade

    2015-01-01

    O presente estudo procurou analisar a abordagem ambiental na geografia agrária brasileira a partir dos periódicos Revista Agrária, Revista Campo-Território e Revista NERA. Para isso, foram selecionados e analisados 78 artigos que debatem, de forma direta, a questão ambiental. Como os periódicos foram criados a partir da década de 1990, a escolha metodológica possibilitou uma análise do período atual da geografia agrária, o pós-1990, marcado pela pluralidade teórico-metodológica. Esta pesquisa...

  15. De mochila nas costas, reconstruindo as trilhas da revista Realidade e em busca de novas narrativas. Revista Campus Repórter-UnB

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    Dione Oliveira Moura

    2009-12-01

    Full Text Available O artigo descreve a experiência de uma revista laboratório da Faculdade de Comunicação da Universidade de Brasília, revista Campus Repórter, lançada no ano de 2007, mas, vai além e problematiza, a partir de experiências concretas, o espaço de ensino-aprendizagem em produção de reportagens como um espaço para construção de (novas formas narrativas para o jornalismo impresso, especialmente o jornalismo de revista. Também descreve o modo de produção colaborativa da revista, a qual envolve estudantes de jornalismo, publicidade e desenho industrial, com supervisão de professores editores da área de reportagem, fotojornalismo e planejamento gráfico.Conclui que a experiência colaborativa na produção de uma revista laboratório soma resultados e que a revista tem trilhado um caminho que aponta para novas formas narrativas mais atentas à polissemia, assim como a perspectivas inovadores de narrar fatos cotidianos a partir de uma perspectiva mais contextual, com inspiração na revista Realidade (1966 a 1976.

  16. ¿Qué es una revista científica?

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    Rafael Capurro

    2015-11-01

    Full Text Available El artículo busca responder la pregunta ¿qué es una revista científica? Para ello, comienza analizando algunos momentos históricos en su desarrollo. Por ejemplo, el surgimiento de las revistas Le Journal des sçavans, primera revista considerada científica, Nouvelles de la république des lettres, la primera revista con periodicidad mensual y Philosophical Transactions of the Royal Society of London, revista orientada hacia las ciencias experimentales. En la segunda parte, se expone la crisis informacional ocurrida al fin de la Modernidad, que tiene como uno de sus resultados la pregunta antes planteada. En la tercera parte, se intentará responder ¿qué es una revista científica en la era digital? Se puede considerar la creación de Internet y, en forma más general, el impacto de la tecnología digital en todos los ámbitos de la vida como índice de una nueva era. Si la imprenta y con ella el libro y la revista son hijos de la Modernidad, Internet y la circulación global de datos digitales son hijos de lo que podemos llamar era digital.  El artículo culmina con un estudio sobre el título de la revista Informatio, identificando su etimología, estableciendo su conexión con el término información y mencionando el ámbito de investigación abierto de la revista del Instituto de Información de la Facultad de Información y Comunicación de la Universidad de la República.

  17. Revista de revistas

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    Facultad de Medicina Revista

    1948-03-01

    Full Text Available Revista The Lancet 1947, I: 659-698 . Londres, mayo 17 de 1947 / Artículos originales: Bioquímica de la inflamación.- Valy Menkin - Temple University, Filadelfia, Pp. 660-662 / Tratamiento de la tirotoxicosis C01l propiltiouracilo. A. Wilson, J. Goodwin. University of Sheffield. Pp. 669-671 / Neoantergán en el tratamiento de la urticaria.-R. B. Hunter, Univ. Edimburgo. pp. 672-674 / The Lancet 1947: I: 699-734. Londres, mayo 24 de 1947 / Aspectos históricos de la investigación endocrina- (Addison Lecture dictada el 2 de diciembre de 1946 en el Guy's Hospital, Londres. E. C. Dodds. Pp, 702 / Liberación de una enzyma proteolítica en los shocks anafiláctico y por peptona in vitro.-G. Ungar-University College Hosp. Med. School, Londres.- Pp. 708-710.

  18. El destino de las revistas científicas nacionales. El caso español a través de un muestra (1950-90

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    Jiménez Contreras, Evaristo

    2001-06-01

    Full Text Available The aim of the present work was to analyse the evolution of Spanish scientific journals in the fields of experimental sciences and medicine from the viewpoint of what might be called their appeal to the national and international research community, to determine to what degree these journals are or are ceasing to be a valued or attractive channel of communication for the said researchers. To this end, we studied the changes that a sample of Spanish scientific journals have undergone over the last 40 years. The journals were: Anales de Física, Anales de Química, Estudios Geológicos, Medicina Clínica, Revista Española de Fisiología and Revista Íberoamericana de Matemáticas. They cover all the traditional academic fields except Biology, and were considered to be the most representative of their respective specialities. The aspects analysed were: productive capacity, affiliation, and the authors’ national origins. We considered these to be particularly sensitive to the image and appeal of the journals for their respective communities: changes in these aspects would reflect the role and importance that researchers attribute to the journal. Three tri-annual sequences were studied from the decades of the 50’s, 70’s, and 90’s. The results show: a process of rise and fall of the productive capacity; a successive leadership, in terms of number of articles, with affiliations first in the CSIC (the Government Research Council and later in the Universities; and lastly a growing presence of foreign authors, especially from Europe and Latin America which partially compensates the reduction in Spanish authors. Some possible causes of these changes are indicated. The issue of the survival of these journals is discussed in the Conclusions.<br>>El objetivo de este trabajo es analizar la evolución de las revistas científicas españolas en el ámbito de las ciencias experimentales y médicas en el último medio siglo, desde el punto de vista de

  19. Acerca de la Revista

    Directory of Open Access Journals (Sweden)

    Comite Editorial

    2011-02-01

    Full Text Available En esta seccion se espeficica la mision, objetivos, politicas de la revista asi como las normas de publicacion para los autores.  Lea atentamente esta seccion para resolver dudas que tenga

  20. A reestruturação da educação superior no Brasil e o processo de metamorfose das universidades federais: o caso da Universidade Federal de Goiás (UFG).

    OpenAIRE

    João Ferreira de Oliveira

    2000-01-01

    Esta pesquisa objetiva desvelar o atual estado de mudança que configura o processo de metamorfose das universidades federais, ou melhor, as modificações que estão se processando e as novas feições assumidas, tomando como referência básica o caso da Universidade Federal de Goiás (UFG). Examina como se equaciona a questão da natureza, da identidade e do papel da UFG no quadro das atuais políticas de educação superior e das tensões e desafios contemporâneos. A investigação teve como ponto de par...

  1. La crisis europea en Revista de Occidente (1923-1936

    Directory of Open Access Journals (Sweden)

    Juan Pablo Camazón Linacero

    2000-01-01

    Full Text Available En este artículo, el autor analiza la crisis europea y la depresión económica en el periodo de entreguerras, prestando atención principalmente a las repercusiones de estos hechos en la obra de José Ortega y Gasset y en Revista de Occidente. La crisis de conciencia y la idea de Europa, el papel de las élites y el acceso de las masas al poder social son las cuestiones fundamentales tratadas por los escritores de Revista de Occidente. También explica las soluciones económicas que propuso la revista.In this article, the author analyses the European crisis and the economic Depression in the inter-war period, paying attention principalty to the repercussions of these events in the work of José Ortega y Gasset and in Revista de Occidente. The chsisconsciounsness and the idea of Europa, the role of the élites and the accession of the masses to the social power are the fundamental questions treated by the whters of Revista de Occidente. Also, he explains the economic solutlons that the review proposes.

  2. [Biomedical research in Revista de Biologia Tropical].

    Science.gov (United States)

    Gutiérrez, José María

    2002-01-01

    The contributions published in Revista de Biología Tropical in the area of Biomedical Sciences are reviewed in terms of number of contributions and scope of research subjects. Biomedical Sciences, particularly Parasitology and Microbiology, constituted the predominant subject in the Revista during the first decade, reflecting the intense research environment at the School of Microbiology of the University of Costa Rica and at Hospital San Juan de Dios. The relative weight of Biomedicine in the following decades diminished, due to the outstanding increment in publications in Biological Sciences; however, the absolute number of contributions in Biomedical Sciences remained constant throughout the last decades, with around 80 contributions per decade. In spite of the predominance of Parasitology as the main biomedical subject, the last decades have witnessed the emergence of new areas of interest in the Revista, such as Pharmacology of natural products, Toxinology, especially related to snake venoms, and Human Genetics. This retrospective analysis evidences that Biomedical Sciences, particularly those related to Tropical Medicine, were a fundamental component during the first years of Revista de Biología Tropical, and have maintained a significant presence in the scientific output of this journal, the most relevant scientific publication in biological sciences in Central America.

  3. Revista Barroco: o lugar de uma arte

    Directory of Open Access Journals (Sweden)

    Evandro de Sousa

    2008-12-01

    Full Text Available A revista Barroco, fundada em 1969 pelo poeta e ensaísta mineiro Affonso Ávila, nasce com a intenção de cumprir o valor de uma “ciência” que abarcasse o fenômeno/arte Barroca: a barrocologia 2. Ao propor isto na apresentação da primeira edição da revista, Ávila ainda enuncia que a revista não se quer meramente documental e erudita, mas quer se situar em uma “atualidade crítica” 3, não cerceando a matéria barroca a um período exclusivo, mas impor uma leitura em um outro contexto: o mineiro. Impõe assim um olhar do barroco enquanto fenômeno universal, para assim compreendê-lo em seu contexto brasileiro, em suas matrizes e desdobramentos.

  4. Assessing the quality of a scientific journal: the case of Revista Brasileira de Psiquiatria Avaliando a qualidade de uma revista científica: o caso da Revista Brasileira de Psiquiatria

    Directory of Open Access Journals (Sweden)

    Christian Kieling

    2007-06-01

    Full Text Available Scientific production in the field of Psychiatry is growing exponentially, as reflected by the number of scientific journals now available. Current strategies to objectively estimate the quality of a specific publication are mostly based on indexation and citation criteria. The concept of impact factor, a measure of the frequency with which an article has been cited in a particular period, is key to understanding the way journals are evaluated. The recent indexation of Revista Brasileira de Psiquiatria in the two major medical databases has increased the journal's visibility, as indicated by the rising number of citations received over the last years. As researchers' scientific productivity measures are largely associated with citation indices of journals in which manuscripts are published, it is essential that Revista Brasileira de Psiquiatria continues to attract high quality, innovative articles, with the ultimate goal of providing state-of-the-art continuing medical education for mental health professionals.A produção científica no campo da Psiquiatria vem crescendo de modo exponencial, como demonstrado pelo atual número de revistas científicas na área. As estratégias usadas para avaliar objetivamente a qualidade de uma determinada publicação estão hoje baseadas fundamentalmente em critérios de indexação e citação. O conceito de fator de impacto, que é uma estimativa da freqüência com que um determinado artigo foi citado em um dado período, é fundamental para compreender o modo como os periódicos científicos são avaliados. A recente indexação da Revista Brasileira de Psiquiatria nos dois principais bancos de dados da literatura médica proporcionou à revista uma maior visibilidade, como sugerido pelo número crescente de citações recebidas ao longo dos últimos anos. Um correto entendimento do conceito de fator de impacto (uma estimativa da freqüência com que um determinado artigo foi citado em um dado per

  5. Los valores noticia en las revistas femeninas

    Directory of Open Access Journals (Sweden)

    Alfredo José Dillon

    2011-10-01

    Full Text Available El objetivo de este trabajo es analizar la construcción de la agenda de temas en las revistas femeninas, tomando como punto de partida la teoría de los valores noticia, que se enmarca dentro de los estudios de newsmaking. El objetivo será corroborar si existen “valores noticia femeninos”, a partir de la comparación de los frames y los modelos de mujer que predominan en dos revistas argentinas de la década de 1990: Para Ti y Mujeres & Compañía. Proponemos repensar los “criterios de noticiabilidad” en el periodismo femenino a partir de los principales temas que se encuentran en las páginas de estas revistas, en las que el universo femenino suele aparecer atravesado por la maternidad, la pareja, el sexo, el trabajo, la moda, la belleza y las tareas domésticas, entre otros.

  6. Narrativas do tempo presente no jornalismo de revista: um olhar sobre a cobertura da América Latina em 45 anos da Revista Veja

    Directory of Open Access Journals (Sweden)

    Valquiria Michela John

    2016-05-01

    Resumem:Veja es la mayor revista de circulación en Brasil y una de las cuatro de mayor circulación en el mundo, por lo tanto, desempeña un papel importante en la construcción de representaciones sobre los temas que aborda. En septiembre de 2013, la revista ha completado 45 años, un gran acontecimiento para el periodismo brasileño. Durante estos más de cuatro décadas, Veja ayudó a construir no sólo el Brasil, sino también los recuerdos de otras naciones, otras culturas.  Entre estos diversos "otros" son los países latinoamericanos que en varias ocasiones han aparecido en la revista durante ese período. Al abordar las cuestiones relacionadas con los países del América Latina, la revista ayuda a fortalecer ciertos recuerdos, representaciones de estos países. La investigación tuvo como objetivo analizar la construcción de representaciones de América Latina llevada a cabo por la revista durante sus 45 años de historia. Como procedimiento metodológico, se utilizó el análisis de contenido.

  7. Revista de revistas

    Directory of Open Access Journals (Sweden)

    Facultad de Medicina Revista

    1941-05-01

    Full Text Available Consulado de Colombia en Boston. Para el Departamento Consular. - Informe mensual. - Mes de diciembre de 1940. Asunto: dos nuevos aparatos científicos (1 El microscopio "Electrón". (2 El Klystron / Eduardo Gómez Durán, Consúl de Colombia. La esquistosomiasis en los valles irrigados de Venezuela (Revista de Sanidad y Asistencia Social. Volumen VI. Abril, 1941. N° 2 Caracas Venezuela. Tripanosomiasis humana (Enfermedad de Carlos Chagas en Guayaquil, Ecuador. La fenothiazina como antihelmintico en infecciones por oxiuros y ascaris / Manson - Bahr, P. - The Lancet. 28-12-40. Sangre conservada: un análisis de su empleo. Informe del Merseyside war blood bank (Depósito de sangre de Guerra / Edwards, F. R. - Davie, T. B. - Brit. Med. J. 20-7-40.  Efecto de los rayos X sobre las enzimas / Dale, W. M. - Biochemical Journal. Nov. 1940. Estudio experimental de lesiones producidas por onda explosiva en los pulmones (Resumen aparecido en el Bulletin of War Medicine, 1, 76, Nov. 1940 / Zuckerman, S. - The Lancet. 24-8-40

  8. Revista de revistas

    Directory of Open Access Journals (Sweden)

    Facultad de Medicina Revista

    1941-07-01

    Full Text Available Copiamos de la interesante revista "Tijeretazos sobre Malaria", edltada por la División de Malariología del Ministerio de Sanidad Pública de Venezuela, explicaciones sobre algunas palabras usadas impropiamente en los escritos de los médicos e inspectores de sanidad. Por hoy anotamos los términos infestar, infectar, infestación e infección y la traducción de la palabra inglesa survey. Embolismo pulmonar: Diagnóstico por electrocardiografía con derivación torácica. Lesión del sistema nervioso central por onda explosiva. Métodos modernos de tratamiento de la tuberculosis pulmonar. EI sulfatiazol en el tratamiento de las infecciones estafilocócicas. Anticuerpos inmunizantes contra la fiebre amarilla en sucros de carnero. Experimentos de crecimiento "in vitro" del virus de la fiebre amarilla. Efecto de la terapéutica con Vitamina A, calculada mediante una rápida prueba óptica. Determinación del nivel de nutrición: Prueba de Vitamina C en grupos de niños en edad escolar bien y mal nutridos.

  9. Revista Barroco: o lugar de uma arte

    Directory of Open Access Journals (Sweden)

    Evandro de Sousa

    2008-01-01

    Full Text Available http://dx.doi.org/10.5007/1984-784x.2008v8n12p184 A revista Barroco, fundada em 1969 pelo poeta e ensaísta mineiro Affonso Ávila, nasce com a intenção de cumprir o valor de uma “ciência” que abarcasse o fenômeno/arte Barroca: a barrocologia 2. Ao propor isto na apresentação da primeira edição da revista, Ávila ainda enuncia que a revista não se quer meramente documental e erudita, mas quer se situar em uma “atualidade crítica” 3, não cerceando a matéria barroca a um período exclusivo, mas impor uma leitura em um outro contexto: o mineiro. Impõe assim um olhar do barroco enquanto fenômeno universal, para assim compreendê-lo em seu contexto brasileiro, em suas matrizes e desdobramentos.

  10. Autorías, colaboración y patrones de citación de las revistas biomédicas editadas en España incluidas en el Journal Citation Reports (2003-2007

    Directory of Open Access Journals (Sweden)

    González-Alcaide, Gregorio

    2010-09-01

    Full Text Available A bibliometric analysis of Spanish biomedical journals indexed in the Journal Citation Reports database between 2003 and 2007 was carried out. 12.335 papers were analysed, 86.4 % published in eleven Spanish language journals and 13.59 % published in five English language journals. The great majority of Spanish language journals are official publications of Spanish medical societies which represent for their members an important channel for scholarly communication. The Spanish language journals revealed a notable number of Spanish research groups (n = 525, 85.8 % of published papers came from health care institutions, and the prevalent type of collaboration was domestic and regional. Furthermore, the study reveals that higher levels of citation are associated with papers published by the aforementioned research groups, those having a greater degree of collaboration, and those that had at least one woman participating. On the other hand, English language journals are focused on basic research and only publish articles or reviews. Their productivity rate is lower, but they have a higher level of international participation and outstanding citation rates. 87.62 % of papers from these journals were published by researchers from academic institutions. Collaboration on the international level ranges between 16 % and 22 % of the total.<br>>Se realiza un análisis bibliométrico de las revistas biomédicas editadas en España recogidas en el Journal Citation Reports entre 2003 y 2007. Se han analizado 12.335 trabajos, un 86,4 % publicados en once revistas editadas en español y un 13,59 % en cinco revistas editadas en inglés. La gran mayoría de revistas editadas en español son publicaciones oficiales de sociedades médicas, constituyendo un importante canal de comunicación científica para sus miembros. Estas revistas aglutinan un importante número de grupos de investigación (n = 525, el 85,8 % de los trabajos de las mismas han sido

  11. UM NÓ NA TRAMA DISCURSIVA: A CONSTITUIÇÃO DA ANÁLISE DO DISCURSO NA FACULDADE DE LETRAS/UFG

    Directory of Open Access Journals (Sweden)

    KÁTIA MENEZES DE SOUSA

    2006-01-01

    Full Text Available Este texto se apresenta como uma tentativa de registrar a forma  omo está se desenvolvendo os trabalhos em Análise do Discurso na Faculdade de Letras da Universidade Federal de Goiás. Para isso, resumidamente, situamos a Análise do Discurso, em seu percurso teórico e histórico, desde o surgimento na França, passando por sua entrada no Brasil e alcançando o cenário de sua realização hoje na UFG.

  12. Revista ORL at Open Science Ecosystem

    Directory of Open Access Journals (Sweden)

    Tránsito FERRERAS FERNÁNDEZ

    2018-05-01

    Full Text Available In October 2017 they were held at the University of Salamanca the congress Open Knowledge Ecosystems (ACE 2017 posed as an international meeting point for specialists in open access. The congress allowed to approach the open knowledge from the perspectives I + D + i, offering papers and communications on research related to Open Access, as well as experiences developed in repositories and institutions and approaches to innovative trends in any of the fields of open knowledge.The experience of Revista ORL was present in ECA 2017 through a joint communication of several authors titled Nuevas vías de publicación para revistas biomédicas. Proyecto Revista ORL de Ediciones Universidad de Salamanca, offering an overview of the history of the Revista as an open edition project. Although on that occasion it was called a project, now we should call it "reality" fully consolidated because the data on results obtained.Open Science represents a paradigm change in the way to make science. Although this doesn't change substantially with respect to its motivations and objectives, it changes its methods. The change lies in how it is done, not in what is done. It is an open science, collaborative and made with and for society.The concept of Open Science has been preceded by Open Access to academic content and this may have conditioned its understanding. Open Access has been assimilated only with open access to articles, while with Open Science it is considered that what must be open is any research result (articles + data as well as the auxiliary instruments used (for example, laboratory notebooks. However, the double meaning of "open" (free and free is the same for the two concepts.In this paper we pose questions such as What is Open Science? What are the motivations of governments for its promotion? What components does make up this ecosystem? What are the implications for agents of scientific research? What does represent all this for the edition of

  13. [Revista Médica de Chile in the year 2012].

    Science.gov (United States)

    Reyes B, Humberto; Bustos-González, Atilio; Andresen H, Max; Palma H, Joaquín

    2013-08-01

    During the year 2012, 539 manuscripts were submitted to this journal, following an increasing trend in the recent decade. Rejection rate was 33%. This higher number of submissions demanded a larger number and wider scope of external reviews, retarding the editorial process. The mean time lapse from reception to acceptance (or rejection) was 6.3 months (range 2-14) and from acceptance to publication 5.3 months (range 3-7). Research articles were 43.9% of published manuscripts and the remaining articles were Reviews, Special Articles, Case Reports, articles on Medical Ethics, Medical Education, Evidence Based Medicine, Public Health, History of Medicine, Letters to the Editor and others. Thirty seven published manuscripts (14.6%) came from foreign countries and 9 of them were published with full text in English. The 2012 Impact Factor was 0.360, showing little variation from previous years, locating the journal in the upper part of quartil 4 in the ISI-JCR category "Medicine, General and Internal", while the SCImago Journal & Country Rank locates the Revista in quartil 2 of its category "Medicine (miscellaneous)". In contrast with the low citation rate, the number of visits to the open access electronic version in www.scielo.cl averages over 3 million visits per year, illustrating that the interest among readers outnumbers the country's expectable readership. Only 22% of articles declared to have received financial help from entities external to the institution where the work was performed, coming mainly from Chilean Governmental competitive funds. The aim of Revista Médica de Chile is to provide readers and authors a valuable source of information about current relevant topics in general and internal medicine, progress in related specialties and updates in basic sciences, rendering them available to Health professionals in Chile and worldwide, following international standards of ethical and scientific quality in medical publications.

  14. Las comunidades y sus revistas científicas

    Directory of Open Access Journals (Sweden)

    Leonardo Romero

    2014-03-01

    Full Text Available Las investigaciones realizadas y expuestas ante las sociedades científicas, tuvieron en las revistas científicas un medio ex professode comunicación y diseminación de sus memorias y descubrimientos. Sin embargo en el escenario actual los investigadores y las revistas científicas adoptan nuevas características y se ven influenciadas por diferentes tendencias que requieren una estrategia de desarrollo editorial adecuada.

  15. La presencia española en consejos y comités de redacción de revistas científicas internacionales: un instrumento para la promoción de nuestra ciencia

    Directory of Open Access Journals (Sweden)

    Granadino, Begoña

    2006-09-01

    Full Text Available The main objective of this work is to determine the correlation between the Spanish scientific output covered by the first 100 SCI journals ranking with the highest impact factor, and the presence of Spanish researchers in the editorial boards of these journals. The analysis of the editorial boards indicated that the presence of scientists of European scientific institutions as memberships of these editorial boards is very low, being these boards mainly represented by US and British researchers. The presence of Spanish scientists in the editorial boards mentioned is rather low at European and world wide level. From the 3474 members identified, only 16 are Spanish scientists and they are present in editorial boards of 9 journals. These 9 journals, however, do not show higher Spanish scientific production than that of other European countries with similar scientific characteristics, as Italy and The Netherlands. These indicators can be useful for the proposal of measures to enhance the Spanish presence in the editorial boards of the main international scientific journals.<br>>Este trabajo tiene por objetivo determinar la posible correlación existente entre la producción científica española cubierta por las 100 revistas SCI con mayores factores de impacto y la presencia de investigadores españoles en los consejos o comités científicos de dichas revistas. El análisis de la composición de los consejos editoriales ha permitido constatar que la adscripción de instituciones científicas europeas en los comités o consejos editoriales de las 100 primeras revistas del JCR es muy reducida, estando estos órganos mayoritariamente constituidos por investigadores norteamericanos y británicos. La presencia de miembros de instituciones científicas españolas en los comités editoriales es significativamente escasa, tanto desde una perspectiva mundial como a escala europea. De los 3.474 miembros identificados, únicamente 16 son investigadores

  16. Editorial Revista Ciencias Administrativas N°10

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    Comite Ejecutivo Revista CADM

    2017-06-01

    Full Text Available Tenemos el agrado de presentar el Número 10 de la Revista Ciencias Administrativas, correspondiente al periodo julio - diciembre de 2017. Esta edición incluye ocho artículos de autores de la Argentina, Ecuador, España, Francia y México donde se tratan temas relacionados con finanzas, responsabilidad social,  gestión organizacional, administración pública y neurociencia. La revista cumple su primer lustro y con orgullo podemos decir que hemos alcanzado grandes objetivos en un lapso bastante corto en lo que a publicaciones científicas se refiere. Ciencias Administrativas ha ido creciendo número a número y en esta oportunidad aprovechamos para compartir con ustedes un logro reciente. La Universidad Nacional de La Plata ha adquirido el servicio DOI (Digital Object Identifier que asigna a objetos digitales una identificación unívoca que permite citarlos y relacionarlos, por ejemplo, con una institución. Desde este número todos los artículos cuentan con su DOI y, de esa forma, mejoramos la visibilidad e identificación de la Revista para los lectores de todo el mundo. Seguimos avanzando en términos de indexación: a partir de mayo de este año, hemos sido aceptados para formar parte de la base de datos del Núcleo Básico de Revistas Científicas Argentinas (NB que comprende un conjunto de publicaciones científicas y tecnológicas argentinas en los distintos campos del conocimiento evaluadas según criterios definidos de calidad y trascendencia. También queremos informales que, para poder cumplir con una de las exigencias de sitios a los que esperamos ingresar en breve, debemos desempeñarnos con ciertos requisitos de calidad editorial que implican modificar las fechas de publicación de nuestros números. Es por eso que el 1 de julio de este año publicamos el N° 10 de la Revista correspondiente al período julio – diciembre y, a partir de ahora, las ediciones sucesivas serán el 1 de enero y el 1 de julio por los

  17. Thermodynamic assessment of EuBr2 unary and LiBr-EuBr2 and NaBr-EuBr2 binary systems

    International Nuclear Information System (INIS)

    Gong, Weiping; Gaune-Escard, Marcelle

    2009-01-01

    As a basis for the design and development of molten salt mixtures, thermodynamic calculations of the phase diagrams and thermodynamic properties were carried out on the EuBr 2 unary and LiBr-EuBr 2 and NaBr-EuBr 2 binary systems over a wide temperature and composition range, respectively. The Gibbs energy of EuBr 2 was evaluated using an independent polynomial to fit the experimental heat capacity, the thermodynamic parameters for each phase in the LiBr-EuBr 2 and NaBr-EuBr 2 systems were optimized by using available experimental information on phase diagrams. A regular substitutional solution model for the liquid phase and Neumann-Kopp rule for the stoichiometric compound LiEu 2 Br 5 were adopted to reproduce the experimental data with reasonable excess Gibbs energy. Comparisons between the calculated phase diagrams and thermodynamic quantities show that all reliable experimental information is satisfactorily accounted for by the present thermodynamic description. Some thermodynamic properties were predicted to check the suitability of the present calculation.

  18. The locomotor system as seen in Brazilian medical journals: a restricted collection of papers O sistema locomotor nos periódicos médicos Brasileiros: um grupo restrito de artigos

    Directory of Open Access Journals (Sweden)

    Kavita Kirankumar Patel

    2011-08-01

    Full Text Available This review covers recent publications on the motor system (orthopedics and movement in Brazilian journals recently admitted to the ISI-Thomson Journal of Citations Index. Two of these are still pleading for admission into PubMed which will eventually enhance their global visibility. We offer this contribution to experts on these areas who are regular readers of Revista da Associação Médica Brasileira. Full free copies of all of them are available at www.scielo.br. The main areas covered are orthopedics of limb articulations, fractures, movement, posture, gait, exercise and animal modelsEsta revisão abrange publicações recentes sobre o sistema locomotor (ortopedia e movimento em periódicos brasileiros recentemente incluídos na plataforma de citações ISI-Thomson. Dois destes periódicos ainda estão pleiteando inclusão no PubMed o que aumentará sua visibilidade. Oferecemos esta contribuição para especialistas nestas áreas de interesse e que são leitores regulares da Revista da Associação Médica Brasileira. Cópias integrais dos artigos citados estão disponíveis gratuitamente no site www.scielo.br. Os principais temas cobertos são ortopedia e articulações dos membros, fraturas, movimento, postura, marcha e modelos animais

  19. Pathways for the OH + Br2 → HOBr + Br and HOBr + Br → HBr + BrO Reactions.

    Science.gov (United States)

    Wang, Hongyan; Qiu, Yudong; Schaefer, Henry F

    2016-02-11

    The OH radical reaction with Br2 and the subsequent reaction HOBr + Br are of exceptional importance to atmospheric chemistry and environmental chemistry. The entrance complex, transition state, and exit complex for both reactions have been determined using the coupled-cluster method with single, double, and perturbative triple excitations CCSD(T) with correlation consistent basis sets up to size cc-pV5Z and cc-pV5Z-PP. Coupled cluster effects with full triples (CCSDT) and full quadruples (CCSDTQ) are explicitly investigated. Scalar relativistic effects, spin-orbit coupling, and zero-point vibrational energy corrections are evaluated. The results from the all-electron basis sets are compared with those from the effective core potential (ECP) pseudopotential (PP) basis sets. The results are consistent. The OH + Br2 reaction is predicted to be exothermic 4.1 ± 0.5 kcal/mol, compared to experiment, 3.9 ± 0.2 kcal/mol. The entrance complex HO···BrBr is bound by 2.2 ± 0.2 kcal/mol. The transition state lies similarly well below the reactants OH + Br2. The exit complex HOBr···Br is bound by 2.7 ± 0.6 kcal/mol relative to separated HOBr + Br. The endothermicity of the reaction HOBr + Br → HBr + BrO is 9.6 ± 0.7 kcal/mol, compared with experiment 8.7 ± 0.3 kcal/mol. For the more important reverse (exothermic) HBr + BrO reaction, the entrance complex BrO···HBr is bound by 1.8 ± 0.6 kcal/mol. The barrier for the HBr + BrO reaction is 6.8 ± 0.9 kcal/mol. The exit complex (Br···HOBr) for the HBr + BrO reaction is bound by 1.9 ± 0.2 kcal/mol with respect to the products HOBr + Br.

  20. Elastic properties of Cs{sub 2}HgBr{sub 4} and Cs{sub 2}CdBr{sub 4} crystals

    Energy Technology Data Exchange (ETDEWEB)

    Kityk, A.V.; Zadorozhna, A.V.; Shchur, Y.I.; Martynyuk-Lototska, Y.I.; Burak, Y.; Vlokh, O.G. [Institute of Physical Optics, Lvov (Ukraine)

    1998-12-31

    Using ultrasonic velocity measurements, all components of the elastic constant matrix C{sub ij} , elastic compliances matrix S{sub ij}, and linear compressibility constants matrix K{sub ij} of orthorhombic Cs{sub 2}HgBr{sub 4} and Cs{sub 2}CdBr{sub 4} crystals have been determined over a wide temperature range, including the region of the phase transition from the normal to the incommensurate phase. Results obtained are considered within the framework of the phenomenological theory. Preliminary analysis of the acoustical properties at room temperature clearly indicates that both crystals are relatively important materials for acousto-optical applications. Copyright (1998) CSIRO Australia 16 refs., 1 tab. 8 figs. The URL for the electronic version of this article is http://www.publish.csiro.au/journals/ajp/electronic.html

  1. La multidisciplinariedad de las revistas de comunicación españolas y extranjeras

    Directory of Open Access Journals (Sweden)

    Jorge Mañana Rodríguez

    2013-08-01

    Full Text Available La comunicación puede entenderse como un macrocontexto epistemológico del que la educación participa como una parte. El análisis de la correspondencia entre esta relación teórica epistemológica y la interacción real entre las revistas de educación y comunicación es uno de los objetivos de este trabajo. Al mismo tiempo, los patrones de citación de las revistas españolas de comunicación, en cuanto a la procedencia de las citas recibidas o emitidas por las revistas de comunicación en el Journal Citations Report, pueden presentar diferencias que dificulten el intercambio de información entre ambos conjuntos. Se analiza la distribución de citas según disciplina citante para las revistas españolas y extranjeras de comunicación, así como para «Comunicar», y la frecuencia de aparición de revistas con tasa de afinidad según su disciplina para las revistas en la «Subjet Category Communication» de JCR. Se concluye que la relación epistemológica entre educación y comunicación se da únicamente en el caso español, que existen marcadas diferencias en la composición disciplinar de las revistas afines y citantes al comparar las revistas españolas con las indexadas en JCR. Además, la interacción con las revistas del área «Information Science & Library Science» podría ser un canal de comunicación entre ambos conjuntos de revistas. Finalmente, se corrobora la correspondencia de la característica multidisciplinariedad de «Comunicar» en el ámbito nacional e internacional.

  2. Monitoramento de revistas científicas na web com a ferramenta Google Analytics: reflexões a partir da Revista Comunicação & Informação

    Directory of Open Access Journals (Sweden)

    João de Melo Maricato

    2015-04-01

    Com a web surgem os indicadores webométricos, análogos aos tradicionais indicadores bibliométricos e cientométricos. Estes podem ser úteis para compreender a popularidade e visibilidade de revistas científicas, subsidiando reflexões gerenciais. Objetiva-se apresentar a ferramenta Google Analytics aplicando-a a Revista Comunicação & Informação, com intuito de compreender sua potencialidade para a obtenção de informações e indicadores. A ferramenta Google Analytics proporcionou a elaboração e visualização de diversos indicadores baseados em visitas realizadas no site da revista e suas inúmeras variáveis (demográficas, tipo de tecnologia, assuntos, temporais, apontando grande potencial para o apoio à gestão e planejamento editorial de revistas científicas.

  3. Revista do Globo: as mulheres porto-alegrenses nas práticas equestres Revista do Globo Magazine: Porto Alegre's women in equestrian practices

    Directory of Open Access Journals (Sweden)

    Ester Liberato Pereira

    2011-06-01

    Full Text Available O turfe e o hipismo são assuntos veiculados pela Revista do Globo, editada em Porto Alegre, capital do estado do Rio Grande do Sul, de 1929 até 1967. O objetivo deste estudo histórico foi identificar que representações das mulheres nas práticas equestres em Porto Alegre foram produzidas pela Revista do Globo no período de sua publicação. Realizou-se uma análise de conteúdo das reportagens da revista acerca destas práticas. As reportagens sugerem duas imagens sobre as mulheres no contexto das práticas equestres: no turfe, a presença feminina é limitada à assistência, associada à elegância, à fragilidade; no hipismo, as mulheres competem com igualdade com os homens, alcançando vitórias. Este olhar remete à análise do contexto sociocultural e político-econômico porto-alegrense que sustentou tais práticas equestres, cada qual reservando à mulher distintas possibilidades de atuação. Tais representações construídas pela revista podem resultar das distintas origens históricas e étnico-culturais do turfe e do hipismo.Turf and show jumping are topics diffused by Revista do Globo magazine, edited in Porto Alegre, Rio Grande do Sul's capital state, from 1929 until 1967. The aim of this study was to identify which women's representations in equestrian practices in Porto Alegre were produced by Revista do Globo magazine in its publication period. A content analysis of the magazine´s reports about these practices was carried out. The reports suggest two images about women in equestrian practices context: in turf, feminine presence limited to assistance and to elegance and frailty. In show jumping, women, competing with equality with men, reaching victories. This magazine's look remits to social cultural and political economical Porto Alegre´s context analysis which sustained both equestrian practices, each one reserving different possibilities of actuation to the woman. These representations constructed for women by the

  4. Publicación Estudiantil en Revistas Médicas Venezolanas, 2001 - 2005

    Directory of Open Access Journals (Sweden)

    Rafael Angulo

    2008-01-01

    Full Text Available Objetivo: Cuantificar la participación estudiantil en la publicación de contribuciones originales en revistas médicas venezolanas. Diseño: estudio observacional ,retrospectivo. Lugar: Hemeroteca de la Facultad de Medicina de la Universidad de Los Andes y en la página web de SciELO Venezuela. Población: artículos originales, comunicaciones cortas y cartas al editor, publicadas en el periodo 2001 al 2005, en los volúmenes de revistas de periodicidad trimestral actualizadas. Intervenciones: revisión de la filiación de los autores (estudiante o profesional, universidad y escuela de procedencia, tipo de artículo y revista de publicación. Principales resultados: frecuencia y porcentaje de artículos con participación estudiantil. Resultados: se incluyeron 333 contribuciones originales de tres revistas, en 3,9% (11 hubo participación estudiantil en la autoría. La Revista de la Sociedad Venezolana de Microbiología fue la que publicó más artículos estudiantiles (5. El año 2002 se registraron seis publicaciones, sin encontrar una tendencia por año. Todas las publicaciones fueron realizadas entre profesionales y estudiantes, en todos los casos un profesional fue el primer autor. Conclusiones: la participación estudiantil en la publicación de artículos en revistas médicas venezolanas está presente pero en un bajo porcentaje. Se recomienda orientar a los estudiantes en la publicación de sus investigaciones.

  5. Estudio de los colegios invisibles en la revista "Apunts" (1964-1993)

    OpenAIRE

    Calatayud Miquel, Francisco; Balaguer Sola, Isabel

    2000-01-01

    En el presente trabajo estudiamos la estructura de los grupos de autores de la revista Apunts, así como los temas sobre los que escribieron estos profesionales, procedentes de diferentes disciplinas del mundo del deporte, entre los años 1964 y 1993 en la revista de estudio. En nuestro interés por conocer la evolución de la Educación Física y las Ciencias del Deporte a través de una revista elegimos de entre las de mayor relevancia y más tiempo de presencia: Apunts. Elegimos 1993 como el últim...

  6. Psicología del aprendizaje: investigación basica publicada en revistas iberoamericanas indexadas

    OpenAIRE

    Rubén Ardila; Andrés M. Pérez-Acosta; Germán Gutiérrez

    2005-01-01

    Se analizan las tendencias en la investigación básica sobre psicología del aprendizaje y su impacto, con base en los trabajos publicados en las principales revistas de psicología en español: Revista Latinoamericana de Psicología (RLP), Psicothema (PT), Revista Mexicana de Psicología (RMP), y Revista Interamericana de Psicología (RIP). Las tres primeras están indexadas por el Institute for Scientific Information (ISS), y la cuarta lo estuvo hasta hace pocos años. Los porcentajes...

  7. Revista Investigacion Educativa, 1992-1995.

    Science.gov (United States)

    Revista Investigacion Educativa, 1995

    1995-01-01

    This document consists of the eight issues of the series "Revista Investigacion Educativa" published during the 4-year period 1992-1995. This review of educational investigation seeks to promote the exchange of information about empirical research in education. It is published semiannually, and includes reports of both quantitative and…

  8. [Half century of botany publishing in Revista de Biologia Tropical].

    Science.gov (United States)

    León, Jorge

    2002-01-01

    Over its first half century the Revista de Biología Tropical published many papers and supplements dealing with the botany. However, the Revista is not a primary botanical journal. A wide variety of topics and geographic sources have been included, taking into consideration species from the Neotropics, but also from India and Nigeria. A complete index of botanical papers is presented.

  9. A importância do desenvolvimento de revistas científicas em mídia digital: O caso da Revista Agrarian

    Directory of Open Access Journals (Sweden)

    Poliana Campos Burin

    2014-03-01

    Full Text Available Estudos e pesquisas são ações fundamentais em qualquer área do conhecimento e funcionam como alicerces no processo de evolução e desenvolvimento. Tão importante quanto a geração do conhecimento é a disseminação e difusão destas informações, utilizando meios de comunicação abrangentes e eficientes. O objetivo dos autores foi apresentar o caso da Revista Científica Agrarian: sua criação, desenvolvimento e consolidação, enfatizando os resultados e ações obtidos durante seus 6 anos em atividade. A revista científica foi criada em 2008, sendo a primeira revista científica de Mato Grosso do Sul de acesso aberto e totalmente digital que publica trabalhos nas áreas de Ciências Agrárias, Ciência e Tecnologia de Alimentos, Economia e Administração do Agronegócio. A Agrarian recebe submissões de todas as regiões do país, o que possibilita disponibilizar conhecimentos de grande importância ao público, entre técnicos, pesquisadores e estudantes. Foram publicadas vinte e uma edições entre os anos 2008-2013, todas disponibilizadas no Sistema Eletrônico de Editoração de Revistas (SEER. Com um número de 615 submissões e 285 artigos publicados, é possível concluir que a Revista Agrarian está se tornando um veículo de informação confiável e consolidado. Estes dados também confirmam as hipóteses relacionadas à importância de veículos práticos e econômicos para a difusão do conhecimento científico agrário no Estado do Mato Grosso do Sul, importante centro do agronegócio no País.

  10. Gestão da informação em bibliotecas universitárias: as práticas do Sistema de Bibliotecas da Universidade Federal de Goiás (Sibi/UFG

    Directory of Open Access Journals (Sweden)

    Luciana Alves Ferreira

    2013-01-01

    Full Text Available Esta pesquisa descritiva e exploratória objetivou verificar se as atuais práticas de gestão da informação do Sistema de Bibliotecas da Universidade Federal de Goiás (Sibi/UFG atendem às necessidades de informação dos usuários da área de saúde, dos cursos de graduação e pós-graduação (Stricto sensu em Biomedicina e Enfermagem. Para tanto, utilizou-se o modelo de gerenciamento da informação proposto por Choo e realizou-se um estudo de usuário em relação ao uso da Biblioteca Virtual em Saúde da BIREME. Concluiu-se que a gestão da informação no Sibi/UFG é relativamente capaz de atender às necessidades de informação dos usuários dos cursos de Biomedicina e Enfermagem.

  11. Internacionalización de las revistas contables: un aporte al debate polifónico

    OpenAIRE

    Macías, Hugo A.; Universidad de Medellín

    2013-01-01

    Luego del debate sobre las revistas contables colombianas publicado en la revista Investigación y Reflexión, 20 (2), de diciembre de 2012, y de la segunda versión del mismo, publicada en la revista Cuadernos de Contabilidad, 14 (34), de enero-junio de 2013; en esta tercera versión se hace un aporte centrado en la dinámica internacional de las revistas contables y en la participación de autores colombianos y latinoamericanos en ella. En las versiones anteriores, se presentaron las característi...

  12. Remote MINOS Shift Station at IF-UFG

    International Nuclear Information System (INIS)

    Tognini, Stefano Castro; Gomes, Ricardo Avelino

    2011-01-01

    Full text: MINOS is a very well known neutrino experiment mainly designed to study neutrino oscillations and measure the parameters that rule the phenomena. The experiment uses an intense neutrino beam provided by the NuMI (Neutrinos at the Main Injector) beamline at Fermilab and two similar magnetized detectors - the Near Detector located at Fermilab, 1 km downstream the target and 94 m underground; and the Far Detector located in the Soudan Mine in northern Minnesota, 734 km downstream the Near Detector and 713 m underground. The MINOS control room is consisted of four main systems used to monitor the beam, the detectors and the data acquisition process: the Beam Monitoring System - a set of tools used to monitor the status of the NuMI beam, such as its intensity, its alignment with the target and beamline and if the beam data acquisition is working properly; the Online Monitoring System (OM) - responsible for monitoring the electronics of both detectors, which determines the quality of the data; the Detector Control System (DCS) - which monitors the detectors information, such as the high voltage systems, state of the rack protection system, the magnet control, chiller monitor, coil current, humidity and environmental temperatures; and the Data Acquisition System (DAQ) - used to control the runs/subruns and monitor the recording process. The experiment is taking data with the Far Detector since 2003 and with the Near Detector since 2005. The Physics Institute of the Federal University of Goias (IF-UFG) is joining the MINOS Collaboration since June 2009 and this work describes the configuration of our Remote MINOS Shift Station. In order to accomplish the shift tasks with minimum expenditure of time and money efforts, MINOS decided to authorize remote shifts on January 2011. Apart of being able to realize remote shifts, the main goals of our shift station are to allow the training of new users, in particular graduate students; to allow our real-time monitoring of

  13. [The Revista Médica de Chile in a science library in the Internet].

    Science.gov (United States)

    Reyes, H

    2001-02-01

    Medical journals published in non-English languages face a handicap: their worldwide readership and citation are reduced in comparison to journals published in English. This handicap is worse for small journals edited in developing countries, regardless of whether they publish original research articles including abstracts in English. To facilitate the international diffusion of selected Chilean scientific journals, the "Comisión Nacional de Investigación Científica y Tecnológica" enforced the program "SciELO Chile" with a web site in Internet (www.scielo.cl) including the full text of articles published in recent issues. Revista Médica de Chile is the first Chilean medical journal that appears in this web site, sponsored by the National Library of Medicine, Washington D.C. We expect that this web site will give a favorable input to authors of articles published in our journal.

  14. Evaluación y clasificación de las revistas científicotécnicas españolas de Ciencias de la Actividad Física y el Deporte

    Directory of Open Access Journals (Sweden)

    Valenciano Valcárcel, Javier

    2008-09-01

    Full Text Available This paper evaluates and classifies Spanish Physical Activity and Sports Science journals according to their overall quality. A previously validated assessment model combining 23 indicators of style, scientific content and diffusion characteristics was used for this purpose. This model classifies journals into four quality categories: ‘very high’, ‘high’, ‘medium’ and ‘low’. None of the 28 journals studied fell into the top category, 25% fell into the ‘high’ category, 50% into the ‘medium’ category, and the remaining 25% into the ‘low’ category. A general improvement was observed compared to previous assessments of these journals, although deficient standardization and a non frequent use of the blind peer review process were still evident. In addition, their visibility (especially in databases remains limited.<br>>En este artículo se evalúan y clasifican las revistas españolas de Ciencias de la Actividad Física y el Deporte (CCAFD, atendiendo a su calidad global. Para ello se aplica un modelo de evaluación, validado con anterioridad, que combina 23 indicadores relativos a diferentes características de las revistas (formales, de contenido científico y difusión. De esta manera pueden clasificarse las publicaciones periódicas en cuatro categorías de calidad: ‘muy alta’, ‘alta’, ‘media’ y ‘baja’. Los resultados indican que ninguna de las 28 publicaciones existentes alcanza la categoría superior, el 25% obtiene una calidad ‘alta’, el 50% una calidad ‘media’ y otro 25% una calidad ‘baja’. Aunque se observa una mejoría general de las revistas respecto a otras evaluaciones anteriores, todavía se aprecian deficiencias en la normalización, un uso no mayoritario del sistema de revisión ‘ciego por expertos’ y una visibilidad limitada, sobre todo, en bases de datos.

  15. Editorial Revista GeAS v.6 n.3 Setembro /Dezembro 2017

    Directory of Open Access Journals (Sweden)

    Claudia Terezinha Kniess

    2017-12-01

    Full Text Available É com satisfação que apresentamos a última edição do ano de 2017 da revista Gestão Ambiental e Sustentabilidade - Revista GeAS. A Revista GeAS consolida-se a cada edição como um importante meio para divulgação e discussão de trabalhos científicos que contribuem com o avanço das pesquisas na área de Gestão Ambiental e Sustentabilidade, agora com a ampliação do seu alcance por meio dos indexadores Emerging Sources Citation Index da Web of Science (ESCI e Sistema de Información Científica Redalyc - Red de Revistas Científicas de América Latina y el Caribe, España y Portugal. A revista GeAS é classificada como Qualis B2 na área de avaliação da CAPES de Administração e Qualis B3 na área de Planejamento Urbano Regional - Demografia. No ano de 2017 alcançou um número expressivo de submissões, contanto com 270 artigos recebidos. A presente edição da Revista GeAS contempla um conjunto de dez artigos selecionados por meio da avaliação por pares em sistema blind review, que abrangem temáticas de interesse no contexto acadêmico e empresarial, como também da comunidade de modo geral. Os artigos publicados nesta edição discutem temas relacionados a: sustentabilidade e gestão da imagem; ordenamento territorial; logística reversa; responsabilidade social corporativa; gestão do capital intelectual; governança de TI verde; tratamento de águas residuárias; recursos minerais; gestão da coleta seletiva de resíduos sólidos entre outros.

  16. Thermodynamic assessment of NdBr3 unary and LiBr-NdBr3 binary system

    International Nuclear Information System (INIS)

    Gong Weiping; Gaune-Escard, Marcelle

    2006-01-01

    Phase diagram and thermodynamic properties calculations were carried out on the NdBr 3 unary and the LiBr-NdBr 3 binary systems over the entire temperature and composition range, respectively. The Gibbs energy of NdBr 3 was evaluated using an independent polynomial to fit the experimental thermodynamic properties. The liquid phase in the LiBr-NdBr 3 system was described by the two sub-lattice ionic solution model (Li + ) P : (Br - , NdBr 6 -3 , NdBr 3 ) Q . Comparisons between the calculated phase diagram and thermodynamic quantities show that all reliable experimental information was satisfactorily accounted for by the present thermodynamic description

  17. Propuesta de un sistema de evaluación de revistas científica en las áreas de Ciencias Humanas y Sociales

    Directory of Open Access Journals (Sweden)

    López Baena, Alfonso Juan

    2005-03-01

    Full Text Available A quality assessment of journals in seven scientific fields (Law, Economics, Art & History, Social Sciences, Philology, Philosophy, Educational Sciences and Psychology is shown in this article. The main goal is the availability of an accurate tool in order to be used in assessments of R&D activities in Spain, jointly to ISI databases information (JCR mainly.<br>>El presente trabajo expone una experiencia de evaluación de publicaciones científicas en las áreas humanas y sociales en siete grandes campos científicos: ciencias jurídicas, ciencias económicas, historia y arte, ciencias sociales, filología, filosofía y ciencias de la educación y psicología. El objetivo fundamental es elaborar un listado de revistas ordenadas según nivel de calidad que sirva como complemento a la información suministrada por las bases de datos del ISI (Social Sciences Citation Index y Arts and Humanities Citation Index, para poder emprender evaluaciones de la actividad investigadora en estas áreas con una base cuantitativa suficiente.

  18. Una revista distinta: Ellas

    Directory of Open Access Journals (Sweden)

    Requena Hidalgo, Cora

    2014-06-01

    Full Text Available This article focuses on the women’s magazine Ellas, published in the mid-nineteenth century in Madrid, and discusses its relationship with other approximately contemporary magazines and newspapers in order to contribute to a reconstruction of the history of women’s publications in the Spanish press. The approach is based on an analysis of the text of each issue of the magazine and comparison with other publications, where applicable. Key features of the article include a reflection on the social rights of women, an attempt to analyse the main differences between women and men and defining features of sexual gender, the need for women’s education, etc. Studying the magazine’s content clearly reveals a continual tension between progressive and conservative ideas typical of the historical context in which gender studies emerged in Spain.Este artículo centra su atención en la revista para mujeres Ellas, publicada a mediados del siglo XIX en Madrid. Analiza, asimismo, la relación de esta publicación con algunas otras revistas y periódicos de su contexto histórico próximo, con el fin de contribuir a la reconstrucción de una Historia de las publicaciones para mujeres en la prensa española. Para ello se utiliza el análisis de textos que forman parte de los números que componen la revista, así como el análisis comparativo entre publicaciones, cuando es pertinente. Entre los aspectos de mayor interés que el artículo pone de relieve se encuentra la reflexión sobre los derechos sociales de las mujeres, el intento de análisis de las principales diferencias entre mujeres y hombres y de los rasgos definitorios de los géneros sexuales, la necesidad de educación de las mujeres, entre otros. El estudio del contenido de la publicación revela claramente una tensión contradictoria continua entre las ideas progresistas y las ideas conservadoras propias del momento histórico que dieron origen en España al nacimiento de los estudios de género.

  19. Gestão da informação em bibliotecas universitárias: as práticas do Sistema de Bibliotecas da Universidade Federal de Goiás (Sibi/UFG

    Directory of Open Access Journals (Sweden)

    Luciana Alves Ferreira

    2013-04-01

    Full Text Available http://dx.doi.org/10.5007/1518-2924.2013v18n36p181   Esta pesquisa descritiva e exploratória objetivou verificar se as atuais práticas de gestão da informação do Sistema de Bibliotecas da Universidade Federal de Goiás (Sibi/UFG atendem às necessidades de informação dos usuários da área de saúde, dos cursos de graduação e pós-graduação (Stricto sensu em Biomedicina e Enfermagem. Para tanto, utilizou-se o modelo de gerenciamento da informação proposto por Choo e realizou-se um estudo de usuário em relação ao uso da Biblioteca Virtual em Saúde da BIREME. Concluiu-se que a gestão da informação no Sibi/UFG é relativamente capaz de atender às necessidades de informação dos usuários dos cursos de Biomedicina e Enfermagem.

  20. Aporte estudiantil en la publicación de artículos científicos en revistas médicas indizadas en Scielo-Perú, 1997 - 2005

    Directory of Open Access Journals (Sweden)

    Charles Huamaní

    2008-03-01

    Full Text Available Objetivo: Cuantificar la participación estudiantil en la publicación de artículos originales en revistas médicas peruanas indizadas a SciELO Perú. Diseño: Estudio observacional retrospectivo. Lugar: Hemeroteca de la Facultad de Medicina UNMSM y en www.scielo.org.pe. Población: Artículos originales, comunicaciones cortas (incluye casos clínicos y cartas al editor publicadas en volúmenes correspondientes a 1997 hasta 2005, en revistas de periodicidad trimestral actualizadas. Intervenciones: Revisión de la filiación de los autores (estudiante o profesional; sexo, universidad y carrera de procedencia, tipo de artículo y área de investigación (clínica, biomédica y salud pública. Principales resultados: Frecuencia y porcentaje de artículos con participación estudiantil. Resultados: Se incluyó 865 contribuciones originales de cuatro revistas; en 4,5% (39 de ellas hubo participación estudiantil en la autoría, 74% (29/39 fueron artículos originales, 10 comunicaciones cortas y ninguna carta al editor. Anales de la Facultad de Medicina fue la revista que publicó más artículos estudiantiles (6,6%. La mediana fue de cinco artículos estudiantiles por año. Diez artículos fueron realizados solo por estudiantes, 87% procedía de tres universidades (Universidad Nacional Mayor de San Marcos, Universidad Peruana Cayetano Heredia y Universidad Privada Antenor Orrego y 58%, del área clínica. La mayoría (72% de los autores fue varón. Conclusiones: La participación estudiantil en la publicación de artículos en revistas médicas peruanas indizadas en SciELO Perú es baja. Se recomienda capacitar a los estudiantes en la publicación de sus investigaciones, incluyendo cursos o tópicos en la formación médica universitaria.

  1. ??ndice H de las revistas espa??olas de Ciencias Sociales seg??n Google Scholar (2001-2010)

    OpenAIRE

    Delgado L??pez-C??zar, Emilio; Marcos Cartagena, Diego; Cabezas-Clavijo, ??lvaro; Jim??nez-Contreras, Evaristo; Ruiz-P??rez, Rafael

    2012-01-01

    Se presentan los ??ndices de impacto de las revistas espa??olas de Ciencias Sociales que figuran en IN-RECS (??ndice de Impacto de las Revistas Espa??olas de Ciencias Sociales) calculados a partir de Google Scholar. A partir de una b??squeda de las distintas variantes de t??tulo de las revistas se ordenan de acuerdo con su ??ndice H y G. Las b??squedas se realizaron en julio de 2011 y se midi?? el impacto de la revista a partir de los art??culos publicados entre 2001 y 2010

  2. El futuro de las revistas científicas españolas: un esfuerzo científico, social e institucional

    Directory of Open Access Journals (Sweden)

    Díaz, Mario

    2001-09-01

    of specific funds. In addition, there are/were some journals fully supported by public funds, but they have disappeared or are not published periodically. This situation contradicts the government’s objectives to promote the Spanish language and to obtain returns from the investment in training high-level scientists. On this basis, a way to ensure the long-term maintenance of the Spanish journals would be to enhance alternatives such as the publication of local studies or the support and training of novel scientists. This option may be carried out by the scientific societies without institutional aid by means of i.e. reducing the subscription assuming that some disagreements between the scientific and non-scientific partners were solved properly. However, this would limit the international projection of the Spanish journals. The only alternative would be a social, institutional and political agreement aimed at promoting the Spanish journals with the best perspectives of international diffusion, either already established or new. The final goal should be the inclusion of these journals in the ISI list. In this way, the co-ordinated efforts of scientists, scientific societies and the Administration would eventually reach the objective of maintaining highquality scientific journals, one of the main medium-term returns of the investment in science.<br>>A pesar del elevado y creciente nivel y producción científica de los investigadores españoles sobre biología de vertebrados terrestres, las revistas españolas dedicadas a estos organismos se encuentran, paradójicamente, en una delicada situación que compromete seriamente su futuro. En este trabajo se resumen las conclusiones obtenidas al analizar la situación actual y las perspectivas futuras de estas revistas, que son plenamente aplicables a la mayor parte de las revistas científicas de países como el nuestro. El prestigio internacional de una revista determina en gran medida la calidad y cantidad de los

  3. Bromine-rich Zinc Bromides: Zn6Br12(18-crown-6)2×(Br2)5, Zn4Br8(18-crown-6)2×(Br2)3, and Zn6Br12(18-crown-6)2×(Br2)2.

    Science.gov (United States)

    Hausmann, David; Feldmann, Claus

    2016-06-20

    The bromine-rich zinc bromides Zn6Br12(18-crown-6)2×(Br2)5 (1), Zn4Br8(18-crown-6)2×(Br2)3 (2), and Zn6Br12(18-crown-6)2×(Br2)2 (3) are prepared by reaction of ZnBr2, 18-crown-6, and elemental bromine in the ionic liquid [MeBu3N][N(Tf)2] (N(Tf)2 = bis(trifluoromethylsulfonyl)amide). Zn6Br12(18-crown-6)2×(Br2)5 (1) is formed instantaneously by the reaction. Even at room temperature, compound 1 releases bromine, which was confirmed by thermogravimetry (TG) and mass spectrometry (MS). The release of Br2 can also be directly followed by the color and density of the title compounds. With controlled conditions (2 weeks, 25 °C, absence of excess Br2) Zn6Br12(18-crown-6)2×(Br2)5 (1) slowly releases bromine with conconcurrent generation of Zn4Br8(18-crown-6)2×(Br2)3 (2) (in ionic liquid) and Zn6Br12(18-crown-6)2×(Br2)2 (3) (in inert oil). All bromine-rich zinc bromides contain voluminous uncharged (e.g., Zn3Br6(18-crown-6), Zn2Br4(18-crown-6)) or ionic (e.g., [Zn2Br3(18-crown-6)](+), [(Zn2Br6)×(Br2)2](2-)) building units with dibromine molecules between the Zn oligomers and partially interconnecting the Zn-containing building units. Due to the structural similarity, the bromine release is possible via crystal-to-crystal transformation with retention of the crystal shape.

  4. [Dissemination of German medicine in Spain and Latin America: the "Revista Médica de Hamburgo" and the "Revista Médica Germano-Ibero-Americana" (1920-1933)].

    Science.gov (United States)

    Sá, Magali Romero; Cândido da Silva, André Felipe

    2010-01-01

    This article presents the development of the journals "Revista Médica de Hamburgo" and "Revista Médica Germano-Ibero-Americana," which were created to promote and disseminate the German science among the medical community in Latin America and Spain between the two World Wars. Shaken by the loss of Germany's colonies in Africa, the difficulties faced due to post-war economy, and the restrictions imposed by the armistice, the Germans sought to restore their cultural and scientific prestige through such initiative.

  5. Novas direções para a revista motricidade

    Directory of Open Access Journals (Sweden)

    Tiago M Barbosa

    2015-05-01

    Full Text Available A revista Motricidade tem um passado na difusão do conhecimento em Ciências do Desporto e áreas afins ao movimento humano nos países lusófonos. Está indexada nas principais bases de dados internacionais como a ISI Web of Knowledge/Scielo Citation Index (Thomson Reuters, Elsevier (SCOPUS, EMCare, SCImago (SJR: Medicine, Health Professions. Está classificada em onze áreas Qualis, sendo atribuída a classificação de B1 nas principais áreas estratégicas da revista. Tal só foi possível devido ao esforço, dedicação das direções e dos corpos editoriais anteriores. Foi portanto com muito orgulho e com sentido de responsabilidade que aceitei ser editor-chefe desta revista. A nossa visão é que será possível de forma sustentada melhorar estes indicadores continuando a ser a revista de referência nas áreas em causa para os países lusófonos, sem deixar de abrir espaço a autores e leitores de outras regiões. A Motricidade continuará a ter como sua missão o desenvolvimento e disseminação do conhecimento científico de carácter teórico, analítico e empírico nas áreas científicas do desporto, educação física, movimento humano e saúde. São bem-vindos trabalhos nas chamadas recorrentemente Ciências Biomédicas, Ciências Sociais, áreas tecnológicas ou de natureza interdisciplinar com recurso a métodos quantitativos, qualitativos ou mistos. Os manuscritos continuarão a ser submetidos a revisão pelos pares. Numa primeira fase a revisão será interna, por parte do corpo editorial da revista. De seguida, a revisão passará a ser externa pelos pares. Ultimamente tem havido uma vaga de preocupação quanto ao processo de revisão se centrar excessivamente na perceção por parte de editores e de revisores da possível relevância dos resultados reportados. Tem havido uma forte crítica de ser um número reduzido de académicos a determinar a relevância de um artigo antes da sua publicação ou rejeição. Dai que

  6. Revista de Saúde Pública: quarenta anos da produção científica no Brasil Revista de Saúde Pública: forty years of Brazilian scientific production

    Directory of Open Access Journals (Sweden)

    Júlio Cesar Rodrigues Pereira

    2006-08-01

    Full Text Available OBJETIVO: Reconhecer as características e trajetória da Revista de Saúde Pública pela análise da produção científica por ela veiculada, no período de 1967-2005. MÉTODOS: Foram analisados por métodos cientométricos dados referenciais dos artigos publicados na Revista e recuperados nas bases de indexação do Institute for Scientific Information (ISI/Thomson Scientific (Web of Science, National Library of Medicine (PubMed e Scientific Eletronic Library Online (SciELO. RESULTADOS: A Revista, sendo a única na área da saúde pública no Brasil, indexada pela ISI/Thomson Scientific, destaca-se como veículo de divulgação da produção científica brasileira em saúde pública e exibe crescimento geométrico de publicações e citações, cujas taxas anuais são de 4,4% e 12,7%, respectivamente. O número de autores cresceu de uma média de cerca de dois por item publicado até 3,5 para os dias atuais. Embora os artigos originais de pesquisa predominem, nos últimos anos aumentou o número de revisões, estudos multicêntricos, ensaios clínicos e de validação; cresceu também o número de artigos publicados em língua estrangeira, com 13% do total, destacando-se a participação da Inglaterra, Estados Unidos, Argentina e México. Aumentou o número e diversidade de revistas que citam a Revista de Saúde Pública, com expressiva participação de revistas internacionais. A distribuição de autorias por autor da Revista ajusta-se muito bem à Lei de Lotka, mas seus parâmetros sugerem maior concentração e menor dispersão do que o esperado. Entre os temas de interesse dos itens publicados, doenças infecto-parasitárias e vetores, promoção, políticas, administração de saúde e epidemiologia, vigilância e controle de doenças responderam por mais de 50% do volume total. CONCLUSÕES: A Revista mostra grande dinamismo sem sinais que sugiram qualquer esgotamento ou estabilidade em futuro próximo. Há sinais de progressivo aumento

  7. A História do Serviço Social Pensada a Partir da “Revista do Padre Saboia” – Revista de Serviço Social – São Paulo

    Directory of Open Access Journals (Sweden)

    Camila Manduca Ferreira

    2010-05-01

    Full Text Available

    O artigo resulta de pesquisa sobre a primeira revista de Serviço Social
    do Brasil (1939-56, publicada pela Escola de Serviço Social de São Paulo,
    primeira unidade de ensino do país (1936. Envolvendo os primeiros assistentes
    sociais mais engajados na Ação Católica e figuras eminentes do período no
    corpo de editores e colaboradores, a Revista Serviço Social alcançou notoriedade
    sob a direção do padre Roberto Saboia de Medeiros, passando a ser
    comumente conhecida como “revista do padre Saboia”. A metodologia privilegiou
    a análise temática dos artigos publicados. A conclusão enfatiza o tratamento
    conservador dado à relação capital/trabalho, à pobreza, à formação
    profissional, ao trabalho do assistente social, às relações com o Estado e as
    visões do país. O estudo mostra também que a Revista Serviço Social é fonte
    primária privilegiada para o estudo da gênese do Serviço Social no Brasil.
    Palavras-chave: Revista Serviço Social; história do Serviço Social; Serviço Social.

  8. [The Revista Médica the Chile and medical education].

    Science.gov (United States)

    Goic, Alejandro

    2002-07-01

    With this issue, Revista Médica de Chile will have been published uninterruptedly, for 130 years. Formal medical education had an early development since Chile became independent from Spain (1817). The first Medical Sciences Course was organized in 1833 by the Irish physician William C Blest. The Santiago Medical Society was founded in 1869 and its journal-Revista Médica de Chile--in 1872. Its first director was Dr. German Schneider. Revista Medica is the oldest serial publication in South America and the second oldest in the Spanish speaking world. This is a remarkable fact for a comparatively young country. With the creation of the Medical Society and Revista Medica, a process of continuous medical education was started and they became a real Graduate School. The Journal has adopted the main changes in knowledge and technology. Some important milestones of its development, during the second half of the 20th century, were the definition of its objectives and structure, the incorporation of peer review of manuscripts (even with foreign reviewers) the adoption of international guidelines for publication, its incorporation into the main biomedical journal indexes, the modernization of its printing process, the making of a computer generated index of all papers published since 1872, its incorporation into a digital library in INTERNET and the active participation of its editors in the World Association of Medical Journal Editors. The success of the journal is influenced by the independence that the Medical Society has conferred to the editors (all outstanding University Professors), as well as to the characteristics of an educational campus "invisible and without tumult" (Ingelfinger).

  9. A Revista Brasileira de Enfermagem: apontando perspectivas para sua análise

    Directory of Open Access Journals (Sweden)

    Mirian Santos Paiva

    2002-02-01

    Full Text Available Esse ensaio propõe algumas reflexões sobre o modo de analisara Revista Brasileira de Enfermagem. A Revista, instrumento de disseminação de conhecimentos e ideologia da enfermagem, tem sido objeto de poucos estudos na profissão. No ensaio, as autoras tomam como referência teórica o triângulo da significação de Pierre Lévy e aspectos da teoria feminista como pontos de partida para a análise proposta. Numa perspectiva para além do formal, a Revista pode e deve ser analisada enquanto um objeto que produz, na sua relação com as enfermeiras, elementos que compõem a cultura, o conhecimento e a simbologia da enfermagem brasileira.

  10. O nascimento da Revista Brasileira de Criminalística

    OpenAIRE

    Ângela Tonietto; Bruno Telles; Charles Albert Andrade; Claudemir Rodrigues Dias Filho; Elvis Medeiros; Juliano de Andrade Gomes; Maria Paula Oliveira Valadares

    2011-01-01

    Nasce a Revista Brasileira de Criminalística (RBC): uma publicação periódica de um antigo anseio da comunidade de Peritos Criminais em ver a produção científica divulgada em revista especializada genuinamente brasileira. A RBC destina-se à publicação de artigos que contribuam para a promoção, a divulgação e o desenvolvimento científico e tecnológico das ciências forenses, referentes aos resultados de pesquisas, avanços, projetos técnico-científicos e relatos de caso relacionados à criminalíst...

  11. Licere: uma revista brasileira de lazer

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    Helder Ferreira Isayama

    2014-12-01

    Full Text Available “Licere: Revista do Programa de Pós-Graduação Interdisciplinar em Estudos do Lazer/UFMG” é um periódico trimestral, lançado em 1998, dedicado a discutir a temática lazer em suas múltiplas dimensões, a partir de uma ótica multidisciplinar. Nesse artigo não pretendemos fazer uma apresentação dos “números” que marcam sua trajetória (acesso, artigos recebidos, artigos recusados etc., mas sim entabular uma refl exão sobre seus caminhos, que têm relação com a própria conformação dos Estudos do Lazer no Brasil. O olhar que lançamos é fruto não só de nossa experiência como editores, mas também do que observamos como autores e pareceristas de outras revistas, notadamente daquelas relacionadas às Ciências do Esporte, com as quais Licere possui relações em função de coincidências históricas.

  12. Revistas españolas de arquitectura, ciencias de la construcción y urbanismo: visibilidad e internacionalidad

    OpenAIRE

    Sorli Rojo, Ángela; Mochón Bezares, Gonzalo

    2013-01-01

    Objetivo: se presenta un estudio sobre el grado de internacionalidad —entendida ésta como la presencia en bases de datos internacionales y los porcentajes de autores extranjeros en las revistas y sus equipos científicos— que demuestran las revistas españolas de arquitectura, ciencias de la construcción y urbanismo. Metodología: se parte de las revistas españolas de estos tres ámbitos científicos que estuvieran presentes en 2010 en el Directorio de revistas de las bases de datos bibliográf...

  13. A presença norte-americana na Revista Politécnica, 1905-1930

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    Luiz Augusto Maia Costa

    2009-06-01

    Full Text Available Leme (1999, en Urbanismo no Brasil - 1895-1965, indica la existencia de cuatro publicaciones técnicas en São Paulo entre 1905-1930: Revista de Engenharia (1879-1884 - 1911-1913, Revista Politécnica (1904-1954 , Revista de Engenharia Mackenzie (1915 - en este momento y Boletim do Instituto de Engenharia (1917-1941. En el presente trabajo nos vamos a concentrar en los números de la Revista Politécnica publicados entre 1905 y 1930, con el objetivo de buscar en ellos la presencia norteamericana, con énfasis en el el proceso de urbanización y en las cuestiones urbanas y urbanísticas. Para eso, hemos consultado a todos los volúmenes existentes de la revista del periodo citado, tratando de detectar las referencias a la producción técnica de ese país, bien como las menciones a proyectos y planes para ciudades de los Estados Unidos. Eso nos ha permitido verificar, por un lado, como los actores sociales de la época veían las experiencias norteamericanas y, por otro lado, cómo esta producción se ha incorporado y estimulado el debate sobre la urbanización y lo urbano paulista en ese momento. Trataremos de acercar ese debate a la constitución del urbanismo en São Paulo.

  14. Presentación de Atlánticas. Revista Internacional de Estudios Feministas

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    Rosa Cobo Bedia

    2016-12-01

    Full Text Available El Centro de Estudios de Género y Feministas ha puesto en marcha Atlánticas. Revista Internacional de Estudios Feministas con el apoyo de la Universidade da Coruña. Con esta publicación digital queremos contribuir, junto a revistas de otras universidades españolas, a la difusión de la teoría feminista y los estudios de género. Las señas de identidad de esta revista son el rigor intelectual y la pluralidad ideológica. Atlánticas, sin embargo, tiene la vista puesta no solo en la universidad sino también en la sociedad civil, pues sabemos que las reflexiones feministas solo son posibles si existe un movimiento feminista activo, crítico y plural. Consideramos que la teoría y la práctica política son inseparables. En el mismo sentido, esta revista no se dirige solo a la comunidad académica y a la sociedad civil española y portuguesa sino también a espacios universitarios y sociales de América Latina, Centroamérica y el Caribe.

  15. El nacionalismo argentino en los años de plomo: la revista Cabildo y el proceso de reorganización nacional (1976-1983

    Directory of Open Access Journals (Sweden)

    Saborido, Jorge

    2005-06-01

    Full Text Available The paper proposes a revision of the discourse and practice of the National Catholicism in the Argentine Republic during the last military dictatorship, the self called “Proceso de Reorganización Nacional”, through its print means, the Cabildo magazine. This paper analyses the trajectory of the magazine, since its initial support to the military forces -under the condition for the military forces to set in motion the “national revolution”- to the increasingly hard criticism as far as the militaries in the government were not willing to carry out the revolution promoted in the magazine. In addition, the paper shows how the military occupation of the Falkland Islands —one of the main nationalistic claims— facilitated a short period of closer relation between the magazine and the military forces, something that concluded with the Argentine defeat in the South Atlantic War.<br>>El trabajo propone una revisión del pensamiento y el accionar del nacionalismo católico en la República Argentina durante la última dictadura militar, el autodenominado Proceso de Reorganización Nacional, a través de su principal órgano de prensa, la revista Cabildo. En él se analizan las circunstancias que llevaron inicialmente a un apoyo condicionado a la gestión de las Fuerzas Armadas, que se fue transformando en una crítica cada vez más dura, en tanto los militares en el poder no se mostraron dispuestos a poner en marcha la “revolución nacional” que se impulsaba desde la revista. Asimismo, se muestra cómo la ocupación de las islas Malvinas —una de las principales reivindicaciones de los nacionalistas— dio lugar a un corto período de acercamiento, que concluyó con la derrota en la guerra del Atlántico Sur.

  16. Contributions of BrCl, Br2, BrOCl, Br2O, and HOBr to regiospecific bromination rates of anisole and bromoanisoles in aqueous solution.

    Science.gov (United States)

    Sivey, John D; Bickley, Mark A; Victor, Daniel A

    2015-04-21

    When bromide-containing waters are chlorinated, conventional wisdom typically assumes HOBr is the only active brominating agent. Several additional and often-overlooked brominating agents (including BrCl, Br2, BrOCl, Br2O) can form in chlorinated waters, albeit at generally lower concentrations than HOBr. The extent to which these additional brominating agents influence bromination rates of disinfection byproduct precursors is, however, poorly understood. Herein, the influence of BrCl, Br2, BrOCl, Br2O, and HOBr toward rates of sequential bromination of anisole was quantified. Conditions affecting bromine speciation (e.g., pH, concentrations of chloride, bromide, and chlorine) were varied, and regiospecific second-order rate constants were calculated for reactions of each brominating agent with anisole, 2-bromoanisole, and 4-bromoanisole. The regioselectivity of anisole bromination changed with pH, consistent with the participation of more than one brominating agent. Under conditions representative of chlorinated drinking water, contributions to bromination rates decreased as BrCl > BrOCl > HOBr > Br2O (Br2 negligible). The second-order rate constant determined for net bromination of anisole by HOBr is up to 3000-times less than reported in previous studies (which assumed HOBr was the only active brominating agent). Accordingly, models that assume HOBr is the only kinetically relevant brominating agent in solutions of free bromine may be insufficient for reactions involving modestly nucleophilic organic compounds.

  17. Temperature dependent absorption spectra of Br(-), Br2(•-), and Br3(-) in aqueous solutions.

    Science.gov (United States)

    Lin, Mingzhang; Archirel, Pierre; Van-Oanh, Nguyen Thi; Muroya, Yusa; Fu, Haiying; Yan, Yu; Nagaishi, Ryuji; Kumagai, Yuta; Katsumura, Yosuke; Mostafavi, Mehran

    2011-05-05

    The absorption spectra of Br(2)(•-) and Br(3)(-) in aqueous solutions are investigated by pulse radiolysis techniques from room temperature to 380 and 350 °C, respectively. Br(2)(•-) can be observed even in supercritical conditions, showing that this species could be used as a probe in pulse radiolysis at high temperature and even under supercritical conditions. The weak temperature effect on the absorption spectra of Br(2)(•-) and Br(3)(-) is because, in these two systems, the transition occurs between two valence states; for example, for Br(2)(-) we have (2)Σ(u) → (2)Σ(g) transition. These valence transitions involve no diffuse final state. However, the absorption band of Br(-) undergoes an important red shift to longer wavelengths. We performed classical dynamics of hydrated Br(-) system at 20 and 300 °C under pressure of 25 MPa. The radial distribution functions (rdf's) show that the strong temperature increase (from 20 to 300 °C) does not change the radius of the solvent first shell. On the other hand, it shifts dramatically (by 1 Å) the second maximum of the Br-O rdf and introduces much disorder. This shows that the first water shell is strongly bound to the anion whatever the temperature. The first two water shells form a cavity of a roughly spherical shape around the anion. By TDDFT method, we calculated the absorption spectra of hydrated Br(-) at two temperatures and we compared the results with the experimental data.

  18. Aproximación a la revista TERESA (1954 – 1975)

    OpenAIRE

    Durón Muniz, Virginia M.

    2016-01-01

    En el presente estudio se desarrollará un análisis de la revista publicada por Sección Femenina entre 1954 y 1975, TERESA. Revista Para Todas Las Mujeres. A través de diversos contenidos principalmente, la moda y la política, aunque también otros como la ciencia o el cine, llegaba mensualmente a un amplio sector de mujeres españolas. Transmitía un modelo de mujer ideal, moral e intelectual, austera y elegante, a través de un discurso didáctico y un lenguaje emocional, cargado de simbolismo. C...

  19. Ecologia em revistas: análise de conteúdo das revistas "Veja" e "IstoÉ" nas décadas de 1970 a 1990

    Directory of Open Access Journals (Sweden)

    Antonio Teixeira de Barros

    2001-02-01

    Full Text Available  Analisa o conteúdo informativo de matérias jornalísticas sobre meio ambiente, publicadas pelas revistas Veja e IstoÉ, nas décadas de 1970 (Eco 72 a 1990 (Eco 92. Os temas que mais se destacam são: poluição, Amazônia, estudos ecológicos e devastação. A tendência de ambas as revistas é priorizar a cobertura de temas ligados ao contexto urbano, além dos chamados "temas globais", como mudanças climáticas, efeito estufa, ecoturismo e espécies ameaçadas de extinção.

  20. Revista Espinhaço entrevistaDra. Bette Otto Bliesner(NCAR Boulder

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    Kourosh Behzadian

    2016-12-01

    Full Text Available Dra. Bette Otto Bliesner foi entrevistada pela Revista Espinhaço durante o BIARI 2016, que ocorreu em Providence (EUA na Brown University. Para este volume especial da Revista Espihaço, a Dra. Bette, pesquisadora do National Center for Atmospheric Research (NCAR e especialista em modelagem climática e paleo-climatologia, traz reflexões sobre seu recente trabalho no IPCC.Esta entrevista foi conduzida por Kourosh Behzadian (University of West London, Douglas Sathler (FIH/Cegeo/UFVJM and Lorena Fleury (UFRGS.

  1. Tesauros en HTML. Un modelo de diseño y estructura para su consulta en la malla mundial (WWW.

    Directory of Open Access Journals (Sweden)

    Valle Bracero, Antonio

    2000-06-01

    Full Text Available A new model is described for outliníng and structuring thesauri for their use as an aid in the database indexing through the World Wide Web (WWW. Several models used in the different on-line help managers were studied and used as main sources on the start up: AcroRead, HTML Help, NetHelp, etc. These on line help systems are used to provide easy access for the users to the operatíon guidelines for several commercial software packages. For this work the guidelines included in the «Microsoft's HTML Help» were used.<br>>The format used for the prototype thesauri in the trials is the native format of the CAT (Confección Automática de Tesauros application developed in CINDOC. From this format and using the methodology outlined in this paper, an HTML file system including search indexes, location indexes and links was developed. This file system allows the user to go to the precise point of the text that refers to the search term. In that point the user will find a number of indications about the relationship between the search term and cither related items. These later ones can be also used as starting points for new searches.<br>>The preliminary trials made with different thesauri, both on-line and on CD-ROM have provided very good results.<br>>Se describe un modelo de diseño y estructura de tesauros para su consulta y utilización en tratamientos de indización de bases de datos a través de la malla mundial (WWW. Como fuentes de estudio de partida se analizaron los modelos empleados en diferentes gestores de documentación de ayuda: AcroRead, HTML Help, NetHelp, etc., utilizados para facilitar, a los usuarios de las diferentes aplicaciones, las normas de uso de las mismas. Para la elaboración del trabajo, se han adoptado las directrices expuestas en «Microsoft's HTML Help».<br>>El formato origen de los tesauros piloto, empleados en las pruebas, ha sido el establecido para la aplicación CAT (Confección Automática de Tesauros

  2. Las revistas académicas como plataforma para la construcción de conocimiento contable

    OpenAIRE

    Macías Cardona, Hugo A.

    2012-01-01

    Las revistas contables latinoamericanas tienen un bajo nivel de desarrollo comparadas internacionalmente, sobre todo por sus escasos aportes a la academia contable mundial. La baja contribución y el desconocimiento que se tiene internacionalmente de las revistas de todas las áreas producidas en nuestra región, se ha llamado hace más de una década la “ciencia perdida”. En el número 12 de la Revista Lúmina se publicó un artículo sobre ese asunto (Macías & Moncada, 2011), que ha causado reaccion...

  3. La Psicología Positiva en la revista Psicodebate (2000- 2007

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    Luciana Mariñelarena-Dondena

    2015-09-01

    Full Text Available El presente trabajo analiza el desarrollo de la Psicología Positiva en la Argentina a través del estudio bibliométrico de la revista Psicodebate. Psicología, Cultura y Sociedad editada por el Departamento de Psicología de la Universidad de Palermo, en el período comprendido entre los años 2000 y 2007. Se realiza un estudio bibliométrico de la revista haciendo especial referencia a tres variables: las temáticas de los artículos publicados, la productividad de los autores y las referencias, en donde es posible evidenciar la importancia de la Psicología Positiva en la publicación objeto de análisis. El trabajo analiza las características de los autores más productivos en los casi 10 años de existencia de la revista. En relación a las referencias bibliográficas, se consideraron las siguientes variables: los autores referenciados, el idioma de las referencias y la antigüedad de las mismas.La presente investigación constituye un estudio ex - post facto retrospectivo, de acuerdo con la clasificación de Montero y León (2002, 2005. La muestra del estudio está constituida por los primeros ocho números de la revista; el análisis de datos se apoya en datos cuantitativos bibliométricos y en la interpretación cualitativa de los mismos. 

  4. Avaliação auditiva no recém-nascido e suas implicações éticas Hearing evaluation on newborn babies and its ethical implications

    Directory of Open Access Journals (Sweden)

    Valeriana de Castro Guimarães

    2010-03-01

    Full Text Available O estudo tem por finalidade examinar a produção bibliográfica que investigou o uso do teste das emissões otoacústicas em recém-nascidos realizado em hospitais, dando ênfase à aprovação do referido artigo junto ao Comitê de Ética em Pesquisa. O método constitui-se numa revisão bibliográfica de artigos nacionais publicados em revistas brasileiras. A busca se deu por meio de bancos de dados da Biblioteca Virtual em Saúde (BVS (http://www.bireme.br, e site de busca (http://www.google.com.br, referentes aos anos de 2004 a 2006, usando os descritores emissões otoacústicas e triagem auditiva ou expressões equivalentes em neonatos, em hospitais. Outro meio foi a busca manual nas listas de referências dos artigos selecionados. Após aplicação dos critérios de inclusão, foram selecionados nove artigos em cinco tipos de revistas. A citação da aprovação do Comitê de Ética e assinatura do termo de consentimento livre e esclarecido pelo responsável estiveram presentes na grande maioria dos artigos, demonstrando a preocupação e respeito dos pesquisadores da área para com o sujeito participante no estudo.The study has as purpose to examine the bibliographic production that investigates the use of the test of otoacoustic emissions in newborn babies done in hospitals. It gives emphasis in the approval of the mentioned article along the Research Ethics Committee. The method consists on bibliographic revision of national articles published in Brazilian journals. The research was realized in databases of the virtual library in health (http://www.bireme.br and at the search engine Google (http://www.google.com.br, considering the period of 2004 to 2006. The key words used were: otoacoustic emissions and hearing triage or equivalent expressions in newborn babies in hospitals. Another source was the manual search in reference lists of the selected articles. After the application of the inclusion rules, nine articles were selected in

  5. Estudio comparativo de tres revistas españolas de Educación Física y Deportes

    Directory of Open Access Journals (Sweden)

    Joaquín Reverter Masià

    2007-09-01

    Full Text Available En el presente artículo se realiza un análisis comparativo de tres revistas del ámbito de la Educación Física y Deportes, editadas en castellano e incluidas en los listados de Latindex, ISOC, IN-RECS, CARHUS. Se comparan las revistas en función de distintos índices bibliométricos (citas por año, citas internacionales, trabajos publicados y factor de impacto y valorativos. El análisis pone de manifiesto que la revista Apunts. Educación Física y Deportes queda mejor situada en la mayoría de parámetros analizados, seguida muy de cerca por la revista de Psicología del Deporte. Se finaliza el trabajo con algunas reflexiones sobre los distintos índices analizados.

  6. La mujer ideal según las revistas femeninas que circularon en México. 1930 - 1950

    Directory of Open Access Journals (Sweden)

    Elvia Montes de Oca Navas

    2003-01-01

    Full Text Available Las décadas de los treinta y cuarenta del siglo XX fueron elementos claves para comprender la historia de los siguientes años; hechos como la Segunda Guerra Mundial fueron fundamentales para ese periodo y los subsecuentes. Durante dichas décadas en México circularon diversas revistas escritas especialmente para mujeres; revistas femeninas que, en buena medida, informaban a sus lectoras acerca de aquello que les interesaba sobre lo que constituía el ideal femenino de entonces y que debían preocuparse por seguirlo. Este ensayo analiza algunas de esas revistas.

  7. La revista femenina: falso emblema de la mujer liberada

    Directory of Open Access Journals (Sweden)

    Dra. Encarnación Pérez Salicio

    2002-01-01

    Full Text Available El largo proceso en la equiparación de los roles sexuales se enfrenta de continuo a los referentes que, desde los medios de comunicación, se ofrecen a la mujer y que pueden imponerse con facilidad sobre aquellos ofrecidos desde la propia sociedad. Los medios tienen una enorme facilidad para convertirse en elementos fundamentales de conocimiento, ¿cómo saber qué piensa, cómo actúa, cómo vive una mujer moderna?. Las mujeres que aparecen en los medios son más reales que la realidad misma porque son arquetipos ajustados a un modelo, liberados de las particularidades que imprime la individualidad. Se debe atribuir a los medios la responsabilidad inherente a su propia influencia social, ya que son capaces de retrasar o estimular los cambios que la propia sociedad demanda.La mujer lee pocos periódicos, sólo el 37% de lectores de periódicos son mujeres. Sin embargo, éstas suponen el 73% de la audiencia de las revistas del corazón y el 96% de las revistas femeninas. Por lo tanto, las revistas son el escaparate en que se mira la mujer, de ahí la importancia de un discurso que frena la transformación de la sociedad al reforzar creencias y valores tradicionales y obviar toda posición de cambio.

  8. Studies on the phase diagram of LiBr-SrBr2 system

    International Nuclear Information System (INIS)

    Mahendran, K.H.; Sujatha, K.; Sridharan, R.; Gnanasekaran, T.

    2003-01-01

    Binary LiBr-SrBr 2 system was investigated using differential scanning calorimetry (DSC) and the equilibrium phases at different compositions were identified using X-ray diffraction (XRD). This system has a compound LiSr 2 Br 5 , and exhibits a eutectic reaction between this compound and LiBr at 434 deg. C and the eutectic has a composition of 35 mol% SrBr 2 . The compound LiSr 2 Br 5 undergoes peritectic decomposition at 484 deg. C. From the DSC and XRD results, phase diagram of the LiBr-SrBr 2 system is constructed

  9. Ler ciencia no Brasil do seculo XIX: a Revista Popular, 1859-1862

    Directory of Open Access Journals (Sweden)

    Giselle Martins Venancio

    2013-11-01

    Full Text Available O objetivo deste texto é analisar como as questões referentes à vulgarização da ciência eram tratadas por um periódico brasileiro do século XIX, a Revista Popular , editada pela Livraria e Casa Editorial Garnier, entre 1859 e 1862. São investigadas as seções relacionadas a esse assunto, analisados os prólogos, identificados os temas tratados na revista em relação às comissões e viagens de exploração científica do território brasileiro, bem como levantados os autores e editores do periódico. A análise aponta para conclusões que evidenciam o importante papel ocupado pela revista na difusão de informações sobre o delineamento de uma possível ciência nacional para um público mais amplo do que aquele formado pelos círculos estritamente intelectuais.

  10. Poesia em Revista: Oroboro

    Directory of Open Access Journals (Sweden)

    Helena Alves Gouveia

    2008-10-01

    Full Text Available http://dx.doi.org/10.5007/1984-784x.2008v8n12p38 A serpente que engole a si mesma é uma figura curiosa do simbolismo de um processo de contínua transformação, de um movimento circular incessante, rumo à infinitude, sem traços de fim ou começo. Oroboro é um nome de origem grega que remete a esta serpente que se morde e penetra em si mesma ao engolir o próprio rabo. Mas também é o nome da revista de cultura editada em Curitiba pelos artistas-editores Ricardo Corona e Eliana Borges.

  11. Calidad metodológica de ensayos clínicos sobre periodoncia publicados en revistas ISI

    Directory of Open Access Journals (Sweden)

    Katherine Morales

    Full Text Available Objetivo: Describir la calidad metodológica de los ensayos clínicos de periodoncia en revistas indexadas en el Institute for Scientific Information. Material y métodos: Estudio observacional descriptivo en el que se evaluaron los ensayos clínicos publicados entre Enero de 2008 y Diciembre de 2012, de las cuatro revistas de periodoncia indexadas a ISI, con mayor factor de impacto en los últimos 5 años según Journal Citation Reports. Se realizó una estrategia de búsqueda en PubMed para cada revista. Sólo los ensayos clínicos fueron seleccionados para el análisis cualitativo por medio de una escala de calidad metodológica. Los datos fueron analizados utilizando el paquete estadístico SPSS Statistics 20 para Windows (IBM., Chicago, USA. y presentados mediante estadística descriptiva. Resultados: De las revistas que cumplieron los criterios de selección, Journal of Clinical Periodontology, Journal of Periodontology, Journal of Periodontal Research e International Journal of Periodontics & Restorative Dentistry, se analizaron 387 ensayos clínicos. De los 24 puntos máximos obtenibles de la escala, la media alcanzada por los manuscritos evaluados fue de 17,45 puntos. Conclusión: La calidad metódológica de los ensayos clínicos en periodoncia, indexados en revistas ISI, fue deficiente.

  12. Producción y repercusión de revistas enfermeras en el Espacio Científico Iberoamericano en 2012

    Directory of Open Access Journals (Sweden)

    Liliana Marcela Reina Leal

    2013-12-01

    Full Text Available Introducción: El análisis de las referencias bibliográficas refleja el desarrollo de los procesos de comunicación científica en las disciplinas científicas. El conocimiento científico enfermero producido en el Espacio Científico Iberoamericano (ECI ha crecido exponencialmente, y su consumo es cada vez mayor. Objetivo: Analizar el consumo y repercusión del conocimiento enfermero producido durante el año 2012 por las enfermeras del ECI. Metodología: Estudio bibliométrico de la producción científica publicada en 37 revistas enfermeras del ECI en el año 2012, a partir de las revistas indexadas en la base de datos CUIDEN. Resultados: Se incluyeron 2736 artículos publicados, con 53451 referencias bibliográficas. La Revista Latino-Americana de Enfermagem fue la revista más consumida en el año 2012. Mientras que la revista con mayor Repercusión Inmediata CUIDEN (RIC e Índice de Inmediatez fue Escola Anna Nery Revista de Enfermagem. Discusión: El comportamiento de los indicadores de producción, consumo y repercusión de las revistas fuente en el año 2012 muestra algunas variaciones frente al anterior análisis, y permite corroborar la evolución científica de la disciplina enfermera.

  13. Requisitos uniformes para preparar los manuscritos enviados a revistas biomédicas

    Directory of Open Access Journals (Sweden)

    1998-01-01

    Full Text Available En 1978, un reducido grupo de directores de revistas médicas generales que se publican en inglés se reunió de manera informal en Vancouver (Canadá a fin de fijar normas con respecto al formato que deberían adoptar los manuscritos enviados a esas publicaciones. Este fue el inicio de lo que con el tiempo llegó a conocerse como el Grupo de Vancouver. Sus requisitos para la preparación de manuscritos, que incluían el formato de las referencias bibliográficas creado por la Biblioteca Nacional de Medicina de los Estados Unidos, se publicaron por vez primera en 1979. Con el paso del tiempo el Grupo de Vancouver creció y se convirtió en el Comité Internacional de Directores de Revistas Médicas (CIDRM, que se reúne una vez al año y que gradualmente ha venido ampliando los temas que le conciernen. El Comité ha producido cinco ediciones de los requisitos uniformes para preparar los manuscritos enviados a revistas biomédicas. A lo largo de los años han surgido asuntos que van más allá de la preparación del manuscrito. Algunos de esos asuntos se han incorporado a los requisitos uniformes, mientras que otros se tratan en declaraciones por separado. Cada declaración se ha publicado en una revista científica.

  14. Hidroterapia y farmacia a través de la revista "Los avisos"

    OpenAIRE

    Canseco González, María del Carmen

    2010-01-01

    La Revista Los Avisos se publicó en Madrid de 1877 a 1886, siendo su propietario el farmacéutico Pablo Fernández Izquierdo. El objeto de nuestra investigación ha sido analizar en esta publicación cuanto era relativo a Hidroterapia y Farmacia. La revista estaba dirigida a los profesionales sanitarios y contaba entre sus redactores con médicos, veterinarios y farmacéuticos. Pablo Fernández Izquierdo se caracterizó por ser liberal, progresista y un gran empresario en el ámbito del periodismo, la...

  15. Declaraciones del Comité Internacional de Directores de Revistas Médicas anexas a las normas de Vancouver

    Directory of Open Access Journals (Sweden)

    1998-04-01

    Full Text Available Estas declaraciones, emitidas por el Comité de Directores de Revistas Médicas como publicación anexa a las normas de Vancouver, abarcan temas relacionados con algunos aspectos legales, éticos y prácticos de la publicación de trabajos de investigación, y de los comentarios que estos suscitan, en revistas biomédicas. Partiendo de la definición de lo que constituye una revista sometida a arbitraje científico, se describen las funciones de los propietarios y directores de revistas y de los miembros de una junta editorial y se establecen normas de conducta en casos de conflictos de intereses, retractaciones o correcciones, fraude y violaciones de la confidencialidad. Por último se exploran, entre otros temas, los problemas que encierra la divulgación de los resultados de investigaciones por los medios de comunicación de masas, la inclusión de material propagandístico en la revista y la aceptación simultánea de manuscritos cuyos autores llegan a conclusiones divergentes sobre los resultados de una misma investigación.

  16. Especialización y revistas académicas españolas de Comunicación

    Directory of Open Access Journals (Sweden)

    V Tur-Viñes

    2014-09-01

    Full Text Available Introducción. La especialización de las revistas se desprende de la clasificación que reciben en bases de datos y de los términos utilizados en su información pública (denominación, temática declarada y público destinatario. La especialización se manifiesta en la imagen proyectada por la revista y es decisiva para su elección y consideración; también indica el grado de consolidación del campo científico. Se adopta el enfoque de la Comunicación Estratégica. Metodología. Se realiza un análisis de contenido de las variables mencionadas en las webs y de las categorías de clasificación en IN-RECS, Dialnet, Carhus Plus+, RESH, DICE, MIAR e ISOC. La muestra está compuesta por 63 revistas académicas españolas de Comunicación. Resultados y conclusiones. La mayoría de revistas (80% utiliza descriptores generalistas coincidentes con el campo científico o área de conocimiento. El 57% de revistas menciona subdisciplinas concretas manifestando un grado de especialización mayor. Se verifica que las denominaciones utilizadas por las bases de datos para nombrar el campo científico y el área de conocimiento presentan cierto desorden y no observan criterios comunes.

  17. www.ajol.info www.bioline.org.br/ja The Abundance and ...

    African Journals Online (AJOL)

    ADOWIE PERE

    indication that the area is an important ecological zone for benthos macroinvertebrates conservation. ... Heck and Coen, (1995), the estuarine and mangroves ..... ecological services. Callinectes amnicola was the most abundant and are economically important species locally; hence the need to integrate a sustainable ...

  18. Surfactant-promoted reactions of Cl2 and Br2 with Br- in glycerol.

    Science.gov (United States)

    Faust, Jennifer A; Dempsey, Logan P; Nathanson, Gilbert M

    2013-10-17

    Gas-liquid scattering experiments are used to explore reactions of gaseous Cl2 and Br2 with a 0.03 M solution of the surfactant tetrahexylammonium bromide (THABr) dissolved in glycerol. At thermal collision energies, 79 ± 2% of incident Cl2 molecules react with Br(-) to form Cl2Br(-) in the interfacial region. This reaction probability is three times greater than the reactivity of Cl2 with 3 M NaBr-glycerol, even though the interfacial Br(-) concentrations are similar in each solution. We attribute the high 79% uptake to the presence of surface THA(+) ions that stabilize the Cl2Br(-) intermediate as it is formed in the charged, hydrophobic pocket created by the hexyl chains. Cl2Br(-) generates the single exchange product BrCl in a 1% yield close to the surface, while the remaining 99% desorbs as the double exchange product Br2 over >0.1 s after diffusing deeply into the bulk. When NaCl is added to the surfactant solution in a 20:1 Cl(-)/Br(-) ratio, the Cl2 reaction probability drops from 79% to 46 ± 1%, indicating that Cl(-) in the interfacial region only partially blocks reaction with Br(-). In parallel, we observe that gaseous Br2 molecules dissolve in 0.03 M THABr for 10(4) times longer than in 3 M NaBr. We attribute this change to formation of stabilizing interfacial and bulk-phase THA(+)Br3(-) ion pairs, in analogy with the capture of Cl2 and formation of THA(+)Cl2Br(-) pairs. The THA(+) ion appears to be a powerful interfacial catalyst for promoting reaction of Cl2 and Br2 with Br(-) and for ferrying the resultant ions into solution.

  19. Visibilidad e impacto de las revistas peruanas de Ciencias Sociales en acceso abierto

    Directory of Open Access Journals (Sweden)

    Luís Fernando Morales Morante

    2016-12-01

    Full Text Available En el presente artículo se analiza la producción científica y los principales indicadores de visibilidad internacional de 24 revistas peruanas de Ciencias Sociales indexadas en el Catálogo Latindex entre los años 2005-2014, disponibles en acceso abierto. Los resultados indican un mayor número de revistas del campo de la Psicología, Ade-Economía y Derecho, respecto del resto de áreas de conocimiento. Se observa un volumen importante de artículos publicados así como un predominio de artículos escritos por autores nacionales sobre los extranjeros. Se constata un claro dominio de las universidades privadas, respecto de las públicas en la tarea editorial de revistas científicas. Se proponen acciones e iniciativas de incentivo para mejorar el impacto, calidad, número de citas y la presencia en motores de búsqueda internacional.

  20. A comparative ab initio study of Br2*- and Br2 water clusters.

    Science.gov (United States)

    Pathak, A K; Mukherjee, T; Maity, D K

    2006-01-14

    The work presents ab initio results on structure and electronic properties of Br2*-.nH2O(n=1-10) and Br2.nH2O(n=1-8) hydrated clusters to study the effects of an excess electron on the microhydration of the halide dimer. A nonlocal density functional, namely, Becke's half-and-half hybrid exchange-correlation functional is found to perform well on the present systems with a split valence 6-31++G(d,p) basis function. Geometry optimizations for all the clusters are carried out with several initial guess structures and without imposing any symmetry restriction. Br2*-.nH2O clusters prefer to have symmetrical double hydrogen-bonding structures. Results on Br2.nH2O(n>or=2) cluster show that the O atom of one H2O is oriented towards one Br atom and the H atom of another H2O is directed to other Br atom making Br2 to exist as Br+-Br- entity in the cluster. The binding and solvation energies are calculated for the Br2*-.nH2O and Br2.nH2O clusters. Calculations of the vibrational frequencies show that the formation of Br2*- and Br2 water clusters induces significant shifts from the normal modes of isolated water. Excited-state calculations are carried out on Br2*-.nH2O clusters following configuration interaction with single electron excitation procedure and UV-VIS absorption profiles are simulated. There is an excellent agreement between the present theoretical UV-VIS spectra of Br2*-.10H2O cluster and the reported transient optical spectra for Br2*- in aqueous solution.

  1. Apresentação / Presentation

    Directory of Open Access Journals (Sweden)

    Maria Elias Soares

    2016-01-01

    Full Text Available Apresentação da Revista de Letras Vol. 1, número 27 de 2005 CONSELHO EDITORIAL DA REVISTA DE LETRAS ABUÊNDIA PADILHA PINTO Universidade Federal de Pernambuco abuendia@elogica.com.br CLÁUDIO LEITÃO FUNREI Universidade Federal de Minas Gerais claudio@prover.com.br ENEIDA LEAL CUNHA Universidade Federal da Bahia abralic@ufba.br JOÃO AZENHA JÚNIOR Universidade de São Paulo azenha@usp.br JOSÉ LUIZ FIORIN Universidade de São Paulo jolufi@uol.com.br LEONOR SCLIAR-CABRAL Universidade Federal de Santa Catarina lsc@th.com.br LUIZ ANTONIO MARCUSCHI Universidade Federal de Pernambuco lumarc@elogica.com.br MARIA DO SOCORRO SILVA DE ARAGÃO Universidade Federal do Ceará acaragao@terra.com.br MARIA HELENA MIRA MATEUS Universidade de Lisboa mhm@.ip.pt MARCIA ARBEX Universidade Federal de Minas Gerais marphi@larnet.com.br NADJA DA COSTA RIBEIRO MOREIRA Universidade Federal do Ceará nadja@ultranet.com.br PATRÍCIA ANNE VAUGHAN Universidade Federal do Ceará patricianne@uol.com.br ROLAND WALTER Universidade Federal de Pernambuco walter roland@hotmail.com.br

  2. P+C : Proyecto y Ciudad : revista de temas de arquitectura. Número 8

    OpenAIRE

    Laborda Yneva, José Eulalio

    2017-01-01

    Proyecto y Ciudad es una revista científica que publica artículos originales y difunde la intención programática y expresiva del Grupo de Investigación ‘Proyecto y Ciudad’, desde el Área de Proyectos Arquitectónicos de la Universidad Politécnica de Cartagena. La revista está dedicada a la investigación, análisis y crítica sobre temas relacionados con la Arquitectura, entendida ésta como un acto complejo y amplio que reúne pensamiento, reflexión, proyecto, expresión dibujada, aplicación constr...

  3. El diseño de revistas como lenguaje: fundamentos teóricos

    OpenAIRE

    Subiela Hernández, Blas José

    2010-01-01

    El objeto de estudio de la presente tesis es el diseño de revistas, una actividad incluida dentro del diseño periodístico, pero que, dentro de esta disciplina, ha recibido menos atención que el diseño de la prensa diaria. Partimos de la hipótesis de que el diseño en las revistas se puede considerar un lenguaje, con capacidad para transmitir sentido. Para confirmar nuestra hipótesis realizamos una investigación teórica y argumentativa que persigue tres objetivos: En primer lugar, defi...

  4. Spent fuel composition database system on WWW. SFCOMPO on WWW Ver.2

    International Nuclear Information System (INIS)

    Mochizuki, Hiroki; Suyama, Kenya; Nomura, Yasushi; Okuno, Hiroshi

    2001-08-01

    'SFCOMPO on WWW Ver.2' is an advanced version of 'SFCOMPO on WWW (Spent Fuel Composition Database System on WWW' released in 1997. This new version has a function of database management by an introduced relational database software 'PostgreSQL' and has various searching methods. All of the data required for the calculation of isotopic composition is available from the web site of this system. This report describes the outline of this system and the searching method using Internet. In addition, the isotopic composition data and the reactor data of the 14 LWRs (7 PWR and 7 BWR) registered in this system are described. (author)

  5. Enunciación, narratividad y valores en la revista Cosmopolitan

    Directory of Open Access Journals (Sweden)

    Aldo Merlino

    2010-04-01

    Full Text Available Las estrategias que se ponen en juego en torno a la definición y captación de un público específico y a la interacción, con la consecuente aceptación o rechazo de enunciados particulares, por parte de dichos públicos, signan la relación entre el medio y sus receptores. En este artículo analizamos la revista femenina Cosmopolitan (versión argentina para identificar las estrategias de enunciación y programas narrativos puestos en juego de forma recurrente, en relación a la construcción del receptor. Dicha construcción permite el desarrollo de un contrato de lectura, entre la revista y la figura de una lectora construida por aquella.

  6. Revista Medicina: Cien ediciones de la última etapa

    Directory of Open Access Journals (Sweden)

    Alfredo Jácome Roca

    2013-03-01

    Full Text Available Bajo la presidencia de César Augusto Pantoja y por iniciativa de José Francisco Socarrás, en 1978 se inició Medicina, publicación que vino a ocupar el lugar de la anterior Revista Médica como prolongación de ella. Inspirada en el estilo y diagramación de Medecine de Francia, fue del agrado del cuerpo médico nacional por su bella impresión y excelente contenido repartido en escritos de Medicina y Letras. Mario Camacho Pinto fue su editor durante muchos periodos y luego su Editor Emérito. Al igual que muchas otras revistas colombianas de salud, sufrió aulagas económicas y dificultades en el flujo de artículos publicables que trataban temas humanísticos y de reflexión, adicionados por otros de tipo científico. Por tres décadas, Medicina fue la divulgación del “tanque de pensamiento” que es la Academia, el máximo organismo médico nacional.

  7. Die Interhalogenkationen [Br2F5]+ und [Br3F8].

    Science.gov (United States)

    Ivlev, Sergei; Karttunen, Antti; Buchner, Magnus; Conrad, Matthias; Kraus, Florian

    2018-05-02

    Wir berichten über die Synthese und Charakterisierung der bislang einzigen Polyhalogenkationen, in denen verbrückende Fluoratome vorliegen. Das [Br2F5]+-Kation enthält eine symmetrische [F2Br-µ-F-BrF2]-Brücke, das [Br3F8]+-Kation enthält unsymmetrische µ-F-Brücken. Die Fluoronium-Ionen wurden in Form ihrer [SbF6]--Salze erhalten und Raman-, und 19F-NMR-spektroskopisch, sowie durch Röntgenbeugung am Einkristall untersucht. Quantenchemische Rechnungen, sowohl für die isolierten Kationen in der Gasphase, als auch für die Festkörper selbst, wurden durchgeführt. Populationsanalysen zeigen, dass die µ-F-Atome die am stärksten negativ partialgeladenen Atome der Kationen sind. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  8. Medio siglo de publicaciones botánicas en la Revista de Biología Tropical

    Directory of Open Access Journals (Sweden)

    Jorge León

    2002-12-01

    Full Text Available Over its first half century the Revista de Biología Tropical published many papers and supplements dealing with the botany. However, the Revista is not a primary botanical journal. A wide variety of topics and geographic sources have been included, taking into consideration species from the Neotropics, but also from India and Nigeria. A complete index of botanical papers is presented.

  9. Spent fuel composition database system on WWW. SFCOMPO on WWW Ver.2

    Energy Technology Data Exchange (ETDEWEB)

    Mochizuki, Hiroki [Japan Research Institute, Ltd., Tokyo (Japan); Suyama, Kenya; Nomura, Yasushi; Okuno, Hiroshi [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    2001-08-01

    'SFCOMPO on WWW Ver.2' is an advanced version of 'SFCOMPO on WWW' ('Spent Fuel Composition Database System on WWW') released in 1997. This new version has a function of database management by an introduced relational database software 'PostgreSQL' and has various searching methods. All of the data required for the calculation of isotopic composition is available from the web site of this system. This report describes the outline of this system and the searching method using Internet. In addition, the isotopic composition data and the reactor data of the 14 LWRs (7 PWR and 7 BWR) registered in this system are described. (author)

  10. Matrix isolation and computational study of isodifluorodibromomethane (F2CBr-Br): a route to Br2 formation in CF2Br2 photolysis.

    Science.gov (United States)

    George, Lisa; Kalume, Aimable; El-Khoury, Patrick Z; Tarnovsky, Alexander; Reid, Scott A

    2010-02-28

    The photolysis products of dibromodifluoromethane (CF(2)Br(2)) were characterized by matrix isolation infrared and UV/Visible spectroscopy, supported by ab initio calculations. Photolysis at wavelengths of 240 and 266 nm of CF(2)Br(2):Ar samples (approximately 1:5000) held at approximately 5 K yielded iso-CF(2)Br(2) (F(2)CBrBr), a weakly bound isomer of CF(2)Br(2), which is characterized here for the first time. The observed infrared and UV/Visible absorptions of iso-CF(2)Br(2) are in excellent agreement with computational predictions at the B3LYP/aug-cc-pVTZ level. Single point energy calculations at the CCSD(T)/aug-cc-pVDZ level on the B3LYP optimized geometries suggest that the isoform is a minimum on the CF(2)Br(2) potential energy surface, lying some 55 kcal/mol above the CF(2)Br(2) ground state. The energies of various stationary points on the CF(2)Br(2) potential energy surface were characterized computationally; taken with our experimental results, these show that iso-CF(2)Br(2) is an intermediate in the Br+CF(2)Br-->CF(2)+Br(2) reaction. The photochemistry of the isoform was also investigated; excitation into the intense 359 nm absorption band resulted in isomerization to CF(2)Br(2). Our results are discussed in view of the rich literature on the gas-phase photochemistry of CF(2)Br(2), particularly with respect to the existence of a roaming atom pathway leading to molecular products.

  11. Arte Joven: 1901, una revista modernista

    OpenAIRE

    Flores Arroyuelo, Francisco José

    2002-01-01

    La revista Arte Joven, publicada en 1901, fue exponente del primer movimiento modernista y de sus afanes renovadores en el campo de las artes y de la literatura que se desarrollaron en España en el cambio del siglo XIX al siglo XX. Participaron en ella escritores y artistas de diversa forma de pensar y con distintas intenciones estéticas, desde Picasso a Unamuno, pero con una intención común de superar los esquemas establecidos por la estética realista anterior.

  12. 25 anos da revista Psicologia USP

    OpenAIRE

    Ramozzi-Chiarottino, Zelia

    2016-01-01

    Resumo Este pequeno artigo narra a fundação da revista Psicologia USP em 1990 e sua origem, inspirada no Jornal Brasileiro de Psicologia. Faz também, singela homenagem ao seu idealizador Professor Norberto de Abreu e Silva Neto. Abstract This short article is on the establishement of the Psicologia USP journal and its origins, which was inspired by the journal Jornal Brasileiro de Psicologia. It also renders a tribute to Doctor Norberto de Abreu e Silva Neto, the creator of the journal. ...

  13. Revista Somos y la militancia homosexual en los '70

    Directory of Open Access Journals (Sweden)

    Gastón Klocker

    2018-01-01

    Full Text Available Dentro del contexto de turbulencias políticas, sociales y culturales que caracterizaron a las décadas de 1960 y 1970 a nivel mundial, continental, y más específicamente, en Argentina; surge la revista Somos, órgano de prensa y difusión del Frente de Liberación Homosexual (FLH. Este acercamiento investigativo buscará reseñar la publicación con el objetivo de establecerla como visor central de aspectos que rodearon al FLH. Para eso partiremos de una revisión histórica de antecedentes, documentos y manifiestos, vertientes ideológicas, estructura organizacional y su diálogo con Organizaciones Armadas y células de la Triple A alineadas al Nacionalismo Católico en la voz de la revista El Caudillo. El corpus a trabajar es una plataforma periodística de ocho ediciones bimensuales que van de diciembre de 1973 a enero de 1976.

  14. LA OBLIGACIÓN DE INDEXAR LAS REVISTAS CIENTÍFICAS: UN RETO EDITORIAL

    Directory of Open Access Journals (Sweden)

    Salim Mattár

    2007-08-01

    Full Text Available Hace algo más de año y medio informamos con orgullo que nuestraRevista MVZ Córdoba estaba indexada por el Índice Latinoamericanode Revistas Científicas y Tecnológicas – LATINDEX y por el ÍndiceNacional de Publicaciones Seriadas y Tecnológicas Colombianas –PUBLINDEX. Igualmente, relacionamos varias bases de datos e índicesa los cuales en ese momento solicitamos la aceptación de la revista.También expusimos los criterios de nuestra política editorial, orientada al mejoramiento permanente de la calidad editorial y científica de las publicaciones y no menos importante, aumentar por todos los medios posibles la visibilidad de nuestra publicación.Pues bien, hoy tenemos el gusto de informarle a la comunidad académica y científica que hemos sido aceptados en la mayoría dedichas bases de datos e índices solicitados: Scielo Colombia(Scientific Electronic Library Oline, Cab Abstract, Ulrich’sPeriodical Directory, Acuatic Sciences and Fisheries Abstracts(ASFA, Imbiomed, Free Medical Journals, Directory of OpenAcces Journals (DOAJ, Red de revistas científicas de AméricaLatina y el Caribe, España y Portugal (REDALYC y ThompsonGale. Actualmente, esperamos nuevas aceptaciones queoportunamente estaremos informando.Queremos agradecer a todos los colaboradores tanto nacionales einternacionales que han creído en nuestra publicación enviando susmanuscritos, ya que sin ellos no habría sido posible avanzar hacia lameta y los compromisos establecidos por el Comité Editorial.Igualmente a COLCIENCIAS que ha trazado una política de asesoría ycapacitación continuada en este oficio de editar, que sólo se aprendecon el ensayo y el error y no en un claustro universitario, lo cual si existiera, probablemente contribuiría con la profesionalización de tan honroso oficio.Con estos avances, entregamos una revista con claras políticas desuperación y de mejoramiento de la calidad de los estándaresinternacionales que beneficia la divulgaci

  15. Core electron binding energy shifts of AlBr3 and Al2Br6 vapor

    International Nuclear Information System (INIS)

    Mueller, Astrid M.; Plenge, Juergen; Leone, Stephen R.; Canton, Sophie E.; Rude, Bruce S.; Bozek, John D.

    2006-01-01

    The Al 2p and Br 3d inner-shell photoelectron spectra of aluminum tribromide monomer and dimer vapor were measured at 90 and 95 eV photon energy, respectively, to determine the core electron binding energies of the atoms in the two molecular species. While AlBr 3 has three identical Br atoms, Al 2 Br 6 exhibits four terminal and two bridging Br atoms. The species are identified by their distinct valence photoelectron spectra. Comparison of the observed Al 2p 1/2 and Al 2p 3/2 electron binding energies of AlBr 3 with those of Al 2 Br 6 shows that there is a chemical shift of (0.15 ± 0.03) eV to lower energy in the dimer. In Al 2 Br 6 , an assignment is proposed in which the Br 3d 3/2 and Br 3d 5/2 binding energies of terminal Br atoms are (1.18 ± 0.03) eV lower than those of bridging Br atoms. This assignment assumes that both types of Br atoms have similar cross-sections for ionization. With this result, the Br 3d 3/2 and Br 3d 5/2 binding energies of Br atoms in AlBr 3 are (0.81 ± 0.03) eV lower than those of bridging Br atoms of the dimer but (0.37 ± 0.03) eV higher than those of terminal Br atoms of the dimer. The obtained chemical shifts are considered in terms of the binding relations and electron density distributions in both molecules. Chemical shifts that are larger than a few hundred millielectron volts, as observed in the Al 2 Br 6 /AlBr 3 system, offer potential to study the dissociation dynamics of the dimer in a femtosecond visible or ultraviolet-pump/XUV-probe experiment

  16. Matrix isolation and computational study of isodifluorodibromomethane (F2CBr-Br): A route to Br2 formation in CF2Br2 photolysis

    International Nuclear Information System (INIS)

    George, Lisa; Kalume, Aimable; Reid, Scott A.; El-Khoury, Patrick Z.; Tarnovsky, Alexander

    2010-01-01

    The photolysis products of dibromodifluoromethane (CF 2 Br 2 ) were characterized by matrix isolation infrared and UV/Visible spectroscopy, supported by ab initio calculations. Photolysis at wavelengths of 240 and 266 nm of CF 2 Br 2 :Ar samples (∼1:5000) held at ∼5 K yielded iso-CF 2 Br 2 (F 2 CBrBr), a weakly bound isomer of CF 2 Br 2 , which is characterized here for the first time. The observed infrared and UV/Visible absorptions of iso-CF 2 Br 2 are in excellent agreement with computational predictions at the B3LYP/aug-cc-pVTZ level. Single point energy calculations at the CCSD(T)/aug-cc-pVDZ level on the B3LYP optimized geometries suggest that the isoform is a minimum on the CF 2 Br 2 potential energy surface, lying some 55 kcal/mol above the CF 2 Br 2 ground state. The energies of various stationary points on the CF 2 Br 2 potential energy surface were characterized computationally; taken with our experimental results, these show that iso-CF 2 Br 2 is an intermediate in the Br+CF 2 Br→CF 2 +Br 2 reaction. The photochemistry of the isoform was also investigated; excitation into the intense 359 nm absorption band resulted in isomerization to CF 2 Br 2 . Our results are discussed in view of the rich literature on the gas-phase photochemistry of CF 2 Br 2 , particularly with respect to the existence of a roaming atom pathway leading to molecular products.

  17. Computer simulation of the structure of liquid metal halides RbBr, CuCl, CuBr, CuI, and AgBr

    International Nuclear Information System (INIS)

    Belashchenko, D.K.; Ostrovskij, O.I.

    2003-01-01

    The computerized models of the RbBr, AgBr, CuCl, CuBr and CuI liquid ion systems of 498 ions dimension are simulated at the temperatures of 753-960 K on the basis of the known diffraction data through the BELION algorithm. Good agreement of diffraction and model partial pair correlation functions (PPCF), excluding the PPCF first peaks heights, is obtained in all the cases. The simulation is carried out by the varied ion charges (the atomization energy values, close to the real ones, are obtained by ion charges ±1.00 for the RbBr, ±1.15 for AgBr, ±1.20 for CuCl, ±1.48 for CuBr and ±1.367 for CuI). The noncoulomb contributions in the interparticle potentials are calculated [ru

  18. Rate constant for the reaction SO + BrO yields SO2 + Br

    Science.gov (United States)

    Brunning, J.; Stief, L.

    1986-01-01

    The rate of the radical-radical reaction SO + BrO yields SO2 + Br has been determined at 298 K in a discharge flow system near 1 torr pressure with detection of SO and BrO via collision-free sampling mass spectrometry. The rate constant was determined using two different methods: measuring the decay of SO radicals in the presence of an excess of BrO and measuring the decay of BrO radicals in excess SO. The results from the two methods are in reasonable agreement and the simple mean of the two values gives the recommended rate constant at 298 K, k = (5.7 + or - 2.0) x 10 to the -11th cu cm/s. This represents the first determination of this rate constant and it is consistent with a previously derived lower limit based on SO2 formation. Comparison is made with other radical-radical reactions involving SO or BrO. The reaction SO + BrO yields SO2 + Br is of interest for models of the upper atmosphere of the earth and provides a potential coupling between atmospheric sulfur and bromine chemistry.

  19. Dye adsorbates BrPDI, BrGly, and BrAsp on anatase TiO2(001) for dye-sensitized solar cell applications

    Science.gov (United States)

    Çakır, D.; Gülseren, O.; Mete, E.; Ellialtıoǧlu, Ş.

    2009-07-01

    Using the first-principles plane-wave pseudopotential method within density functional theory, we systematically investigated the interaction of perylenediimide (PDI)-based dye compounds (BrPDI, BrGly, and BrAsp) with both unreconstructed (UR) and reconstructed (RC) anatase TiO2(001) surfaces. All dye molecules form strong chemical bonds with surface in the most favorable adsorption structures. In UR-BrGly, RC-BrGly, and RC-BrAsp cases, we have observed that highest occupied molecular orbital and lowest unoccupied molecular orbital levels of molecules appear within band gap and conduction-band region, respectively. Moreover, we have obtained a gap narrowing upon adsorption of BrPDI on the RC surface. Because of the reduction in effective band gap of surface-dye system and possibly achieving the visible-light activity, these results are valuable for photovoltaic and photocatalytic applications. We have also considered the effects of hydration of surface to the binding of BrPDI. It has been found that the binding energy drops significantly for the completely hydrated surfaces.

  20. La pregunta por resolver: Revistas científicas impresas o electrónicas

    Directory of Open Access Journals (Sweden)

    Salim Máttar V. Ph.D.

    2009-12-01

    Full Text Available La edición de revistas electrónicas forma parte hoy día de lo que algunos autores han denominado la revolución digital, que no es más que el advenimiento de innumerables soportes electrónicos en el campo de la edición (1. Esta corriente no es un capricho, sino que cada día deberemos estar dispuestos a reconocer y a aceptar que este mundo real de la electrónica ha producido una modificación absoluta en la creación, producción, difusión, distribución, reproducción, uso y consumo de los contenidos de las revistas por sus usuarios o suscriptores. Al referirnos a las revistas científicas y teniendo en cuenta la vasta producción de conocimiento científico, así como la velocidad con que este se produce en el mundo, la opción de la publicación electrónica se constituye como el medio idóneo para su divulgación mundial.

  1. História da Revista de Enfermagem da Universidade Federal de Santa Maria

    Directory of Open Access Journals (Sweden)

    Maria de Lourdes Denardin Budó

    Full Text Available RESUMO Objetivo Relatar a história da Revista de Enfermagem da Universidade Federal de Santa Maria. Método Relato de experiência, a partir de informações de materiais secundários, como site e documentos. As informações foram agrupadas e apresentadas conforme a sequência temporal. Resultados A revista foi criada em 2010 e, nestes seis anos, houve um aumento no número de artigos publicados de 58 para 75, a aprovação para indexação em bases de dados e a obtenção do Qualis B3. Foram desenvolvidas ações direcionadas ao fortalecimento do periódico, como a busca de recursos financeiros, aumento da divulgação, do número de pareceristas e colaboradores. Conclusões A história da revista envolve diversas etapas as quais têm sido permeadas por desafios e conquistas que implicam a busca pelo fortalecimento contínuo do periódico e das publicações vinculadas.

  2. Cinco puntos sobre la revista Barcelona

    OpenAIRE

    Bertone Crippa, Mauro

    2012-01-01

    El humor, como género y narrativa mediática, ocupa un lugar destacado al interior del campo del periodismo gráfico argentino. Como emergente contemporáneo dentro de este ámbito, la revista Barcelona se vuelve un objeto de estudio sugestivo al trabajar, a partir del registro del humor, sobre la agenda y la enunciación de los medios gráficos de actualidad. De esta manera, se analizan las condiciones de producción del discurso de Barcelona para ver qué novedades aporta al campo del hu...

  3. Photodissociation of C3H5Br and C4H7Br at 234 nm

    International Nuclear Information System (INIS)

    Kim, Hyun Kook; Paul, Dababrata; Hong, Ki Ryong; Cho, Ha Na; Kim, Tae Kyu; Lee, Kyoung Seok

    2012-01-01

    The photodissociation dynamics of cyclopropyl bromide (C-3H 5 Br) and cyclobutyl bromide (C 4 H 7 Br) at 234 nm was investigated. A two-dimensional photofragment ion-imaging technique coupled with a [2+1] resonance enhanced multiphoton ionization scheme was utilized to obtain speed and angular distributions of the nascent Br( 2 P 3/2 ) and Br*( 2 P 1/2 ) atoms. The recoil anisotropies for the Br and Br* channels were measured to be βBr = 0.92 ± 0.03 and βBr* = 1.52 ± 0.04 for C 3 H 5 Br and βBr = 1.10 ± 0.03 and βBr* = 1.49 ± 0.05 for C 4 H 7 Br. The relative quantum yield for Br was found to be ΦBr = 0.13 ± 0.03 and for C 3 H 5 Br and C 4 H 7 Br, respectively. The soft radical limit of the impulsive model adequately modeled the related energy partitioning. The nonadiabatic transition probability from the 3A' and 4A' potential energy surfaces was estimated and discussed

  4. Is the 'Bromine Explosion' generated from the reaction BrO HO2 alone?

    Science.gov (United States)

    Behnke, Wolfgang; Zetzsch, Cornelius

    2010-05-01

    We observed bromine explosions (a fast production of atomic Br and Cl under tropospheric conditions) in various smog chamber experiments in Teflon bags at room temperature at a relative humidity of about 80% in the presence of NaCl/NaBr-aerosol, simulated sunlight and ozone (200 - 400 ppb). Time profiles of ozone and hydrocarbons (HCs: n-butane, 2,2-dimethylbutane, tetramethylbutane and toluene, initially about 2 ppb each) were monitored to determine concentrations and source strengths of OH radicals, atomic Cl and Br and the corresponding time profiles of BrCl and Br2 as their photolytic precursors. The number and size of aerosols are measured as well as their chemical composition (Br-, Cl- and oxalic acid). Full records of raw data from the smog chamber runs are available at www.eurochamp.org for potential users. Chemical box model calculations deliver concentrations of various intermediates, such as aldehydes, HO2 and RO2 radicals and the inorganic halogen compounds ClO, BrO, HOCl and HOBr, where HOBr from O3 + Br- => BrO- + O2 in the aqueous/adsorbed phase induces the following gas-phase/ heterogeneous chain reaction Br + O3 => BrO + O2(1) BrO + HO2 => HOBr + O2(2a) HOBr + (Aerosol) => HOBrad(3) Surface-adsorbed HOBr reacts with Br- or Cl- to produce Br2 or BrCl, both of which are released and photolysed. Formation of Br2 should prevail up to Cl-/Br- -ratios of about 104 (Fickert, S., J.W. Adams, J.N. Crowley, J. Geophys. Res., D104, 23719-23727, 1999). A maximum of this ratio is reached about 30 minutes after the beginning and decreases during the next hours - probably by reaction of Br2 with oxalate and absorption of HBr, formed from the reaction of Br with aldehydes. Parallel to chain reaction (1)-(3) a chain reaction replacing Br by Cl seems possible but can not be realized, since the main sink of atomic Cl is its reaction with hydrocarbons - leading to chain termination - in contrast to atomic Br (ratio of rates: kCl[O3]/kCl[HC] ~ 0.1; kBr[O3]/kBr

  5. La revista Demófilo y la antropología cultural en Andalucía

    Directory of Open Access Journals (Sweden)

    Rodríguez Becerra, Salvador

    2002-06-01

    Full Text Available Published since 1987 by the Machado Foundation, of Seville, Demófilo represents the resumption of scientific folklore studies in the late 19th century championed by Antonio Machado y Álvarez and published in the journal El Folk-lore Andaluz. The basic objectives of Demófilo are «to rescue, analyze and divulge Andalousia's traditional culture.» The journal is oriented toward high schools, colleges and universities in Andalousia as well as any institution interested in the traditional culture of the area, such as museums and organizations supporting Andalousia's cultural heritage. The authors also include in this article a summary of the journal's monographic issues published to date.<br>>Publicación de la Fundación Machado, de Sevilla, y nacida en 1987, Demófilo enlaza con su predecesora en el siglo XIX, El Folk-lore Andaluz, del movimiento sevillano de estudio científico del folklore que animara sobre todo Antonio Machado y Álvarez. Demófilo tiene como objetivos básicos «rescatar, analizar y difundir la cultura tradicional andaluza» y va dirigida especialmente a centros de enseñanza media y universidades de Andalucía, así como a instituciones interesadas en la cultura tradicional de la región, como museos y asociaciones de defensa del patrimonio cultural. Los autores incluyen también en este artículo un resumen de los números monográficos de la revista publicados hasta la fecha.

  6. http://www.revista-apunts.com/es/hemeroteca?article=1435

    Directory of Open Access Journals (Sweden)

    Daniel Lapresa Ajamil

    2010-09-01

    Full Text Available El propósito último de nuestro trabajo se centra en la adaptación del deporte al niño. En concreto, el presente artículo trata de arrojar luz sobre como ha de ser la introducción del niño en la competición, en la iniciación al fútbol. En el seno de la metodología observacional, utilizando estadística descriptiva –como marco general– y la detección de patrones temporales –como ejemplificación concreta–, se compara el desempeño técnico-táctico del prebenjamín en la modalidad vigente –el fútbol 5–, con el desarrollado en la propuesta alternativa de fútbol 3. El artículo, a partir del estudio de la utilización del espacio de juego y del desempeño de habilidades técnicas, concluye que la propuesta alternativa de fútbol 3 resulta más acorde con las posibilidades reales del prebenjamín.

  7. A la revista Verba Hispanica en su décimo aniversario

    Directory of Open Access Journals (Sweden)

    Neva Šlibar

    2002-12-01

    Full Text Available  Es un honor para mí felicitar como decana de la Facultad de Filosofía y Letras de la Universidad de Ljubljana ala revista Verba Hispanica, justo cuando sale a la luz su décimo número, y cuando las Cátedras de Lengua y Literatura Españolas cumplen veinte años de funcionarniento.  La revista se publicó por primera vez en 1991, a los diez años de haberse creado la Sección de Hispánicas en el Departamento  de Lenguas y Literaturas Romances de nuestra Facultad; parecía un reto osado entonces,  pero el número de contribuciones recibidas en estos diez años demuestra que fue una decisión acertada. En los últimos años, ha crecido el número de artículos de hispanistas eslovenos, lo que sin duda prueba la enorme fortaleza de los estudios de las lenguas y literaturas iberorromances  en nuestro pafs. La pub1icación de tesis doctorales  y tesinas,  así como de algunos  de los mejores trabajos de graduación, demuestra que la pujanza de la Secci6n de Hispánicas y el crecimiento de la revista van a la par.

  8. A la revista Verba Hispanica en su décimo aniversario

    Directory of Open Access Journals (Sweden)

    Neva Šlibar

    2002-12-01

    Full Text Available Es un honor para mí felicitar como decana de la Facultad de Filosofía y Letras de la Universidad de Ljubljana ala revista Verba Hispanica, justo cuando sale a la luz su décimo número, y cuando las Cátedras de Lengua y Literatura Españolas cumplen veinte años de funcionarniento.  La revista se publicó por primera vez en 1991, a los diez años de haberse creado la Sección de Hispánicas en el Departamento  de Lenguas y Literaturas Romances de nuestra Facultad; parecía un reto osado entonces,  pero el número de contribuciones recibidas en estos diez años demuestra que fue una decisión acertada. En los últimos años, ha crecido el número de artículos de hispanistas eslovenos, lo que sin duda prueba la enorme fortaleza de los estudios de las lenguas y literaturas iberorromances  en nuestro pafs. La pub1icación de tesis doctorales  y tesinas,  así como de algunos  de los mejores trabajos de graduación, demuestra que la pujanza de la Secci6n de Hispánicas y el crecimiento de la revista van a la par.

  9. Influencia de las revistas de impacto en el periodismo científico y en la ciencia actual

    Directory of Open Access Journals (Sweden)

    CARLOS ELÍAS

    2002-01-01

    Full Text Available En este estudio se ha intentado detectar la influencia de las revistas de impacto, en las que mayoritariamente publican los científicos, en el periodismo especializado y en la ciencia actual. He analizado, sobre todo, el caso español, pero considero que sus conclusiones pueden extenderse al resto de los países. Al margen de que se demuestra la absoluta preponderancia de revistas como Nature y Science (el 45% de la información sobre ciencia de científicos extranjeros que publican los diarios generalistas procede de estas revistas, también se analizan las influencias de la estrategia de comunicación mediática de los gabinetes de prensa de estas publicaciones en la ciencia. Se ha estudiado, especialmente, la preponderancia del idioma inglés y la escasa relevancia del español, así como las consecuencias futuras que tendrá el cada vez mayor impacto de unas pocas revistas en la modificación del método científico en las ciencias experimentales.

  10. Revista Brasileira de História da Medicina, pioneira da historiografia médica Revista Brasileira de História da Medicina, a pioneer in medical historiography

    Directory of Open Access Journals (Sweden)

    Amanda Mendonça

    2007-03-01

    Full Text Available Apresenta as características gerais da Revista Brasileira de História da Medicina, que fez aflorar o campo da história da medicina no Brasil ao estimular a produção bibliográfica nessa área. A análise tem por propósito contribuir para ampliar a pesquisa em história da medicina e da ciência. A partir da descrição dos aspectos editoriais do periódico, pode-se ter uma idéia de como se organizava aquele campo entre os anos 1940 e 1960. A revista permite, ainda, mapear os congressos que visavam o intercâmbio entre médicos historiadores brasileiros e estrangeiros.I(It?This? presents the general characteristics of the Revista Brasileira de História da Medicina, which contributed for the emergence of the field of medicine history in Brazil by inciting bibliographic production on the subject. The purpose of our analysis is to foster research on the history of medicine and of the sciences. From the description of the editorial aspects of the journal one can have an idea of how the research field was organized between 1940 and 1960. The periodical also allows for an overview of the exchange occurring between Brazilian and foreign historian physicians at that time.

  11. Dianostic and treatment of hemangisarcoma in a female dog’s ovary - Case report

    Directory of Open Access Journals (Sweden)

    Luciano Schneider da Silva

    2015-06-01

    Full Text Available ABSTRACT. da Silva L.S., Santin A.P.I., da Silva J.A., de Freitas S.L.R. & da Silva L.A.F. [Dianostic and treatment of hemangisarcoma in a female dog’s ovary - Case report.] Diagnóstico e tratamento de hemangiossarcoma em ovário de cadela - Relato de caso. Revista Brasileira de Medicina Veterinária, 37(2:123-126, 2015. Patologia Clínica Cirúrgica, Hospital Veterinário, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Campus II Samambaia, Caixa Postal 131, Goiânia, GO 74001-970, Brasil. E-mail: lafranco@vet.ufg.br Increase in life expectation in dogs can be attributed to therapeutics advances in Veterinary Medicine. Despite the benefits, longevity makes these animals more susceptible to a variety of diseases like cancer. This paper reports a hemangiosarcoma, weighting 6,5Kg, on the ovary of a Pit Bull, nine years old, female dog, emphasizing diagnostics and treatment. Surgical intervention and post-operative care were performed immediately after complementary exams results were evaluated. The animal was observed during 12 months after surgery in order to evaluate the clinical conditions and the possibility of recurrence. Surgical treatment was important to assist the diagnosis. Recurrence was not observed during the evaluation period. Also, surgical treatment associated with chemotherapy was not necessary.

  12. Angular correlation for gamma-gamma transitions in 81Br and 83Br nuclei

    International Nuclear Information System (INIS)

    Matheus, R.

    1984-01-01

    The directional angular correlation of coincident gamma transitions in 81 Br and 83 Br have been measured following the β - decay of 81 Se(T sub(1/2) = 18.6 min) and 83 Se(T sub(1/2) = 22.6 min) respectively, using Ge(Li) - high purity Ge and Ge(Li)-NaI(Tl) spectrometers. The radioactive sources were prepared by irradiating with neutrons in the IEA-R1 reactor, metallic selenium (natural) to produce 81 Se and samples of metallic selenium enriched (to approx. 90% in 82 Se) to produce 83 Se. Measurements have been carried out for the gamma cascades 260-276 KeV, 290-276 KeV and 552-276 KeV in 81 Br and the gamma cascades 225(510)-356 KeV, 510-356 KeV, 572-(510)-356 KeV, 718-(225)-(510)-356 KeV, 1064-356 KeV, 718-225 KeV, 718-(225)-510 KeV, 836-718 KeV, 718-(225)-866 KeV, 883-718 KeV and 1895-799 KeV in 83 Br. The multipole mixing ratios, σ(E2/M1), were determined for 3 gamma transitions in 81 Br and 11 gamma transitions in 83 Br. In the case of 81 Br present results confirmed some of the earlier results. The spin and parity assignment were made to the majority of levels in 81 Br and 83 Br involved in the present study, some of them confirming the earlier results. A comparison of some of the nuclear properties of the 79 Br, 81 Br and 83 Br is made based on the available experimental data. The experimental results are also discussed qualitatively in terms of some nuclear models applicable for the description of the properties of odd-A bromine isotopes. (Author) [pt

  13. $^{80}$Br $^{80}$Br-a new electron-gamma PAC probe

    CERN Document Server

    Correia, J G; Araújo, J P; Marques, J G; Soares, J C; Melo, A A

    2001-01-01

    Conversion electron-gamma PAC measurements of the 49-37 keV cascade in /sup 80/Br through the intermediate 2/sup -/ state with T/sub 1/2 /=7.4 ns were performed with a system of two magnetic lens spectrometers and two BaF/sub 2/ scintillation detectors. The parent /sup 80m/Br activity with a halflife of 4.4 hrs was implanted into Ni, Zn and graphite at the ISOLDE separator at CERN. The observed interaction frequency in the nickel matrix is in good agreement with the known value of the hyperfine field for Br in Ni and the magnetic moment of the 2/sup -/ state. From the measured quadrupole interaction in Zn and graphite the electric field gradients at Br were obtained. (7 refs).

  14. Preparation of 80Br or 82Br-biomolecules via excitation labelling methods

    International Nuclear Information System (INIS)

    Wong, S.; Ache, H.J.

    1975-01-01

    The direct decay-induced 82 Br (or 80 Br) labelling by exposing the solid substrate molecules, such as deoxyuridine, L-tyrosine, guanosine, deoxycytidine, phenylalanine, and acetic acid, to gaseous CF 3 82 /sup m/Br (or CF 3 80 /sup m/Br) was studied. The radiochemical yields of the brominated products are relatively small and range from 1 percent in the case of bromo deoxyuridine to 11 percent for bromoacetic acid. The modification of this technique by adding Cl 2 gas to the reaction mixture improves the yields in several cases drastically (up to 80 percent for bromo-guanosine and bromo-L-tyrosine). Similar improvement can be achieved by exposing crystalline KBrO 3 for some time to CF 3 82 /sup m/Br (or CF 3 80 /sup m/Br) and dissolving subsequently the KBrO 3 in an acidic solution of the substrate. (auth)

  15. Estudio bibliométrico de la Revista CorSalud

    Directory of Open Access Journals (Sweden)

    Grenedys Teresa López Tápanes

    2013-10-01

    Full Text Available Objetivos: Se hizo un estudio bibliométrico de algunos indicadores en los primeros 199 artículos publicados en CorSalud, con el objetivo de conocer el estado actual y la evolución de sus contenidos. Método: Se realizó de un estudio descriptivo y transversal de forma retrospectiva, analizando los artículos publicados en la Revista CorSalud entre el primer trimestre del año 2009 y el primer trimestre del año 2013 ambos inclusive, por origen de procedencia del primer autor, tema de publicación, composición y actualización de las fuentes de referencia y número de autores firmantes. Resultados: Se analizaron un total de 199 artículos, el 73,36% de los mismos provenían de Villa Clara, la Cardiología predominó con un 50,25% de la temática, las fuentes de referencias más utilizadas fueron las revistas impresas 79,96% y la actualización de las mismas tuvo una tendencia decreciente anual del 7,78% aunque se mantuvo con una media del 47,05% y el Índice de Colaboración entre los autores alcanzó una media de 3,75%. Conclusiones: La mayoría de los artículos provenían la región central, los artículos originales, breves, de revisión y especiales fueron la generalidad. Preponderaron los temas de Cardiología, las fuentes de referencias utilizadas mayormente fueron las revistas impresas, la actualización de las mismas se mantiene en niveles comparables internacionalmente, al igual del Índice de Colaboración entre los autores que mostró además, una tendencia creciente.

  16. Cultura em Comentário: uma revista de cultura e resistência (1960 - 1973)

    OpenAIRE

    Taciana Wiazovski

    2011-01-01

    Este estudo reconstitui a trajetória e a contribuição intelectual de Comentário (1960-1973), revista financiada pelo American Jewish Committee (AJC) que seguiu o modelo da americana Commentary criada quinze anos antes. A publicação reuniu proeminentes nomes da cultura nacional e internacional da década de 1960. Procuramos pelas origens da revista nos Estados Unidos por meio de sua relação com a empreitada cultural norte-americana durante a Guerra Fria, considerando que tal publicação se dizia...

  17. Visible Light Driven Nanosecond Bromide Oxidation by a Ru Complex with Subsequent Br-Br Bond Formation.

    Science.gov (United States)

    Li, Guocan; Ward, William M; Meyer, Gerald J

    2015-07-08

    Visible light excitation of [Ru(deeb)(bpz)2](2+) (deeb = 4,4'-diethylester-2,2'-bipyridine; bpz = 2,2'-bipyrazine), in Br(-) acetone solutions, led to the formation of Br-Br bonds in the form of dibromide, Br2(•-). This light reactivity stores ∼1.65 eV of free energy for milliseconds. Combined (1)H NMR, UV-vis and photoluminescence measurements revealed two distinct mechanisms. The first involves diffusional quenching of the excited state by Br(-) with a rate constant of (8.1 ± 0.1) × 10(10) M(-1) s(-1). At high Br(-) concentrations, an inner-sphere pathway is dominant that involves the association of Br(-), most likely with the 3,3'-H atoms of a bpz ligand, before electron transfer from Br(-) to the excited state, ket = (2.5 ± 0.3) × 10(7) s(-1). In both mechanisms, the direct photoproduct Br(•) subsequently reacts with Br(-) to yield dibromide, Br(•) + Br(-) → Br2(•-). Under pseudo-first-order conditions, this occurs with a rate constant of (1.1 ± 0.4) × 10(10) M(-1) s(-1) that was, within experimental error, the same as that measured when Br(•) were generated with ultraviolet light. Application of Marcus theory to the sensitized reaction provided an estimate of the Br(•) formal reduction potential E(Br(•)/Br(-)) = 1.22 V vs SCE in acetone, which is about 460 mV less positive than the accepted value in H2O. The results demonstrate that Br(-) oxidation by molecular excited states can be rapid and useful for solar energy conversion.

  18. Para tener entre manos una revista

    OpenAIRE

    Gabriel Giannone

    2017-01-01

    Consideramos importante rescatar el trabajo colectivo y acumulado que precede y sucede a la labor de intermediación académica que realiza una revista. Para ello recordamos una clásica frase prologal: el texto que usted tiene en sus manos. Con cierta ironía, porque quizás muy pocos de los lectores puedan tener entre manos y oler el papel impreso de Chasqui. Desde sus pantallas, sus tablets o sus teléfonos la intención es que se comprenda este número como un solo cuerpo. Y al mismo tiempo, como...

  19. RESONANCE CARS IN BR2 MOLECULES AND BR-ATOMS

    NARCIS (Netherlands)

    Aben, I.; Levelt, P.; Ubachs, W.M.G.; Hogervorst, W.

    1991-01-01

    Resonance-enhanced CARS processes were studied in molecular bromine. On the basis of the known spectroscopic constants of the two electronic states involved, the features in the spectra could be identified. CARS signals from Br-atoms produced from dissociation of Br2 were obtained by tuning (omega-1

  20. Revista Annaes de Enfermagem: publicações de enfermeiras sobre pediatria (1932-1941 Revista Annaes de Enfermagem: publicaciones de enfermeras sobre pediatria (1932-1941 Revista Annaes de Enfermagem: nurses' publications about pediatrics (1932-1941

    Directory of Open Access Journals (Sweden)

    Aline Silva Fontes

    2009-02-01

    Full Text Available Estudo histórico-social que tem como objeto a produção intelectual de enfermeiras e estudantes de enfermagem relativas à enfermagem pediátrica na revista Annaes de Enfermagem, no período entre 1932-1941. A fonte primária refere-se aos números da revista Annaes de Enfermagem pertencentes ao recorte temporal do estudo, além de relatórios e correspondências. As fontes secundárias estão constituídas de livros, artigos, dissertações e teses relativas à história do Brasil e da enfermagem. A análise dos dados teve o apoio das fontes secundárias e do pensamento do sociólogo francês Pierre Bourdieu. Os resultados evidenciam que a revista Annaes de Enfermagem publicou e divulgou temas importantes sobre a assistência de enfermagem à criança e contribuiu para a visibilidade da enfermeira brasileira junto à comunidade científica.Estudio de naturaleza historico-social que tiene como objeto la producción intelectual de las enfermeras y estudiantes de enfermería relativos a la enfermería pediátrica en el periodico Annaes de Enfermagem, en el período 1932-1941. Las fuentes primarias se refieren a los números de la Revista Annaes de Enfermagem pertenecientes al recorte temporal del estudio, además de los informes y correspondencia. Las fuentes secundarias están compuestas de libros, artículos, tesis y disertaciones sobre la historia de la enfermería de Brasil. El análisis de datos cuenta con el apoyo de fuentes secundarias y el pensamiento del sociólogo francés Pierre Bourdieu. Los resultados muestran que el periodico Annaes de Enfermería publicó sobre las importantes cuestiones de la asistencia de enfermería para el niño y ha contribuydo con la visibilidad de la enfermera brasileña en la comunidad científica.Historic-social study whose object was the intellectual production of nurses and students about pediatric nursing in the journal Annaes de Enfermagem, in the period 1932-1941. The primary source refers to the

  1. WWW chart of the nuclides

    International Nuclear Information System (INIS)

    Huang Xiaolong; Zhou Chunmei; Zhuang Youxiang; Zhao Zhixiang; Golashvili, T.V.; Chechev, V.P.

    2000-01-01

    WWW chart of the nuclides was established on the basis of the latest evaluations of nuclear structure and decay data. By viewing WWW chart of the nuclides, one can retrieve the fundamental data of nuclide such as atomic mass, abundance, spin and parity; the decay mode, branching ratio, half-life and Q-value of radioactive nuclide, energy and intensity of strong γ-ray, etc. The URL (Uniform Resource Locator) of WWW chart of the nuclides is: http://myhome.py.gd.cn/chart/index,asp

  2. Evaluación del nivel de gestión de la innovación de la revista ECA Sinergia

    OpenAIRE

    Rogelio Pedro Suárez Mella; Azucena Nancy Rosillo Suárez; Carmen Natacha Pérez Cardoso

    2016-01-01

    Una de las salidas más importante del proceso de investigación de una universidad, es la generación de artículos científicos en revistas de alto impacto; en Ecuador, este resultado tiene un gran peso en los procesos de acreditación y categorización de las Instituciones de la Educación Superior (IES),  de ahí la importancia de las revistas indexadas en las IES. La Universidad Técnica de Manabí (UTM) ha trazado como estrategia, el incremento de las revistas científicas que permitan incrementar ...

  3. Evaluación del nivel de gestión de la innovación de la revista ECA Sinergia

    OpenAIRE

    Suárez Mella, Rogelio Pedro; Rosillo Suárez, Azucena Nancy; Pérez Cardoso, Carmen Natacha

    2016-01-01

    Una de las salidas más importante del proceso de investigación de una universidad, es la generación de artículos científicos en revistas de alto impacto; en Ecuador, este resultado tiene un gran peso en los procesos de acreditación y categorización de las Instituciones de la Educación Superior (IES),  de ahí la importancia de las revistas indexadas en las IES. La Universidad Técnica de Manabí (UTM) ha trazado como estrategia, el incremento de las revistas científicas que permitan increme...

  4. La adaptación de la revista VOGUE al nuevo contexto digital del periodismo de moda

    Directory of Open Access Journals (Sweden)

    Carmen Cristófol Rodríguez

    2017-05-01

    Full Text Available El presente trabajo analiza la adaptación al contexto digital de la revista Vogue, como paradigma del periodismo de moda, teniendo en cuenta la influencia que esta publicación ejerce sobre dicho sector. Tras una introducción contextual de las revistas femeninas, se examina Vogue como icono en su sector para posteriormente llevar a cabo el análisis de contenido de su web a través de las siguientes variables: audiencia, secciones principales, tipo de estructura, presencia de sus editoras en portada, formatos publicitarios, mecanismos de promoción en redes, distribución de los contenidos principales (moda y belleza, tipo y número de interactividad con las lectoras y uso del brand placement con las marcas selectas. Como principal conclusión, se puede decir que Internet se ha convertido en una herramienta aliada de las revistas de moda y que las redes sociales han resultado ser una gran oportunidad, si bien surgen ahora nuevos retos. En el caso de Vogue, cabe destacar que la revista ha ampliado su audiencia no solo cuantitativamente, sino también en nuevos perfiles, como por ejemplo la cobertura de una nueva franja de edad más joven.

  5. ¿Cuáles son las revistas, libros y personas más influyentes en la biología latinoamericana?

    Directory of Open Access Journals (Sweden)

    Julián Monge-Nájera

    2004-03-01

    Full Text Available Para identificar las revistas, libros y personas más influyentes en la biología latinoamericana, se envió por correo electrónico una encuesta a 553 personas dedicadas el tema, según la base de datos de la Revista de Biología Tropical. Un tercio de ellas respondió, concluyéndose que la Revista de Biología Tropical, es la más influyente de la región según las personas consultadas. Con esta excepción, la mayoría de las revistas influyentes son publicadas en países desarrollados. La distribución temática de las respuestas y las evaluaciones independientes descartan la posibilidad de que este y los demás resultados resulten de un sesgo entre los científicos consultados por ser de alguna manera próximos a la revista. Temáticamente, se mencionaron especialmente revistas del área marina y ecológica. A diferencia de la ciencia estadounidense, no hay personajes ni libros influyentes que sobresalgan de manera apabullante. Los resultados resaltan la subjetividad de premios y calificaciones en este campo y posiblemente resulten de que no hay tradición de que mujeres y hombres de ciencia locales aparezcan frecuentemente en los medios de comunicación, la poca capacidad de difundir internacionalmente los resultados locales y la insignificante importancia que la cultura iberoamericana concede a la ciencia. También sugieren la necesidad de que las revistas latinoamericanas hagan un esfuerzo para llenar mejor las necesidades del aparato científico regional (buena atención a los autores, un estricto rechazo de los manuscritos de inferior calidad, y una distribución a tiempo y muy amplia de las revistas. La marcada dominancia del sexo masculino puede deberse a que hay pocas mujeres trabajando en este campo o a que ellas no sean percibidas como sobresalientes por razones de inequidad sociocultural. La predominancia de nacionalidades de las personas consideradas como influyentes en la ciencia latinoamericana calzan en general con los pa

  6. Molecular elimination of Br2 in photodissociation of CH2BrC(O)Br at 248 nm using cavity ring-down absorption spectroscopy.

    Science.gov (United States)

    Fan, He; Tsai, Po-Yu; Lin, King-Chuen; Lin, Cheng-Wei; Yan, Chi-Yu; Yang, Shu-Wei; Chang, A H H

    2012-12-07

    The primary elimination channel of bromine molecule in one-photon dissociation of CH(2)BrC(O)Br at 248 nm is investigated using cavity ring-down absorption spectroscopy. By means of spectral simulation, the ratio of nascent vibrational population in v = 0, 1, and 2 levels is evaluated to be 1:(0.5 ± 0.1):(0.2 ± 0.1), corresponding to a Boltzmann vibrational temperature of 581 ± 45 K. The quantum yield of the ground state Br(2) elimination reaction is determined to be 0.24 ± 0.08. With the aid of ab initio potential energy calculations, the obtained Br(2) fragments are anticipated to dissociate on the electronic ground state, yielding vibrationally hot Br(2) products. The temperature-dependence measurements support the proposed pathway via internal conversion. For comparison, the Br(2) yields are obtained analogously from CH(3)CHBrC(O)Br and (CH(3))(2)CBrC(O)Br to be 0.03 and 0.06, respectively. The trend of Br(2) yields among the three compounds is consistent with the branching ratio evaluation by Rice-Ramsperger-Kassel-Marcus method. However, the latter result for each molecule is smaller by an order of magnitude than the yield findings. A non-statistical pathway so-called roaming process might be an alternative to the Br(2) production, and its contribution might account for the underestimate of the branching ratio calculations.

  7. Reactor BR2

    Energy Technology Data Exchange (ETDEWEB)

    Gubel, P

    2000-07-01

    The BR2 reactor is still SCK-CEN's most important nuclear facility. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. Various aspects concerning the operation of the BR2 Reactor, the utilisation of the CALLISTO loop and the irradiation programme, the BR2 R and D programme and the production of isotopes and of NTD-silicon are discussed. Progress and achievements in 1999 are reported.

  8. Reactor BR2

    International Nuclear Information System (INIS)

    Gubel, P.

    2000-01-01

    The BR2 reactor is still SCK-CEN's most important nuclear facility. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. Various aspects concerning the operation of the BR2 Reactor, the utilisation of the CALLISTO loop and the irradiation programme, the BR2 R and D programme and the production of isotopes and of NTD-silicon are discussed. Progress and achievements in 1999 are reported

  9. Hybridization of Single Nanocrystals of Cs4PbBr6 and CsPbBr3.

    Science.gov (United States)

    Weerd, Chris de; Lin, Junhao; Gomez, Leyre; Fujiwara, Yasufumi; Suenaga, Kazutomo; Gregorkiewicz, Tom

    2017-09-07

    Nanocrystals of all-inorganic cesium lead halide perovskites (CsPbX 3 , X = Cl, Br, I) feature high absorption and efficient narrow-band emission which renders them promising for future generation of photovoltaic and optoelectronic devices. Colloidal ensembles of these nanocrystals can be conveniently prepared by chemical synthesis. However, in the case of CsPbBr 3 , its synthesis can also yield nanocrystals of Cs 4 PbBr 6 and the properties of the two are easily confused. Here, we investigate in detail the optical characteristics of simultaneously synthesized green-emitting CsPbBr 3 and insulating Cs 4 PbBr 6 nanocrystals. We demonstrate that, in this case, the two materials inevitably hybridize, forming nanoparticles with a spherical shape. The actual amount of these Cs 4 PbBr 6 nanocrystals and nanohybrids increases for synthesis at lower temperatures, i.e., the condition typically used for the development of perovskite CsPbBr 3 nanocrystals with smaller sizes. We use state-of-the-art electron energy loss spectroscopy to characterize nanoparticles at the single object level. This method allows distinguishing between optical characteristics of a pure Cs 4 PbBr 6 and CsPbBr 3 nanocrystal and their nanohybrid. In this way, we resolve some of the recent misconceptions concerning possible visible absorption and emission of Cs 4 PbBr 6 . Our method provides detailed structural characterization, and combined with modeling, we conclusively identify the nanospheres as CsPbBr 3 /Cs 4 PbBr 6 hybrids. We show that the two phases are independent of each other's presence and merge symbiotically. Herein, the optical characteristics of the parent materials are preserved, allowing for an increased absorption in the UV due to Cs 4 PbBr 6 , accompanied by the distinctive efficient green emission resulting from CsPbBr 3 .

  10. El discurso sobre el actual proceso de paz en la revista Semana (2012-2014)

    OpenAIRE

    Rincón Henao, Diana Marcela

    2016-01-01

    Este artículo presenta un análisis sobre el discurso del actual proceso de paz en la revista Semana entre los años 2012 a 2014, dada la relevancia de la participación de los medios de comunicación en un proceso trascendental para el futuro del país y la reconciliación de la sociedad. El objetivo es describir qué estrategias argumentativas usa la revista a partir de las noticias sobre el proceso de paz durante este periodo. La metodología utilizada se basó en los esquemas argumentativos (top...

  11. The TbBr3–LiBr binary system: Experimental thermodynamic investigation and assessment of phase diagram

    International Nuclear Information System (INIS)

    Rycerz, L.; Gong, W.; Gaune-Escard, M.

    2013-01-01

    Highlights: ► DSC measurements for the (LiBr + TbBr 3 ) system. ► congruently Li3TbBr 6 and incongruently melting Li5TbBr 8 compounds. ► Thermodynamic description of the liquid phase in the (LiBr + TbBr 3 ) system. ► Assessment with a two-sublattice ionic solution model. - Abstract: DSC was used to study the phase equilibrium in the TbBr 3 –LiBr binary system. The results obtained provided a basis for constructing the phase diagram of this system. It exhibits two compounds: Li 5 TbBr 8 , which decomposes in the solid state at 611 K, and Li 3 TbBr 6 , which melts congruently at 785 K with the related enthalpy 59.1 kJ·mol −1 . The binary LiBr–TbBr 3 system was then optimized using the available experimental information on phase diagram and thermodynamic properties. A two-sub-lattice ionic solution model (Li + ) P :(Br − , TbBr 6 −3 , TbBr 3 ) Q was adopted to describe the liquid phase. The present assessment of the binary LiBr–TbBr 3 system was in good agreement with the corresponding experimental data and confirmed their consistency.

  12. $^{80m}$Br/$^{80}$Br a new electron-$\\gamma$ - PAC Probe

    CERN Document Server

    Correia, J G; Araújo, J P; Marques, J G; Soares, J C; Melo, A A

    2001-01-01

    Conversion electron-$\\gamma$ PAC measurements of the 49 keV - 37 keV cascade in $^{80}$Br through the intermediate 2$^{-}$ state with T$_{1/2}$=7.4 ns were performed with a system of two magnetic lens spectrometers and two BaF$_{2}$ scintillation detectors. The parent $^{80m}$Br activity with half-life of 4.4 hrs was implanted into Ni, Zn and graphite at the ISOLDE separator at CERN. The observed interaction frequency in the nickel matrix is in good agreement with the known value of the hyperfine field for Br in Ni and the magnetic moment of the 2$^{-}$ state. From the measured quadrupole interaction in Zn and graphite the electric field gradients at Br were obtained.

  13. Elimination of nonspecific radioactivity from [76Br]bromide in PET study with [76Br]bromodeoxyuridine

    International Nuclear Information System (INIS)

    Li Lu; Bergstroem, Mats; Fasth, Karl-Johan; Wu Feng; Eriksson, Barbro; Laangstroem, Bengt

    1999-01-01

    [ 76 Br]Bromodeoxyuridine ([ 76 Br]BrdU) might allow a determination of proliferation in vivo using positron emission tomography (PET), but only with consideration of organ nonspecific radioactivity constituted by [ 76 Br]bromide. A first study assessed the potential of diuretics to eliminate [ 76 Br]bromide. [ 76 Br]Bromide was injected in the vein of rats and different diuretic combinations were given. Urine was collected and radioactivity measured. Torasemide plus sodium chloride gave better 76 Br elimination than the other diuretics. In a second experiment, rats were given [ 76 Br]BrdU. After the radioactivity injection, the rats of the treatment group were given torasemide plus NaCl. At 44 h after the radioactivity injection, the radioactivity concentration and the fraction incorporated into DNA were measured in different organs. Using diuretics, the elimination of [ 76 Br]bromide was increased. The radioactivity decreased 30-50% in most of the organs but the highest radioactivity uptake was found in the organs with more active DNA synthesis. This method may facilitate the use of [ 76 Br]BrdU as a tracer for DNA synthesis using PET

  14. Revista de las Indias (1938-1950: La difusión cultural y el mundo letrado

    Directory of Open Access Journals (Sweden)

    Alexander Betancourt Mendieta

    2016-01-01

    Full Text Available En el mes de julio de 1936 apareció el primer número de la Revista de las Indias. A partir de 1938, la política editorial de la Revista apostó por una mirada más allá de las fronteras nacionales que trató de abarcar el continente temáticamente. Este cambio en el enfoque se instaló en una coyuntura compleja: la Guerra Civil Española (1936- 1939, la Segunda Guerra Mundial (1939-1945 y el cambio de gobierno de Alfonso López Pumarejo a Eduardo Santos (1938-1942. El contexto llevó a la Revista a poner énfasis en temas novedosos como difundir y comprender el quehacer letrado colombiano y el que se producía en lengua española, lo que permitió prestar atención a la situación de este tipo de trabajos en un momento de crisis; por eso, entre septiembre de 1944 y abril de 1945, la Revista elaboró y publicó las respuestas a cuatro preguntas de hombres de letras nacionales y extranjeros sobre las consecuencias que tendría la guerra para el mundo letrado en América. El presente texto propone una descripción de este proyecto editorial y cómo se percibía el devenir del quehacer intelectual en un momento de crisis internacional.

  15. Análisis métrico de las comunicaciones de la revista Centro Azúcar

    Directory of Open Access Journals (Sweden)

    Luis Ernesto Paz Enrique

    2016-03-01

    Full Text Available Las publicaciones científicas en línea generalmente se apoyan en los análisis métricos, favoreciendo la descripción de las revistas para su mejora continua. La revista Centro Azúcar se encuentra hace varios años en evaluación por bases de datos de prestigio internacional. La publicación carece de un estudio métrico que refleje la calidad de la publicación en consonancia a los indicadores establecidos por las fuentes de indización. Se plantean como objetivos del estudio examinar la producción científica de la revista Centro Azúcar desde el 2011 hasta el 2015, examinar las referencias contenidas en el período mencionado e identificar los índices de endogamia editorial presentes en la productividad y las referencias de los artículos publicados por la revista. Para la obtención de resultados se emplean métodos en los niveles teórico y empírico, destacándose el método bibliométrico. Se identifican varios aspectos que atentan contra la calidad de la publicación. Se aborda de forma novedosa el comportamiento de la endogamia editorial en las referencias. Se emiten valoraciones y se establecen aspectos a considerar por la publicación para que sea indizada en bases de datos de prestigio internacional.

  16. Intelectuais e política no Chile: Apontamentos sobre a revista Aurora de Chile (1938-1940

    Directory of Open Access Journals (Sweden)

    Ana Amélia M.C. Melo

    Full Text Available Resumo O objetivo deste artigo é o de examinar a revista Aurora de Chile que circula em Santiago entre 1938-1940. Criada por Pablo Neruda esta publicação apresentou-se como um importante órgão de comunicação da Alianza de Intelectuales de Chile para la Defensa de la Cultura (AICH, entidade fundada em articulação com outras organizações internacionais de intelectuais e com orientação da Comintern. A revista situou-se nos debates políticos e culturais desses anos no Chile e atuou vigorosamente na defesa dos princípios da democracia, das liberdades públicas e contra o fascismo. Neste estudo busco demonstrar o papel desta revista como uma das vozes da perspectiva frentista que passou a orientar o Partido Comunista Chileno no período.

  17. Análisis de las revistas iberoamericanas de Psicología y de Educación indexadas en el Journal Citation Reports del 2013

    Directory of Open Access Journals (Sweden)

    Sergio García-Pereira

    2015-12-01

    Full Text Available Con el objetivo de conocer la situación de las revistas iberoamericanas de Psicología y de Educación indexadas en el Journal Citation Reports (JCR del 2013, se realizó un estudio bibliométrico de dichas revistas atendiendo a los indicadores proporcionados por el JCR (factor de impacto [FI] del 2013, de los últimos 5 años y evolución del mismo, índice de inmediatez del 2013, país de origen, y posición y cuartil de cada revista dentro de su categoría y obtenidos a través de la Colección Principal de la Web of Science (WoS (índice h, índice g, media de citas por artículo, total de citas, año de indexación en la WoS y países de procedencia de los autores. Entre ambas disciplinas se obtuvieron 29 revistas indexadas en el JCR del 2013, siendo España el país iberoamericano con más revistas indexadas (12 de Psicología y 7 de Educación. Para Psicología, International Journal of Clinical and Health Psychology es la única revista iberoamericana en el primer cuartil y la que mayor FI tiene (2.915. Para Educación, la revista Cultura y Educación es la que tiene mayor FI (.375, mayor índice h (6 y mayor índice g (7 compartido con la revista Comunicar.

  18. Entre gueixas e samurais: a imigração japonesa nas revistas ilustradas (1897-1945)

    OpenAIRE

    Marcia Yumi Takeuchi

    2009-01-01

    Esta pesquisa tem como objetivo analisar os debates em torno da imigração japonesa nas revistas ilustradas brasileiras publicadas nas cidades de São Paulo e Rio de Janeiro, e na documentação diplomática, tendo em vista a difusão do antiniponismo na sociedade brasileira entre os anos 1897 e 1945. Buscarei comprovar, a partir da análise das charges e caricaturas publicadas nessas revistas, sejam de cunho literário ou irreverente (cômico), que a iconografia exerceu papel fundamental na construçã...

  19. Análisis de la revista decimonónica La Violeta

    Directory of Open Access Journals (Sweden)

    Díaz de Alda Heikkilä, M.ª Carmen

    2014-12-01

    Full Text Available This article discusses the magazine La Violeta (1862-1864, one of the most interesting publications of the Spanish 19th century, highlighting its formal aspects and journalistic merits. The article also covers the contributors, contents and evolution with reference to the significant role played by La Violeta and by her editor Faustina Sáez de Melgar in women’s education.Este trabajo aborda el análisis de la revista La Violeta (1862-1864, una de las más interesantes publicaciones de la época isabelina, destacándose sus aspectos formales y de interés periodístico Se destaca asimismo la nómina de colaboradores, y se analiza su contenido, evolución, y el papel representado por la revista y su directora Faustina Sáez de Melgar en la educación de las mujeres.

  20. Improved production of Br atoms near zero speed by photodissociating laser aligned Br2 molecules.

    Science.gov (United States)

    Deng, L Z; Yin, J P

    2014-10-28

    We theoretically investigated the improvement on the production rate of the decelerated bromine (Br) atoms near zero speed by photodissociating laser aligned Br2 precursors. Adiabatic alignment of Br2 precursors exposed to long laser pulses with duration on the order of nanoseconds was investigated by solving the time-dependent Schrödinger equation. The dynamical fragmentation of adiabatically aligned Br2 precursors was simulated and velocity distribution of the Br atoms produced was analyzed. Our study shows that the larger the degree of the precursor alignment, ⟨cos(2) θ⟩, the higher the production rate of the decelerated Br atoms near zero speed. For Br2 molecules with an initial rotational temperature of ~1 K, a ⟨cos(2) θ⟩ value of ~0.88 can result in an improvement factor of over ~20 on the production rate of the decelerated Br atoms near zero speed, requiring a laser intensity of only ~1 × 10(12) W/cm(2) for alignment.

  1. Desarrollo de estrategias de obtención de artículos de la Revista CIMEL

    Directory of Open Access Journals (Sweden)

    Karla Pacci-Salazar

    2012-02-01

    Full Text Available La indexación de la revista en nuevas bases de datos implica un mayor alcance y repercusión logrando que un mayor número de estudiantes o profesionales localice y acceda a sus contenidos.Para lograr ello se necesita cumplir los criterios de las bases de datos que consisten en poseer carácter científico, peer review, comité editorial, periodicidad, puntualidad, entre otras.2En los últimos años, la revista Ciencia e Investigación Médica Estudiantil Latinoamericana (CIMEL, órgano de difusión científica de la Federación Latinoamericana de Sociedades Científicas de  estudiantes de Medicina (FELSOCEM,ha implementado nuevas herramientas para mejorar la calidad de la revista, entre ellas contamos con un proceso de revisión por pares, sistema  para detección de plagios y el uso del gestor Open Journal System para el proceso editorial 5, 4; permitiéndonos acceder a importantes indexaciones a nivel latinoamericano. 1,3 (...

  2. All-Ambient Processed Binary CsPbBr3-CsPb2Br5 Perovskites with Synergistic Enhancement for High-Efficiency Cs-Pb-Br-Based Solar Cells.

    Science.gov (United States)

    Zhang, Xisheng; Jin, Zhiwen; Zhang, Jingru; Bai, Dongliang; Bian, Hui; Wang, Kang; Sun, Jie; Wang, Qian; Liu, Shengzhong Frank

    2018-02-28

    All-inorganic CsPbBr 3 perovskite solar cells display outstanding stability toward moisture, light soaking, and thermal stressing, demonstrating great potential in tandem solar cells and toward commercialization. Unfortunately, it is still challenging to prepare high-performance CsPbBr 3 films at moderate temperatures. Herein, a uniform, compact CsPbBr 3 film was fabricated using its quantum dot (QD)-based ink precursor. The film was then treated using thiocyanate ethyl acetate (EA) solution in all-ambient conditions to produce a superior CsPbBr 3 -CsPb 2 Br 5 composite film with a larger grain size and minimal defects. The achievement was attributed to the surface dissolution and recrystallization of the existing SCN - and EA. More specifically, the SCN - ions were first absorbed on the Pb atoms, leading to the dissolution and stripping of Cs + and Br - ions from the CsPbBr 3 QDs. On the other hand, the EA solution enhances the diffusion dynamics of surface atoms and the surfactant species. It is found that a small amount of CsPb 2 Br 5 in the composite film gives the best surface passivation, while the Br-rich surface decreases Br vacancies (V Br ) for a prolonged carrier lifetime. As a result, the fabricated device gives a higher solar cell efficiency of 6.81% with an outstanding long-term stability.

  3. ‘Notes for contributors’ section analysis of Physical Activity and Sport Sciences Spanish Journals Análisis de las ‘Instrucciones para autores’ de las revistas españolas de Ciencias de la Actividad Física y el Deporte

    Directory of Open Access Journals (Sweden)

    J. Valenciano

    2010-09-01

    Full Text Available

    ‘Notes for Contributors’ is a section of research journals that recently has receive more attention from journals editors. It is a crucial section for standardization, articles data bases introduction, and orientation for potential contributors. Finally, it is important for improving the whole journal quality. The purpose of this paper is to study ‘notes for contributors’’ section in Physical Activity and Sport Sciences Spanish research periodicals. Particularly, we analyze the inclusion of this section, its content, standardization style, and selection papers policy. Main results show that ‘notes’ section appears in twenty-eight journals (82.35%, and ten of them (29.41% declare to follow a certain standardization style. Selection papers policy is mentioned by twenty-five periodicals (73.53%, independently of their detailed information. Among them, thirteen journals mention an anonymous peer-review system, four a peer-review with no mention to anonymity, five refer to the advisory board as responsible for paper selection, one to the editor, and two publications mention an undefined system of papers selection.<br /> KEY WORDS: Physical Activity and Sport Sciences; scientific journals; instructions for authors; standardization.

     

    Las ‘instrucciones para los autores’ es una sección de las revistas científico-técnicas que cada vez reciben más atención por parte de sus editores y directores. Es una sección crucial para facilitar la normalización e introducción de sus artículos en bases de datos y servir de orientación a los autores potenciales. En definitiva, contribuye a la calidad del producto final de dichas publicaciones. Por ello, en este artículo estudiamos las instrucciones a los autores de las publicaciones periódicas españolas de carácter científico-técnico de las Ciencias de la

  4. New measurement of BR(D→ρμν)BR(D→Kμν) branching ratio

    Science.gov (United States)

    FOCUS Collaboration; Link, J. M.; Yager, P. M.; Anjos, J. C.; Bediaga, I.; Castromonte, C.; Machado, A. A.; Magnin, J.; Massafferri, A.; de Miranda, J. M.; Pepe, I. M.; Polycarpo, E.; Dos Reis, A. C.; Carrillo, S.; Casimiro, E.; Cuautle, E.; Sánchez-Hernández, A.; Uribe, C.; Vá, F.; Agostino, L.; Cinquini, L.; Cumalat, J. P.; O'Reilly, B.; Segoni, I.; Stenson, K.; Butler, J. N.; Cheung, H. W. K.; Chiodini, G.; Gaines, I.; Garbincius, P. H.; Garren, L. A.; Gottschalk, E.; Kasper, P. H.; Kreymer, A. E.; Kutschke, R.; Wang, M.; Benussi, L.; Bertani, M.; Bianco, S.; Fabbri, F. L.; Pacetti, S.; Zallo, A.; Reyes, M.; Cawlfield, C.; Kim, D. Y.; Rahimi, A.; Wiss, J.; Gardner, R.; Kryemadhi, A.; Chung, Y. S.; Kang, J. S.; Ko, B. R.; Kwak, J. W.; Lee, K. B.; Cho, K.; Park, H.; Alimonti, G.; Barberis, S.; Boschini, M.; Cerutti, A.; D'Angelo, P.; Dicorato, M.; Dini, P.; Edera, L.; Erba, S.; Inzani, P.; Leveraro, F.; Malvezzi, S.; Menasce, D.; Mezzadri, M.; Moroni, L.; Pedrini, D.; Pontoglio, C.; Prelz, F.; Rovere, M.; Sala, S.; Davenport, T. F.; Arena, V.; Boca, G.; Bonomi, G.; Gianini, G.; Liguori, G.; Lopes Pegna, D.; Merlo, M. M.; Pantea, D.; Ratti, S. P.; Riccardi, C.; Vitulo, P.; Gö, C.; Otalora, J.; Hernandez, H.; Lopez, A. M.; Mendez, H.; Paris, A.; Quinones, J.; Ramirez, J. E.; Zhang, Y.; Wilson, J. R.; Handler, T.; Mitchell, R.; Engh, D.; Hosack, M.; Johns, W. E.; Luiggi, E.; Moore, J. E.; Nehring, M.; Sheldon, P. D.; Vaandering, E. W.; Webster, M.; Sheaff, M.

    2006-06-01

    Using data collected by the FOCUS experiment at Fermilab, we present a new measurement of the charm semileptonic branching ratio BR(D→ρμν)BR(D→Kμν). From a sample of 320±44 and 11372±161D→ρμν and D→Kπμν events respectively, we find BR(D→ρμν)BR(D→Kμν)=0.041±0.006 (stat)±0.004 (syst).

  5. Editor de la revista: entre el sueño y la supervivencia

    Directory of Open Access Journals (Sweden)

    Maria das Graças TARGINO

    2015-05-01

    Full Text Available Analiza el papel del editor científico, relaciona las habilidades necesarias para aquellos que anhelan ser editor y reanuda las funciones que él realiza en una revista científica. Revisa los conceptos clave, como editor y editora, edición y proceso editorial. Recuerda la tipología de las editoras, y, sobre todo, muestra que el editor vive la paradoja de responder a las cuestiones culturales del país en que vive (el sueño y asegurar las ganancias por los libros que publica (la supervivencia. Describe el mercado editorial brasileño de las publicaciones científicas, en referencia a los títulos impresos y electrónicos. Destaca la mediación entre el autor y el editor y los dilemas inherentes a la función de generar la producción intelectual (de cualquier naturaleza; la mercantilización creciente de la producción intelectual y científica como producto comercial; la multiplicidad de funciones que la cotidianidad impone al editor; la cuestión cantidad versus calidad de los originales enviados a las revistas científicas. Por último, destaca la importancia del editor de revistas científicas, que garantiza la seguridad, la calidad y el reconocimiento de los títulos publicados y, por lo tanto, de la comunicación científica mediante el cuidado con la calidad de los trabajos científicos.

  6. Editor de la revista: entre el sueño y la supervivencia

    Directory of Open Access Journals (Sweden)

    Maria das Graças TARGINO

    2014-07-01

    Full Text Available Analiza el papel del editor científico, relaciona las habilidades necesarias para aquellos que anhelan ser editor y reanuda las funciones que él realiza en una revista científica. Revisa los conceptos clave, como editor y editora, edición y proceso editorial. Recuerda la tipología de las editoras, y, sobre todo, muestra que el editor vive la paradoja de responder a las cuestiones culturales del país en que vive (el sueño y asegurar las ganancias por los libros que publica (la supervivencia. Describe el mercado editorial brasileño de las publicaciones científicas, en referencia a los títulos impresos y electrónicos. Destaca la mediación entre el autor y el editor y los dilemas inherentes a la función de generar la producción intelectual (de cualquier naturaleza; la mercantilización creciente de la producción intelectual y científica como producto comercial; la multiplicidad de funciones que la cotidianidad impone al editor; la cuestión cantidad versus calidad de los originales enviados a las revistas científicas. Por último, destaca la importancia del editor de revistas científicas, que garantiza la seguridad, la calidad y el reconocimiento de los títulos publicados y, por lo tanto, de la comunicación científica mediante el cuidado con la calidad de los trabajos científicos.

  7. La adaptación de la revista VOGUE al nuevo contexto digital del periodismo de moda

    OpenAIRE

    Carmen Cristófol Rodríguez; Francisco Cabezuelo Lorenzo; Francisco Javier Paniagua Rojano

    2017-01-01

    El presente trabajo analiza la adaptación al contexto digital de la revista Vogue, como paradigma del periodismo de moda, teniendo en cuenta la influencia que esta publicación ejerce sobre dicho sector. Tras una introducción contextual de las revistas femeninas, se examina Vogue como icono en su sector para posteriormente llevar a cabo el análisis de contenido de su web a través de las siguientes variables: audiencia, secciones principales, tipo de estructura, presencia de sus editoras en por...

  8. Exploring Polaronic, Excitonic Structures and Luminescence in Cs4PbBr6/CsPbBr3.

    Science.gov (United States)

    Kang, Byungkyun; Biswas, Koushik

    2018-02-15

    Among the important family of halide perovskites, one particular case of all-inorganic, 0-D Cs 4 PbBr 6 and 3-D CsPbBr 3 -based nanostructures and thin films is witnessing intense activity due to ultrafast luminescence with high quantum yield. To understand their emissive behavior, we use hybrid density functional calculations to first compare the ground-state electronic structure of the two prospective compounds. The dispersive band edges of CsPbBr 3 do not support self-trapped carriers, which agrees with reports of weak exciton binding energy and high photocurrent. The larger gap 0-D material Cs 4 PbBr 6 , however, reveals polaronic and excitonic features. We show that those lattice-coupled carriers are likely responsible for observed ultraviolet emission around ∼375 nm, reported in bulk Cs 4 PbBr 6 and Cs 4 PbBr 6 /CsPbBr 3 composites. Ionization potential calculations and estimates of type-I band alignment support the notion of quantum confinement leading to fast, green emission from CsPbBr 3 nanostructures embedded in Cs 4 PbBr 6 .

  9. Metodos estadisticos empleados en los articulos originales publicados sobre tabaquismo en cuatro revistas medicas espanõlas (1985-1996

    Directory of Open Access Journals (Sweden)

    García López José Antonio

    2000-01-01

    Full Text Available Fundamento: Siendo el tabaquismo un tema prioritario de investigación y habiéndose incrementado el uso de técnicas estadísticas en las publicaciones biomédicas, se describen las técnicas estadísticas utilizadas y se cuantifica la accesibilidad estadística en los artículos originales sobre tabaquismo publicados en cuatro revistas médicas españolas. Métodos: Estudio descriptivo retrospectivo de los 154 artículos originales sobre tabaquismo publicados en las revistas Atención Primaria, Medicina Clínica (Barcelona, Revista Española de Salud Pública y Revista Clínica Española, en el período de 1985 a 1996. Un único observador codificó las técnicas estadísticas en 14 categorías de acuerdo con la clasificación elaborada por Carré et al (1995 a partir de la clasificación establecida por Emerson y Colditz (1983. Para el estudio de la accesibilidad estadística se estableció como referencia el conocimiento de técnicas bivariables, hasta regresión lineal simple. Resultados: El 81,8% de los originales utilizaron la estadística inferencial. Las categorías estadísticas más frecuentemente utilizadas fueron las "Tablas de contingencia" (37,0%, "Estadística descriptiva" (18,2% y "Tablas de vida y análisis de supervivencia" (9,7%. Un lector familiarizado con técnicas bivariables tuvo acceso estadístico al 96,0% de los originales de Revista Española de Salud Pública, al 86,2% de Atención Primaria, al 66,7% de Medicina Clínica (Barcelona y al 33,3% de Revista Clínica Española. Este mismo lector tuvo acceso al 100% de los originales publicados en el trienio 1985-87 y al 68,1% en el 1994-96. Conclusiones: La utilización de técnicas estadísticas varía en función del tema y diseño de investigación, de la revista y del año de publicación. La disminución de la accesibilidad estadística hace necesario identificar el perfil del lector estándar en nuestro país para adaptar sus conocimientos a las exigencias de la

  10. Health Policy on the pages of Revista de Saúde Pública

    Directory of Open Access Journals (Sweden)

    Aylene Bousquat

    Full Text Available ABSTRACT We carried out a narrative review of the scientific production in the area of Policy, Planning and Management in Revista de Saúde Pública (RSP, between 1967 and 2015. All the fascicles of RSP, in the period, were accessed via SciELO platform, which provides all articles online. We selected and classified the articles according to the main topics of scientific production in the area of Policy, Planning and Management. Revista de Saúde Pública has published 343 articles on this subject, with significant growth in the last two decades. The most discussed topics were Health Economics, Primary Health-care, Access and Use of Health Services, and Evaluation of Services and Programs. In the last decade, the topics of Policy and Access to Medicines and Public-Private Relationship, including judicialization, gained importance. The pages of RSP embraced the vast and diverse production of Policy, Planning and Management in its first 50 years, contributing to the consolidation of the area in Brazil.

  11. Dilemas da masculinidade em comunidades de leitores da revista Men's Health

    Directory of Open Access Journals (Sweden)

    Jair de Souza Ramos

    Full Text Available Neste artigo, analiso as representações sobre masculinidade e cuidado de si em comunidades de leitores da revista Men's Health. Com base na análise de tópicos e postagens em comunidades online, abordo desde as tensões em torno da oposição homossexual / heterossexual na autodefinição dos leitores, até a ênfase em um corpo concebido, a um só tempo, como saudável e masculino. Meu objetivo é examinar a construção de uma imagem de si masculina entre estes leitores, que se valem de temas, problemas e técnicas de si que estão presentes na revista, mas, sobretudo, além dela, e que dizem respeito a um determinado estilo de masculinidade, em que a expressão de si através da exposição do corpo desempenha um papel primordial.

  12. El análisis de contenido y el desarrollo del gusto musical: El caso de las revistas musicales

    Directory of Open Access Journals (Sweden)

    Amparo Porta Navarro

    2012-02-01

    Full Text Available Este artículo muestra algunos aspectos de la investigación realizada sobre los contenidos de revistas musicales, siendo su objetivo conocer qué es música para ellas y con que se relaciona. La metodología, cualitativa, utiliza como modelo el interaccionismo simbólico. Los resultados muestran que las revistas hablan de cantantes, canciones, muy poco de música y mucho de la propia revista, tienen un componente emocional alto, una escasa apuesta por la creación y un nivel crítico bajo. El estudio puede ayudar a dar visibilidad a algunos contextos de la música como fuentes del currículum que permitan orientar la búsqueda de respuestas desde la educación musical a este imaginario de alto impacto.

  13. EDITORIAL: POLÍTICA DE ÉTICA EN LA ESCRITURA DE PUBLICACIONES CIENTÍFICAS EN LA REVISTA LÁMPSAKOS

    Directory of Open Access Journals (Sweden)

    Gabriel Jaime Correa-Henao

    2014-01-01

    Full Text Available A partir del primer número de la revista Lámpsakos, editado en el primer semestre del año 2009, los comités editoriales y científicos de la revista han enfatizado en la necesidad de aplicar una política de publicación que garantice parámetros éticos por parte de cada autor. Dicha filosofía está documentada correctamente en las políticas de cesión de derechos, revisión por pares académicos y declaración de originalidad del trabajo, los cuales son aceptadas por los autores al momento de enviar sus manuscritos a través de la plataforma OJS o mediante diligenciamiento de formatos disponibles en la página de la revista.

  14. Editorial "La Revista lngeniería Industrial a tres años de su lanzamiento".

    Directory of Open Access Journals (Sweden)

    Iván Santelices Malfanti

    2004-07-01

    Full Text Available La Revista lngeniería Industrial a tres años de su lanzamiento se ha consolidado como una revista de divulgación cientffica y académica, y pretende ser una herramienta de cambio. No se puede hablar de cambio si no se promueve a las personas que tienen ideas para informar sobre lo que está produciendo a través de sus escritos. En un pasado no muy lejano, los actuales talentos tuvieron que sortear una serie de dificultades, la competencia era poca y se estimulaba a los jovenes dandoles espacio junto a los ya destacados.

  15. Yrityksen brändin uudistaminen

    OpenAIRE

    Saarimaa, Petri

    2015-01-01

    Brändin rakentaminen on tänä päivänä tärkeä osa yrityksen näkyvyyden ja kilpailukyvyn edistämisessä. Huolellisesti rakennetulla brändillä ja hyvällä markkinoinnilla yritys voi erottua kilpailijoistaan positiivisesti. Tie menestyvään brändiin on kuitenkin pitkä prosessi. Toimeksiantajana opinnäytetyössä toimi rakennusyritys Rakennus Vuoriot Oy. Opinnäytetyön tavoitteena oli toteuttaa yritykselle brändin uudistaminen luomalla kokonaan uusi perusta ja rakennusosat olemassa olevalle brändille...

  16. Chanel-brändin nuorentaminen Suomessa

    OpenAIRE

    Auvinen, Elina

    2017-01-01

    Tämän opinnäytetyön tavoitteena oli kartoittaa Chanel-kosmetiikkabrändin imagoa ja asiakaskuntaa Suomessa sekä luoda saatujen tulosten pohjalta kehitysehdotuksia Chanel-brändin markkinointiin Suomessa brändin nuorentamisen näkökulmasta. Työn toimeksiantaja oli Chanel-brändin jakelija Oy Transmeri Ab. Teoriataustassa käsiteltiin laajasti erilaisia brändin nuorentamiseen liittyviä aihepiirejä; bränditeoriaa, brändien uudistamista, luksusbrändien erityispiirteitä sekä niiden asiakkaita, digitaal...

  17. IV Encuentro Latinoamericano de Revistas de Arquitectura, Tlaxcala, México, Junio 1989

    Directory of Open Access Journals (Sweden)

    IV Seminario de Arquitectura Latinoamericana

    1989-12-01

    Full Text Available En el marco del IV Seminario de Arquitectura Latinoamericana - SAL IV - realizado en Tlaxcala, México, entre el 29 de mayo y el 2 de junio de 1989, tuvo lugar el IV Encuentro Latinoamericano de Revistas de Arquitectura.

  18. Revista de la Universidad Nacional o la tradición de la ruptura

    Directory of Open Access Journals (Sweden)

    Claudia Cadena Silva

    1990-05-01

    Full Text Available Las revistas, al igual que el hombre, conjugan estrictamente los verbos nacer, crecer, reproducirse y morir; mejor: la revista reproduce, en un lapso temporal mucho más corto, aquel ciclo tajante y sintético que cumple el hombre irremediablemente. Pero el origen de éstas no se corresponde, sin embargo, con el del hombre habrán de constituirse en testigos fieles de sus épocas, sí, pero sólo cuando el hombre así lo exija y tan sólo , además, cuando el universo que puebla lo permita. Si las revistas logran originar una tradición, ésta no se da en un mundo distinto del regido por las pautas de la modernidad , y la característica inherente a la tradición que fundan no es otra que la que distingue lo moderno, la ruptura: "La modernidad es una tradición polémica y que desaloja a la tradición imperante, cualquiera que ésta sea; pero la desaloja sólo para, un instante después, ceder el sitio a otra tradición que, a su vez, es otra manifestación momentánea de la actualidad. La modernidad nunca es ella misma: siempre es otra [...] La modernidad es una suerte de autodestrucción creadora".

  19. Los servicios electrónicos de información puntual y suministro de documentos: revistas frente a artículos

    Directory of Open Access Journals (Sweden)

    de la Peña Sánchez, C.

    1995-06-01

    Full Text Available The electronic information services CAS-IAS, acronym of current awareness service-individual article supply, arise in the last eighties. Many companies and institutions, related to the international serials industry, meeting the increasing demand of current information and individual articles of scientific, technical and academic journals, have decided to diversify their offer of information products and services. This kind of electronic information services have been input in the international communication networks. This paper analyzes the reasons which have given rise to the growth of this new industry, establishes the characteristics of these services and gives a non-exhaustive list of the different current awareness and individual article supply services emerged in the last years.<br>>A finales de los años ochenta tienen sus primeras manifestaciones los servicios electrónicos de información puntual o alerta bibliográfica y suministro de documentos, en inglés denominados CAS-IAS, acrónimo de current awareness service individual article supply. Numerosas empresas e instituciones, dedicadas de una u otra forma a la industria de las publicaciones periódicas, respondiendo a la creciente demanda de información puntual y de artículos sueltos de revistas, diversifican su oferta de productos y servicios de información y los introducen en las redes de comunicación de datos internacionales. El presente trabajo analiza las causas que han dado origen al nacimiento de esta nueva industria, define las características de estos servicios y proporciona una lista no exhaustiva de los aparecidos en los últimos años.

  20. INDICADORES BIBLIOMÉTRICOS DE ACTIVIDAD DE LA REVISTA MVZ CÓRDOBA 1994-2008

    Directory of Open Access Journals (Sweden)

    Marco González T

    2009-04-01

    Full Text Available Objetivo. Analizar el comportamiento bibliométrico de la revista MVZ-Córdoba y visualizar indicadores que permitan la toma de decisiones enfocadas a mejorar la calidad de la publicación. Materiales y métodos. Se emplearon los volúmenes del 1 al 13 compuestos por 49.2% de artículos originales, 17.4% de resúmenes de trabajos de grado, 17.7% de otros documentos, 8.9% de artículos de revisión, 4.3% de casos clínicos, 1.3% de artículos de opinión, 1.0% de comunicaciones breves, 0.3% de artículos institucionales, para un total de 305 manuscritos, 915 autores y 4881 referencias. Se determinaron los índices de colaboración (IC, productividad (IP, Price (IO, obsolescencia, aislamiento (IA, autocitación (SCR; también se evaluó la distribución porcentual y tipo de artículos, el número de autores y el promedio de citas. Resultados. Los índices generales IC, IP, IO, IA y SCR fueron 3.0, 2.18, 30.3, 7.67 y 8.9 % respectivamente; el análisis de Burton-Kebler reportó un envejecimiento anual que osciló entre 90.5 y 95.1%, lo que significa una pérdida de actualidad entre 4.93 y 9.52%. Conclusiones. La revista ha mostrado una calidad ascendente lo que se corrobora con la indización internacional. Para mantener y aumentar la calidad de la revista se debe reglamentar y verificar la actualidad de las referencias, controlar el SCR, el IA, aumentar el índice de Price, la vida media, realizar mediciones bibliométricas con mayor periodicidad, así como establecer la vigilancia sobre los índices bibliométricos que se generen de las indizaciones de la revista MVZ Córdoba.

  1. Revista USP em foco: Percorrendo o sertão

    Directory of Open Access Journals (Sweden)

    Lucia de Oliveira Almeida

    2008-10-01

    Full Text Available http://dx.doi.org/10.5007/1984-784x.2008v8n12p146 Em 1989, o reitor José Goldemberg assina o editorial de lançamento da Revista USP, no qual delineia um periódico cuja principal atribuição seria constituir-se em veículo para as pesquisas realizadas por professores e alunos da própria Universidade de São Paulo. No conjunto formado pelos quarenta primeiros fascículos, a tentativa de realização de uma leitura do presente se destaca na seção dossiê, apontada pelo próprio reitor como o espaço principal da revista. Nesses ensaios, em boa medida, o foco está concentrado na criação artística que emerge na década de oitenta e no início dos anos noventa. São textos de peculiar interesse, pois o periódico tenta olhar para o quadro enquanto a tinta ainda está fresca, visando promover um balanço no qual a música, o teatro e o cinema são analisados sem a rede de segurança que a longa distância dos anos oferece aos analistas.

  2. Cartas al editor publicadas en revistas biomédicas peruanas indizadas en SciELO-Perú 2006-2013

    Directory of Open Access Journals (Sweden)

    Juan José Montenegro-Idrogo

    Full Text Available Estudio bibliométrico que describe las características de cartas al editor publicadas en el período 2006-2013 en revistas biomédicas indizadas a SciELO-Perú. Se recopilaron 253 cartas (10,3% del total de publicaciones, el mayor número de cartas (139 fue de la Revista Peruana de Medicina Experimental y Salud Pública, con notorio aumento por años. El 25% de cartas presentaron participación médico-estudiantil. El 14% de cartas presentaron autores con filiación internacional y 27% de cartas con filiación endogénica - frecuente en revistas universitarias (AFM, RMH. Los criterios habituales que justifican la publicación de cartas fueron: opinión sobre hecho médico o de dominio público (35,6% y discusión de resultados, defectos metodológicos o de interpretación (22,9%. En revistas biomédicas indizadas a SciELO-Perú las cartas al editor constituyen un porcentaje de publicaciones que ha aumentado en los últimos años, con baja la publicación de cartas de hallazgos o datos propios, en comparación con criterios de opinión o crítica

  3. Revista de Saúde Pública: 50 years disseminating the knowledge in nutrition.

    Science.gov (United States)

    Sichieri, Rosely; Pereira, Rosangela A

    2016-12-22

    This work describes and comments on articles in the area of Public Health Nutrition published in Revista de Saúde Pública (RSP - Public Health Journal) from 1967 to 2016. We searched in the PubMed database restricted to the periodical "Revista de Saúde Pública" and using terms related to key topics in the area of Public Health Nutrition. We retrieved 742 articles and, after exclusion of duplicates and articles unrelated to the subject, we analyzed 441 articles, grouped according to subject: dental caries, anemia, hypovitaminosis A, macro/micronutrients, malnutrition, nutritional assessment, overweight/obesity, food consumption, low birthweight, and breastfeeding. We observed significant increase in the number of articles published and diversification of subjects addressed over the 50 years, representing the consistent development of the scientific field of Nutrition in Brazil. Since its inception, RSP has played an important role in the dissemination of knowledge about the main nutritional issues in Brazil. RESUMO Este trabalho descreve e comenta os artigos na área de Nutrição em Saúde Pública, publicados na Revista de Saúde Pública (RSP) de 1967 a 2016. Foi realizada busca na base de dados PubMed restrita ao periódico "Revista de Saúde Pública" e utilizando termos relacionados com temáticas chaves da área de Nutrição em Saúde Pública. Foram recuperados 742 artigos e, após as exclusões dos artigos repetidos e daqueles não relacionados com a temática, foram analisados 441 artigos, agrupados segundo o tema: cárie dental, anemia, hipovitaminose A, macro/micronutrientes, desnutrição, avaliação do estado nutricional, sobrepeso/obesidade, consumo de alimentos, baixo peso ao nascer, e aleitamento materno. Observou-se incremento significativo no número de artigos publicados e a diversificação dos temas tratados ao longo destes 50 anos, retratando o consistente desenvolvimento do campo científico da Nutrição no Brasil. Desde seu início, a

  4. Photoresponse of CsPbBr3 and Cs4PbBr6 Perovskite Single Crystals.

    Science.gov (United States)

    Cha, Ji-Hyun; Han, Jae Hoon; Yin, Wenping; Park, Cheolwoo; Park, Yongmin; Ahn, Tae Kyu; Cho, Jeong Ho; Jung, Duk-Young

    2017-02-02

    High-quality and millimeter-sized perovskite single crystals of CsPbBr 3 and Cs 4 PbBr 6 were prepared in organic solvents and studied for correlation between photocurrent generation and photoluminescence (PL) emission. The CsPbBr 3 crystals, which have a 3D perovskite structure, showed a highly sensitive photoresponse and poor PL signal. In contrast, Cs 4 PbBr 6 crystals, which have a 0D perovskite structure, exhibited more than 1 order of magnitude higher PL intensity than CsPbBr 3 , which generated an ultralow photoresponse under illumination. Their contrasting optoelectrical characteristics were attributed to different exciton binding energies, induced by coordination geometry of the [PbBr 6 ] 4- octahedron sublattices. This work correlated the local structures of lead in the primitive perovskite and its derivatives to PL spectra as well as photoconductivity.

  5. In situ Spectroscopy of Solid-State Chemical Reaction in PbBr2-Deposited CsBr Crystals

    Science.gov (United States)

    Kondo, Shin-ichi; Matsunaga, Toshihiro; Saito, Tadaaki; Asada, Hiroshi

    2003-09-01

    It is possible to measure the fundamental optical absorption spectra of CsPbBr3 and Cs4PbBr6, whose stability is predicted by the study of phase diagram in the binary system CsBr-PbBr2, by means of in situ optical absorption and reflection spectroscopy of thermally induced solid-state chemical reaction in PbBr2-deposited CsBr crystals. On heavy annealing of the crystals, the Pb2+ ions are uniformly dispersed in the crystal matrix. The present experiment provides a novel method for measuring intrinsic optical absorption of ternary metal halides and also for in situ monitoring of doping metal halide crystal with impurities (metal ions or halogen ions).

  6. All rights reserved www.ajol.infoand www.bioline.org.br/ja Impact of ...

    African Journals Online (AJOL)

    ADOWIE PERE

    electricity has become a common practice all over the world (Langfort, 1990; Kaushal et al. .... electric power in the generator. The steam generated ..... little solar energy, it is assumed that its influence ..... Biometry: the principles and practice of ...

  7. www.ajol.info and www.bioline.org.br/ja Evaluation of Serum Anion ...

    African Journals Online (AJOL)

    ADOWIE PERE

    pregnant control, and 20 pregnant women in each of the three trimesters of pregnancy. Ethical approval was ... regulate nutrient balance during this period is critical to the health of the ... atoms fall back to the ground state, light of characteristic ...

  8. All rights reserved www.ajol.info and www.bioline.org.br/ja Drought ...

    African Journals Online (AJOL)

    ADOWIE PERE

    vegetation growth and time lag in their response to dry or wet condition. © JASEM ... enhancing losses of life, human suffering and causing damage to the ... The southern part receives .... weather condition over most of the Sahelian stations.

  9. All rights reserved www.ajol.info and www.bioline.org.br/ja Drought ...

    African Journals Online (AJOL)

    ADOWIE PERE

    century as the result show a rapid decline in its occurrence which indicates improvement in rainfall. On the other ... caused a sudden break of early rainfall, poor spatio- temporal ..... Characteristics of 20th ... and Applied Genetics, 125, 625-645.

  10. O trato da gymnastica nas revistas médicas do Rio de Janeiro da primeira metade do século 19 - Thoughts on gymnastics in Rio de Janeiro medical journals in the first half of the nineteenth century

    Directory of Open Access Journals (Sweden)

    Victor Andrade Melo

    2015-05-01

    esclarecimiento de estas articulaciones entre el conocimiento y la práctica médica y la gimnasia, intentando percibir como esta mirada ha adquirido legitimidad, constituyendo una comprensión que se ha manifestado en la introducción de la práctica en las escuelas brasileñas. Con este fin, este estudio tiene el objetivo de discutir las miradas sobre la gimnasia publicadas en tres revistas médicas editadas en la ciudad de Río de Janeiro en la primera mitad del siglo 19: Semanário de Saúde Pública, Revista Médica Fluminense y Revista Médica Brasileira.Palabras-clave: gimnasia, educación física, medicina.LA GYMNASTIQUE DANS LES REVUES MEDICALES DE LA VILLE DE RIO DE JANEIRO A LA PREMIERE MOITIE DU 19E SIECLERésuméAu cours du 19e siècle, la gymnastique a été discuté, reconnu comme un problème important et diffusés par les institutions qui ont attribué le domaine des connaissances médicales. Nous sommes intéressés à enquêter sur ces liens entre les connaissances et la pratique médicale et la gymnastique, en essayant de comprendre comment ce regard particulier a acquis une légitimité, constituant une compréhension manifeste dans l'introduction de la pratique dans les écoles brésiliennes. À cette fin, la présente étude vise à examiner les emplacements sur la gymnastique dans trois revues médicales publiées à la ville de Rio de Janeiro à la première moitié du 19e siècle: Semanário de Saúde Pública, Revista Médica Fluminense et Revista Médica Brasileira.Mots-clé: gymnastique, éducation physique, médecine. 

  11. Estudio situacional de siete revistas latinoamericanas de neumología Situational study of seven Latin-American pulmonology journals

    Directory of Open Access Journals (Sweden)

    Manuel Oyarzún Gómez

    2007-06-01

    Full Text Available OBJETIVO: Caracterizar la situación de las revistas de neumología publicadas en Latinoamérica. MÉTODOS: Fue realizada una encuesta en reunión organizada por la Sociedad Latinoamericana de Tórax. Cada editor presentó un reporte y respondió a un cuestionario. RESULTADOS: Mejora en la adquisición de informaciones es la principal motivaci��n para las sociedades de neumología para la edición de sus propias revistas, considerando que la diseminación de conocimiento médico y el reporte de experiencias son los principales motivos para que los autores envíen sus trabajos. El error más común en los trabajos enviados es la poca conformidad con las directrices de la revista. Mejorar las relaciones entre autor, editor y revisor sería la mejor estrategia para perfeccionar la calidad de los textos. Algunas sugerencias para mejorar las revistas latinoamericanas: promover profesionales en tareas editoriales; encorajar a los revisores a que sean más meticulosos; y adoptar normas internacionales para la edición de revistas médicas. Fueron reportados los siguientes problemas: falta de periodicidad adecuada y regular de las ediciones; una disminución en la cantidad de trabajos originales que son considerados ejemplares en la especialidad; baja tasa de rechazo de trabajos enviados; alta rotación de editores. CONCLUSIÓN: Podemos hacer las siguientes recomendaciones: a pesar de varias revistas estar en formato electrónico, ellas también deben ser mantenidas en formato impreso; cada revista debe informar su tasa de suscripción, aunque esté incluida en los gastos de inscripción anual; a pesar de cada país de Latinoamérica poder optar por publicar su propia revista, la posibilidad de publicación de una revista multinacional de neumología latinoamericana debe ser explotada.OBJECTIVE: To characterize the situation of pulmonology journals published in Latin America. METHODS: A survey was conducted in a meeting sponsored by the Latin

  12. Dynamic Monte Carlo Simulations of Phase Ordering in Br Electrosorption on Ag(100)

    Science.gov (United States)

    Mitchell, S. J.; Brown, G.; Rikvold, P. A.

    2000-03-01

    We study the dynamics of Br electrosorption on single-crystal Ag(100) by Monte Carlo simulation. The system has a second-order phase transition from a low-coverage disordered phase at more negative potentials to a doubly degenerate c(2× 2) ordered phase at more positive potentials.(B.M. Ocko, et al.), Phys. Rev. Lett. 79, 1511 (1997). Effective lateral interactions were estimated by fitting equilibrium Monte Carlo isotherms to experiments. These are well described by nearest-neighbor exclusion and repulsive 1/r^3 interactions.(M.T.M. Koper, J. Electroanal. Chem. 450), 189 (1997). Considering adsorption/desorption and diffusion with barriers estimated from ab-initio calculations,(A. Ignaczak and J.A.N.F. Gomes, J. Electroanal. Chem. 420), 71 (1997). we simulate the time dependent Br coverage, order parameter, and x-ray scattering intensity following sudden potential steps across the phase boundary. For steps far into the ordered phase, dynamical scaling is observed. For smaller steps, the dynamics are more complicated. We also analyze hysteresis in a simulated cyclic-voltammetry experiment. Movies at http://www.scri.fsu.edu/ ~mitchell/.

  13. Tunable CsPbBr3/Cs4PbBr6 phase transformation and their optical spectroscopic properties.

    Science.gov (United States)

    Chen, Xiao; Chen, Daqin; Li, Junni; Fang, Gaoliang; Sheng, Hongchao; Zhong, Jiasong

    2018-04-24

    As a novel type of promising materials, metal halide perovskites are a rising star in the field of optoelectronics. On this basis, a new frontier of zero-dimensional perovskite-related Cs4PbBr6 with bright green emission and high stability has attracted an enormous amount of attention, even though its photoluminescence still requires to clarification. Herein, the controllable phase transformation between three-dimensional CsPbBr3 and zero-dimensional Cs4PbBr6 is easily achieved in a facile ligand-assisted supersaturated recrystallization synthesis procedure via tuning the amount of surfactants, and their unique optical properties are investigated and compared in detail. Both Cs4PbBr6 and CsPbBr3 produce remarkably intense green luminescence with quantum yields up to 45% and 80%, respectively; however, significantly different emitting behaviors are observed. The fluorescence lifetime of Cs4PbBr6 is much longer than that of CsPbBr3, and photo-blinking is easily detected in the Cs4PbBr6 product, proving that the zero-dimensional Cs4PbBr6 is indeed a highly luminescent perovskite-related material. Additionally, for the first time, tunable emissions over the visible-light spectral region are demonstrated to be achievable via halogen composition modulations in the Cs4PbX6 (X = Cl, Br, I) samples. Our study brings a simple method for the phase control of CsPbBr3/Cs4PbBr6 and demonstrates the intrinsic luminescence nature of the zero-dimensional perovskite-related Cs4PbX6 products.

  14. Estimating BrAC from transdermal alcohol concentration data using the BrAC estimator software program.

    Science.gov (United States)

    Luczak, Susan E; Rosen, I Gary

    2014-08-01

    Transdermal alcohol sensor (TAS) devices have the potential to allow researchers and clinicians to unobtrusively collect naturalistic drinking data for weeks at a time, but the transdermal alcohol concentration (TAC) data these devices produce do not consistently correspond with breath alcohol concentration (BrAC) data. We present and test the BrAC Estimator software, a program designed to produce individualized estimates of BrAC from TAC data by fitting mathematical models to a specific person wearing a specific TAS device. Two TAS devices were worn simultaneously by 1 participant for 18 days. The trial began with a laboratory alcohol session to calibrate the model and was followed by a field trial with 10 drinking episodes. Model parameter estimates and fit indices were compared across drinking episodes to examine the calibration phase of the software. Software-generated estimates of peak BrAC, time of peak BrAC, and area under the BrAC curve were compared with breath analyzer data to examine the estimation phase of the software. In this single-subject design with breath analyzer peak BrAC scores ranging from 0.013 to 0.057, the software created consistent models for the 2 TAS devices, despite differences in raw TAC data, and was able to compensate for the attenuation of peak BrAC and latency of the time of peak BrAC that are typically observed in TAC data. This software program represents an important initial step for making it possible for non mathematician researchers and clinicians to obtain estimates of BrAC from TAC data in naturalistic drinking environments. Future research with more participants and greater variation in alcohol consumption levels and patterns, as well as examination of gain scheduling calibration procedures and nonlinear models of diffusion, will help to determine how precise these software models can become. Copyright © 2014 by the Research Society on Alcoholism.

  15. [The 140th anniversary of Revista Médica de Chile].

    Science.gov (United States)

    Reyes, B Humberto; Andresen, H Max; Palma, H Joaquín

    2012-01-01

    Revista Médica de Chile was founded in 1872 and thus is one of the oldest medical journals being published since the 19th Century. The sponsoring institution--"Sociedad Médica de Santiago", founded in 1869--initially was the only scientific society in Chile, gathering medical doctors from every existing specialty. With the splitting of independent organizations representing specific specialties, including subspecial-ties of internal medicine, Sociedad Médica de Santiago focused its scope of action to become the "Chilean Society of Internal Medicine". Its official journal -Revista Médica de Chile--is currently a general and internal medicine journal that also publishes articles on scientific and technological advances in many fields of medicine and health sciences. While initially all authors were Chilean, the journal is now open to submissions from abroad and since the year 2000 articles are published in English when the local language of authors is not Spanish. The number of articles received determines an increasing administrative and editorial burden and, together with the high cost of publishing, will require changes in publication policies. The journal will participate in continuing medical education programs as soon as reaccreditation of medical specialties becomes officially organized in Chile.

  16. Dioctophyma renale in maned wolf in the geoeconomic region of Jatai, GO, Brazil - Case report

    Directory of Open Access Journals (Sweden)

    Valcinir Aloisio Scalla Vulcani

    2015-06-01

    Full Text Available ABSTRACT. Vulcani V.A.S., Franzo V.S., de Araújo D.P., Vicentin F.R., da Costa O.M., Rangel A.S. & Gomes L.A. [Dioctophyma renale in maned wolf in the geoeconomic region of Jatai, GO, Brazil - Case report.] Dioctophyma renale em Lobo-Guará na região geoeconômica de Jataí, GO, Brasil - Relato de caso. Revista Brasileira de Medicina Veterinária, 37(2:149-152, 2015. Laboratório de Anatomia, Curso de Medicina Veterinária, Universidade Federal de Goiás, Campus de Jataí, BR 364 Km 192, 3800, Setor Industrial, Jataí, GO 75801-615, Brasil. E-mail: aloisiosv@hotmail.com The maned Wolf (Chrysocyon brachyurus (Illiger, 1815 is the largest animal that represents the canidae species at the South America. The Dioctophyme renale (Goeze, 1782 known as the giant kidney-worm, because it is used to lodges mostly this organs, and it has been also responsible for the majority of captive animals deaths. A maned wolf necropsy was done at the animal anatomy laboratory of the Universidade Federal de Goiás (UFG - Campus Jataí and showed a nematode in the right kidney of the wild dog. This is the second confirmed case report of maned wolf that have free life in the city of Jataí and in State of Goiás, that suggests that is a common parasitism in this region of the country.

  17. Editorial Revista Ciencias Administrativas N°9

    Directory of Open Access Journals (Sweden)

    Comite Ejecutivo Revista CADM

    2017-05-01

    El progreso y la permanencia de una publicación dependen de la colaboración de los autores y de los lectores, por lo cual valoraremos nuevos aportes y comentarios. Estos nos ayudarán a superarnos en nuestra tarea de dar respuesta a las exigencias académicas de generación y difusión de nuevo conocimiento relacionado con el amplio campo de las ciencias de la administración. Confiados en que la propuesta de este nuevo número de la revista renovará el interés de nuestros lectores, agradecemos a los autores y a los pares evaluadores que han contribuido a su concreción, y quedamos a la espera de nuevas colaboraciones.

  18. Para tener entre manos una revista

    Directory of Open Access Journals (Sweden)

    Gabriel Giannone

    2017-12-01

    Full Text Available Consideramos importante rescatar el trabajo colectivo y acumulado que precede y sucede a la labor de intermediación académica que realiza una revista. Para ello recordamos una clásica frase prologal: el texto que usted tiene en sus manos. Con cierta ironía, porque quizás muy pocos de los lectores puedan tener entre manos y oler el papel impreso de Chasqui. Desde sus pantallas, sus tablets o sus teléfonos la intención es que se comprenda este número como un solo cuerpo. Y al mismo tiempo, como un esfuerzo colectivo. Alrededor de él están las propuestas, lecturas y análisis de cientos de autores, revisores externos y lectores.

  19. La construcción del conocimiento y un proyecto editorial. El caso de la revista Sociedades Rurales, Producción y Medio Ambiente

    Directory of Open Access Journals (Sweden)

    Pablo Torres Lima

    2005-01-01

    Full Text Available Este trabajo presenta, a partir de una breve reflexión sociológica sobre la construcción del conocimiento y la interdisciplina, el perfil académico de un proyecto editorial de la UAM-Xochimilco desde 1990, la revista Sociedades Rurales, Producción y Medio Ambiente. Esta revista cuenta con contribuciones de autores provenientes de las Ciencias Sociales y Humanidades (58% y Ciencias Biológicas (39%, principalmente. La procedencia de los autores que colaboran en esta publicación, queda de la siguiente manera: 46% son nacionales, 35% de la UAM, específicamente, y 19% del extranjero. De las 28 instituciones que han participado por medio de sus autores principales, en los ocho números publicados: el 57% son nacionales y 43% extranjeras. La revista se coedita con la Universidad Autónoma Agraria “Antonio Narro” desde 2004. Los principales retos a cubrir en el desarrollo de la revista consisten en: a dar cumplimiento a los criterios de CONACYT, b inscribir la revista a diversos índices, y c crear la versión electrónica disponible en Internet.

  20. Br2 elimination in 248-nm photolysis of CF2Br2 probed by using cavity ring-down absorption spectroscopy.

    Science.gov (United States)

    Hsu, Ching-Yi; Huang, Hong-Yi; Lin, King-Chuen

    2005-10-01

    By using cavity ring-down absorption spectroscopy technique, we have observed the channel of Br2 molecular elimination following photodissociation of CF2Br2 at 248 nm. A tunable laser beam, which is crossed perpendicular to the photolyzing laser beam in a ring-down cell, is used to probe the Br2 fragment in the B 3Piou+-X1Sigmag+ transition. The vibrational population is obtained in a nascent state, despite ring-down time as long as 500-1000 ns. The population ratio of Br2(v=1)/Br2(v=0) is determined to be 0.4+/-0.2, slightly larger than the value of 0.22 evaluated by Boltzmann distribution at room temperature. The quantum yield of the Br2 elimination reaction is also measured to be 0.04+/-0.01. This work provides direct evidence to support molecular elimination occurring in the CF2Br2 photodissociation and proposes a plausible pathway with the aid of ab initio potential-energy calculations. CF2Br2 is excited probably to the 1B1 and 3B2 states at 248 nm. As the C-Br bond is elongated upon excitation, the coupling of the 1A'(1B1) state to the high vibrational levels of the ground state X 1A'(1A1) may be enhanced to facilitate the process of internal conversion. After transition, the highly vibrationally excited CF2Br2 feasibly surpasses a transition barrier prior to decomposition. According to the ab initio calculations, the transition state structure tends to correlate with the intermediate state CF2Br+Br(CF2Br...Br) and the products CF2+Br2. A sequential photodissociation pathway is thus favored. That is, a single C-Br bond breaks, and then the free-Br atom moves to form a Br-Br bond, followed by the Br2 elimination. The formed Br-Br bond distance in the transition state tends to approach equilibrium such that the Br2 fragment may be populated in cold vibrational distribution. Observation of a small vibrational population ratio of Br2(v=1)Br2(v=0) agrees with the proposed mechanism.

  1. Elimination mechanisms of Br2+ and Br+ in photodissociation of 1,1- and 1,2-dibromoethylenes using velocity imaging technique

    International Nuclear Information System (INIS)

    Hua Linqiang; Zhang Bing; Lee, Wei-Bin; Chao, Meng-Hsuan; Lin, King-Chuen

    2011-01-01

    Elimination pathways of the Br 2 + and Br + ionic fragments in photodissociation of 1,2- and 1,1-dibromoethylenes (C 2 H 2 Br 2 ) at 233 nm are investigated using time-of-flight mass spectrometer equipped with velocity ion imaging. The Br 2 + fragments are verified not to stem from ionization of neutral Br 2 , that is a dissociation channel of dibromoethylenes reported previously. Instead, they are produced from dissociative ionization of dibromoethylene isomers. That is, C 2 H 2 Br 2 is first ionized by absorbing two photons, followed by the dissociation scheme, C 2 H 2 Br 2 + + hv→Br 2 + + C 2 H 2 . 1,2-C 2 H 2 Br 2 gives rise to a bright Br 2 + image with anisotropy parameter of -0.5 ± 0.1; the fragment may recoil at an angle of ∼66 deg. with respect to the C = C bond axis. However, this channel is relatively slow in 1,1-C 2 H 2 Br 2 such that a weak Br 2 + image is acquired with anisotropy parameter equal to zero, indicative of an isotropic recoil fragment distribution. It is more complicated to understand the formation mechanisms of Br + . Three routes are proposed for dissociation of 1,2-C 2 H 2 Br 2 , including (a) ionization of Br that is eliminated from C 2 H 2 Br 2 by absorbing one photon, (b) dissociation from C 2 H 2 Br 2 + by absorbing two more photons, and (c) dissociation of Br 2 + . Each pathway requires four photons to release one Br + , in contrast to the Br 2 + formation that involves a three-photon process. As for 1,1-C 2 H 2 Br 2 , the first two pathways are the same, but the third one is too weak to be detected.

  2. Photodissociation of C{sub 3}H{sub 5}Br and C{sub 4}H{sub 7}Br at 234 nm

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Hyun Kook; Paul, Dababrata; Hong, Ki Ryong; Cho, Ha Na; Kim, Tae Kyu [Pusan National University, Busan (Korea, Republic of); Lee, Kyoung Seok [Korea Research Institute of Standards and Science, Daejeon (Korea, Republic of)

    2012-01-15

    The photodissociation dynamics of cyclopropyl bromide (C-3H{sub 5}Br) and cyclobutyl bromide (C{sub 4}H{sub 7}Br) at 234 nm was investigated. A two-dimensional photofragment ion-imaging technique coupled with a [2+1] resonance enhanced multiphoton ionization scheme was utilized to obtain speed and angular distributions of the nascent Br({sup 2}P{sub 3/2}) and Br*({sup 2}P{sub 1/2}) atoms. The recoil anisotropies for the Br and Br* channels were measured to be βBr = 0.92 ± 0.03 and βBr* = 1.52 ± 0.04 for C{sub 3}H{sub 5}Br and βBr = 1.10 ± 0.03 and βBr* = 1.49 ± 0.05 for C{sub 4}H{sub 7}Br. The relative quantum yield for Br was found to be ΦBr = 0.13 ± 0.03 and for C{sub 3}H{sub 5}Br and C{sub 4}H{sub 7}Br, respectively. The soft radical limit of the impulsive model adequately modeled the related energy partitioning. The nonadiabatic transition probability from the 3A' and 4A' potential energy surfaces was estimated and discussed.

  3. Revista Propuesta y Control: la prensa del alfonsinismo antes y después de su presidencia

    OpenAIRE

    Wild, Carolina

    2017-01-01

    En el artículo se despliega una instancia descriptiva y analítica de la revista Propuesta y Control, que fuera dirigida por el expresidente Raúl Alfonsín en dos períodos: de agosto de 1976 a octubre de 1978 y de marzo de 1990 a diciembre de 1992. En su desarrollo, la autora compara las décadas en las que se editó la revista, la delimitación estética, los intereses culturales, el proceso discursivo de su línea editorial, los posicionamientos estratégicos y los giros conceptuales sobre política...

  4. XeBr exciplex laser

    International Nuclear Information System (INIS)

    Searles, S.K.

    1976-01-01

    Laser emission from the recently discovered XeBr exciplex laser was investigated as a function of the partial pressures of Xe and Br 2 . An optical loss process appears to limit high-pressure operation

  5. Elimination of nonspecific radioactivity from [{sup 76}Br]bromide in PET study with [{sup 76}Br]bromodeoxyuridine

    Energy Technology Data Exchange (ETDEWEB)

    Li Lu; Bergstroem, Mats E-mail: Mats.Bergstroem@pet.uu.se; Fasth, Karl-Johan; Wu Feng; Eriksson, Barbro; Laangstroem, Bengt

    1999-10-01

    [{sup 76}Br]Bromodeoxyuridine ([{sup 76}Br]BrdU) might allow a determination of proliferation in vivo using positron emission tomography (PET), but only with consideration of organ nonspecific radioactivity constituted by [{sup 76}Br]bromide. A first study assessed the potential of diuretics to eliminate [{sup 76}Br]bromide. [{sup 76}Br]Bromide was injected in the vein of rats and different diuretic combinations were given. Urine was collected and radioactivity measured. Torasemide plus sodium chloride gave better {sup 76}Br elimination than the other diuretics. In a second experiment, rats were given [{sup 76}Br]BrdU. After the radioactivity injection, the rats of the treatment group were given torasemide plus NaCl. At 44 h after the radioactivity injection, the radioactivity concentration and the fraction incorporated into DNA were measured in different organs. Using diuretics, the elimination of [{sup 76}Br]bromide was increased. The radioactivity decreased 30-50% in most of the organs but the highest radioactivity uptake was found in the organs with more active DNA synthesis. This method may facilitate the use of [{sup 76}Br]BrdU as a tracer for DNA synthesis using PET.

  6. Revista ilustrada (1898-1899 : de la ilustración al modernismo

    Directory of Open Access Journals (Sweden)

    Jorge H. Cadavid

    1994-05-01

    Full Text Available Todavía reciente el grito de independencia nacional, el memorable 7 de agosto de 1819 y la celebración del cuarto centenario del descubrimiento de América, el país se revela a través de publicaciones periódicas rebosantes de vida cultural, política. económica y científica. Cargadas de historia, estas publicaciones fueron testigos del nacimiento, crecimiento y transformción de un nuevo país. No como grandes empresas al mejor estilo capitalista sino, en muchos casos, como modestas -aunque ambiciosas- cofradías de literatos, politicos o periodistas. Dichas publicaciones tuvieron al unísono el propósito de "pasar revista" cuidadosamente a todo cuanto se ponía a la vanguardia, aunque el propósito sufriera la misma mortalidad del hombre. Ésta es la razón de tantas revistas -literarias o de diversa índole- pero también de su corta existencia, salvo contadas excepciones.

  7. “Cientistas não esperam pelo conhecimento”: entrevista com o professor Gilson Volpato

    Directory of Open Access Journals (Sweden)

    Revista Agrogeoambiental

    2013-04-01

    Full Text Available Desde agosto de 2011, a Revista Agrogeoambiental publica notas biográficas de avaliadores como um reconhecimento à colaboração imprescindível desses profissionais. Pensamos em inovar um pouco nessa edição e optamos por publicar trechos de uma conversa que tivemos com Gilson Volpato, professor da Universidade Estadual Paulista “Júlio de Mesquita Filho” em Botucatu (UNESP/Botucatu. No início desse ano, a equipe da Revista Agrogeoambiental e da Pró-Reitoria de Pesquisa, Pós-Graduação e Inovação viabilizou a vinda do professor Gilson Volpato para que ministrasse um curso de redação científica no câmpus Muzambinho do IFSULDEMINAS. Finalmente, na manhã da segunda-feira 4 de março, quase cem pesquisadores se reuniram para as 8 horas de um proveitoso curso durante o qual o professor Gilson Volpato explicou a lógica da redação científica e quais as precauções para quem pretende publicar em revistas internacionais de alto impacto. Após o curso, o editor chefe da Revista Agrogeoambiental e Pró-Reitor de Pesquisa, Pós-Graduação e Inovação, professor Marcelo Bregagnoli, encontrou-se com o professor Gilson para um bate papo sobre ciência, ensino de ciência e publicação. Abaixo estão trechos condensados da conversa. O vídeo com a versão integral pode ser conferido em http://www.ifsuldeminas.edu.br/~pppi

  8. Los archivos de revistas electrónicas y ECO

    OpenAIRE

    Keefer, Alice

    1998-01-01

    El concepto de revistas electrónicas ha despertado mucho interés a nivel teórico desde la "explosión" de internet a principios de los años 90. Pero ha sido sólo en los dos últimos años cuando se han realizado aplicaciones a gran escala, sobre todo en el entorno universitario, donde se comienza a acceder a textos electrónicos ofrecidos por algunas de las grandes editoriales.

  9. NOTA EDITORIAL: REVISTA GEONORTE VOLUME 8, NÚMERO.30, JUL. DEZ. 2017

    OpenAIRE

    João Cândido André da Silva Neto

    2017-01-01

    Prezados leitores e autores, a Revista Geonorte, do Departamento de Geografia e do Programa de Pós-Graduação em Geografia da Universidade Federal do Amazonas – UFAM, apresenta sua nova edição, Volume 8 Número 30, do 2° semestre de 2017.

  10. Partial structures in molten AgBr

    Energy Technology Data Exchange (ETDEWEB)

    Ueno, Hiroki [Department of Condensed Matter Chemistry and Physics, Faculty of Sciences, Kyushu University, 4-2-1 Ropponmatsu, Chuo-ku, Fukuoka 810-8560 (Japan)], E-mail: ueno@gemini.rc.kyushu-u.ac.jp; Tahara, Shuta [Faculty of Pharmacy, Niigata University of Pharmacy and Applied Life Science, Higashijima, Akiha-ku, Niigata 956-8603 (Japan); Kawakita, Yukinobu [Department of Physics, Faculty of Sciences, Kyushu University, 4-2-1 Ropponmatsu, Chuo-ku, Fukuoka 810-8560 (Japan); Kohara, Shinji [Research and Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI, SPring-8), 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan); Takeda, Shin' ichi [Department of Physics, Faculty of Sciences, Kyushu University, 4-2-1 Ropponmatsu, Chuo-ku, Fukuoka 810-8560 (Japan)

    2009-02-21

    The structure of molten AgBr has been studied by means of neutron and X-ray diffractions with the aid of structural modeling. It is confirmed that the Ag-Ag correlation has a small but well-defined first peak in the partial pair distribution function whose tail penetrates into the Ag-Br nearest neighbor distribution. This feature on the Ag-Ag correlation is intermediate between that of molten AgCl (non-superionic melt) and that of molten AgI (superionic melt). The analysis of Br-Ag-Br bond angle reveals that molten AgBr preserves a rocksalt type local ordering in the solid phase, suggesting that molten AgBr is clarified as non-superionic melt like molten AgCl.

  11. Investigations on the system Te/O/Br

    International Nuclear Information System (INIS)

    Oppermann, H.; Kunze, G.; Wolf, E.; Titov, V.A.; Kokovin, G.A.

    1978-01-01

    The melting point diagram of the system TeBr 4 -TeO 2 was obtained by total pressure measurements and DTA measurements. A congruent melting composition Te 6 O 11 Br 2 exists, the melting point is 570 0 C. The enthalpy of formation and the standard entropy of the species TeOBr 2 ,g was derived from measurements of the total pressure over Te 6 O 11 Br 2 /TeBr 4 and from the transport behaviour of the TeO 2 with Br 2 . From the decomposition-pressure measurements over Te 6 O 11 Br 2 /TeO 2 follow the partial pressures. The enthalpy of formation ΔH 0 (Te 6 O 11 Br 2 ,f,298) -453.5 kcal/Mol was obtained from the enthalpy of solution. The transport-behaviour of TeO 2 with HBr, TeBr 4 and Br 2 and that of Te 6 O 11 Br 2 is clear with the thermodynamic data of TeOBr 2 . (author)

  12. La crítica moderna en Argentina: la revista Los Libros (1969-1976

    Directory of Open Access Journals (Sweden)

    Fabio Esposito

    2015-09-01

    Full Text Available Desde el primer número de la revista Los Libros aparecen una serie de reseñas sobre obras críticas. Esta crítica de la crítica cobra importancia porque en ese conjunto de reseñas se configura un espacio de lecturas contrapuestas que se perfilan con mayor nitidez que en las reseñas sobre obras literarias, en donde, debido a la diversidad de los colaboradores, las lecturas resultan muy dispares. La crítica de la crítica pone en escena modos de lectura diferenciados entre sí que suponen estrategias antagónicas de encarar la modernización de la disciplina. Este trabajo se propone analizar en esta serie de reseñas las diversas tendencias de la crítica literaria argentina que comienzan a distinguirse en esta revista.

  13. Revista de Saúde Pública: 50 years disseminating the knowledge in nutrition

    Directory of Open Access Journals (Sweden)

    Rosely Sichieri

    Full Text Available ABSTRACT This work describes and comments on articles in the area of Public Health Nutrition published in Revista de Saúde Pública (RSP – Public Health Journal from 1967 to 2016. We searched in the PubMed database restricted to the periodical “Revista de Saúde Pública” and using terms related to key topics in the area of Public Health Nutrition. We retrieved 742 articles and, after exclusion of duplicates and articles unrelated to the subject, we analyzed 441 articles, grouped according to subject: dental caries, anemia, hypovitaminosis A, macro/micronutrients, malnutrition, nutritional assessment, overweight/obesity, food consumption, low birthweight, and breastfeeding. We observed significant increase in the number of articles published and diversification of subjects addressed over the 50 years, representing the consistent development of the scientific field of Nutrition in Brazil. Since its inception, RSP has played an important role in the dissemination of knowledge about the main nutritional issues in Brazil.

  14. A revista Saúde em Debate como fonte e objeto de estudo

    Directory of Open Access Journals (Sweden)

    Daniela Carvalho Sophia

    2013-11-01

    Full Text Available A presente nota de pesquisa busca divulgar estudo sobre o Centro Brasileiro de Estudos da Saúde e o movimento de reforma sanitária desenvolvido no âmbito do Programa de História das Ciências e da Saúde Pública da Casa de Oswaldo Cruz. Atém-se à revista Saúde em Debate , periódico do Centro, devido à relevância que teve na área ao longo dos dez anos de publicação. A utilização da revista na pesquisa deu visibilidade a questões pertinentes à participação de seus membros na reforma sanitária. Enfatiza-se o fato de que a utilização do periódico como fonte e objeto de estudo para fomentar a produção de pesquisa na área da saúde merece investigação mais ampla.

  15. Polymeric anionic networks using dibromine as a crosslinker; the preparation and crystal structure of [(C4H9)4N]2[Pt2Br10].(Br2)7 and [(C4H9)4N]2[PtBr4Cl2].(Br2)6.

    Science.gov (United States)

    Berkei, Michael; Bickley, Jamie F; Heaton, Brian T; Steiner, Alexander

    2002-09-21

    The reaction of M[PtX3(CO)] (M+ = [(C4H9)4N]+, X = Br, Cl) with an excess of Br2 gives the new platinum(IV) salts, [(C4H9)4N]2[Pt2Br10].(Br2)7, 1, and [(C4H9)4N]2[PtBr4Cl2].(Br2)6, 2, which, in the solid state, contain strong Br Br interactions resulting in the formation of polymeric networks; they could provide useful solid storage reservoirs for elemental bromine.

  16. Tendencias de la descripción bibliográfica en revistas españolas de acceso abierto

    OpenAIRE

    López Carreño, Rosana; Martínez Méndez, Francisco Javier

    2015-01-01

    El uso de normas y estilos de descripción bibliográfica estándares a nivel internacional ha dotado a las revistas científicas de un considerable nivel de rigor y uniformidad para el intercambio y manejo de datos bibliográficos entre sistemas distintos, al influir positivamente en la difusión y el impacto de la producción científica. En pleno auge de la publicación en acceso abierto creemos conveniente estudiar estos patrones de comportamiento, concretamente en las revistas editadas en España....

  17. Addition reaction of adamantylideneadamantane with Br2 and 2Br2: a computational study.

    Science.gov (United States)

    Islam, Shahidul M; Poirier, Raymond A

    2008-01-10

    Ab initio calculations were carried out for the reaction of adamantylideneadamantane (Ad=Ad) with Br2 and 2Br2. Geometries of the reactants, transition states, intermediates, and products were optimized at HF and B3LYP levels of theory using the 6-31G(d) basis set. Energies were also obtained using single point calculations at the MP2/6-31G(d)//HF/6-31G(d), MP2/6-31G(d)//B3LYP/6-31G(d), and B3LYP/6-31+G(d)//B3LYP/6-31G(d) levels of theory. Intrinsic reaction coordinate (IRC) calculations were performed to characterize the transition states on the potential energy surface. Only one pathway was found for the reaction of Ad=Ad with one Br2 producing a bromonium/bromide ion pair. Three mechanisms for the reaction of Ad=Ad with 2Br2 were found, leading to three different structural forms of the bromonium/Br3- ion pair. Activation energies, free energies, and enthalpies of activation along with the relative stability of products for each reaction pathway were calculated. The reaction of Ad=Ad with 2Br2 was strongly favored over the reaction with only one Br2. According to B3LYP/6-31G(d) and single point calculations at MP2, the most stable bromonium/Br3- ion pair would form spontaneously. The most stable of the three bromonium/Br3- ion pairs has a structure very similar to the observed X-ray structure. Free energies of activation and relative stabilities of reactants and products in CCl4 and CH2ClCH2Cl were also calculated with PCM using the united atom (UA0) cavity model and, in general, results similar to the gas phase were obtained. An optimized structure for the trans-1,2-dibromo product was also found at all levels of theory both in gas phase and in solution, but no transition state leading to the trans-1,2-dibromo product was obtained.

  18. Computations on the primary photoreaction of Br2 with CO2: stepwise vs concerted addition of Br atoms.

    Science.gov (United States)

    Xu, Kewei; Korter, Timothy M; Braiman, Mark S

    2015-04-09

    It was proposed previously that Br2-sensitized photolysis of liquid CO2 proceeds through a metastable primary photoproduct, CO2Br2. Possible mechanisms for such a photoreaction are explored here computationally. First, it is shown that the CO2Br radical is not stable in any geometry. This rules out a free-radical mechanism, for example, photochemical splitting of Br2 followed by stepwise addition of Br atoms to CO2-which in turn accounts for the lack of previously observed Br2+CO2 photochemistry in gas phases. A possible alternative mechanism in liquid phase is formation of a weakly bound CO2:Br2 complex, followed by concerted photoaddition of Br2. This hypothesis is suggested by the previously published spectroscopic detection of a binary CO2:Br2 complex in the supersonically cooled gas phase. We compute a global binding-energy minimum of -6.2 kJ mol(-1) for such complexes, in a linear geometry. Two additional local minima were computed for perpendicular (C2v) and nearly parallel asymmetric planar geometries, both with binding energies near -5.4 kJ mol(-1). In these two latter geometries, C-Br and O-Br bond distances are simultaneously in the range of 3.5-3.8 Å, that is, perhaps suitable for a concerted photoaddition under the temperature and pressure conditions where Br2 + CO2 photochemistry has been observed.

  19. Las revistas de tu casa: una provocación para innovar en la difusión académica

    Directory of Open Access Journals (Sweden)

    Mauricio Andión Gamboa

    2005-01-01

    Full Text Available Desde principios del siglo pasado, las universidades latinoamericanas han mostrado una vocación “extensionista”, es decir, un afán de difusión de la cultura científica y humanística más allá de los confines de las comunidades académicas. Las revistas y los libros han sido tradicionalmente la principal vía que las universidades han utilizado para difundir su producción cultural entre sus comunidades y la sociedad en general. La Galaxia de Gutenberg es sumamente extensa y, aún hoy, las universidades no han terminado de cruzarla. Las revistas universitarias son más que un medio de difusión, de hecho son proyectos académicos, la mayoría de ellos, que aglutinan grupos de interés integrados por afinidad ideológica, política, social o cultural. Para propiciar la discusión, se elaboró un video documental titulado “Las revistas de tu casa” que aborda la problemática actual de las revistas en la Universidad Autónoma Metropolitana (UAM, en su conjunto, y dentro del cambio de paradigma tecnológico.

  20. Density Functional Study of Structures and Electron Affinities of BrO4F/BrO4F-

    Directory of Open Access Journals (Sweden)

    Wei Li

    2009-07-01

    Full Text Available The structures, electron affinities and bond dissociation energies of BrO4F/BrO4F− species have been investigated with five density functional theory (DFT methods with DZP++ basis sets. The planar F-Br…O2…O2 complexes possess 3A' electronic state for neutral molecule and 4A' state for the corresponding anion. Three types of the neutral-anion energy separations are the adiabatic electron affinity (EAad, the vertical electron affinity (EAvert, and the vertical detachment energy (VDE. The EAad value predicted by B3LYP method is 4.52 eV. The bond dissociation energies De (BrO4F → BrO4-mF + Om (m = 1-4 and De- (BrO4F- → BrO4-mF- + Om and BrO4F- → BrO4-mF + Om- are predicted. The adiabatic electron affinities (EAad were predicted to be 4.52 eV for F-Br…O2…O2 (3A'← 4A' (B3LYP method.

  1. Revista Perseitas Vol. 1, Núm. 1, (julio-diciembre 2013

    Directory of Open Access Journals (Sweden)

    David Esteban Zuluaga Mesa

    2013-06-01

    Full Text Available La Revista Perseitas permite el encuentro de autores y temas en un ejercicio dialógico que funda comunidad académica y que fortalece, en un escenario donde se privilegia el quehacer técnico, la dinámica propia de las ciencias sociales y humanas, que si bien es cierto no se ha perdido, sí necesita oxigenarse. A propósito del nombre: Perseitas está conformado por la expresión Latina per, que según Santiago Segura Munguía en su Diccionario por raíces latinas y de las voces derivadas, traduce: a través de, por medio de, entre. Y la palabra latina se, entendida como: sí mismo, uno mismo. Per se, se entiende entonces como: por sí mismo, por sus propios medios (Segura, 2007. A partir del nombre de la revista se busca integrar el pensamiento de cada uno de los autores que en ella publiquen, dada la diversidad de perspectivas en torno a temas filosóficos y teológicos. Al reunir varias voces, distintas miradas y diversas conceptualizaciones, se busca que cada autor “per se”, manifieste su visión del mundo, sus reflexiones y experiencias, posibilitando ejercicios dialógicos en procura del fortalecimiento de la reflexión filosófica y teológica

  2. Presentación: Revista Iberoamericana de Tecnología en Educación y Educación en Tecnología

    OpenAIRE

    De Giusti, Armando Eduardo; Red de Universidades Nacionales con carreras de Informática de Argentina

    2012-01-01

    La Revista Iberoamericana de Tecnología en Educación y Educación en Tecnología (TE&ET) es una revista científica que publica artículos originales, reseñas bibliográficas y resúmenes de Tesis de Posgrado, en el área de Tecnología y Educación.

  3. CUMPLIMIENTO DE LOS CRITERIOS SOBRE AUTORÍA CIENTÍFICA EN LAS REVISTAS ESPAÑOLAS DE BIOMEDICINA Y CIENCIAS DE LA SALUD INCLUIDAS EN LOS JOURNAL CITATION REPORTS

    Directory of Open Access Journals (Sweden)

    Rafael Ruiz-Pérez

    2010-01-01

    Full Text Available Fundamentos: Las revistas científicas tienen reconocida la potestad de asegurar la validez del conocimiento difundido y la de certificar la autoría de las ideas. El objetivo de este trabajo es explorar en qué medida las políticas editoriales de las revistas contribuyen a asegurar la veracidad de la autoría científica publicada. Métodos: Análisis descriptivo transversal de los criterios sobre autoría científica utilizados por 23 revistas españolas de medicina incluidas en los Journal Citation Reports de 2008 y valoración de su ajuste de cumplimiento a los requisitos de uniformidad URM del ICMJE. Para su análisis los criterios se han estructurado en ítemes observables y para cuantificar su ajuste a los URM se han establecido seis niveles de cumplimiento. Resultados: El 52% de las revistas no hacen referencia a los URM. Sobre el ítem atribución de autoría el 39% de las revistas ofrece información sobre las condiciones que deben cumplir los firmantes de un artículo, pero solo 6 (26% revistas se ajustan a los URM. Sobre el ítem de responsabilidades contraídas se pronuncia el 61%, aunque ninguna revista se acerca a las formulaciones URM. En cuanto al número de autores por trabajo se encontró información en el 35% de las revistas y sobre el orden de firma en ninguna. El ítem sobre agradecimientos está recogido en el 61% pero solo el 30,4% definen su finalidad. Sobre la indicación de responsabilidad de correspondencia la presencia de criterios alcanza el 87%, sin embargo solo el 8,7% de las revistas lo vinculan al autor principal o primer firmante. Conclusiones: Como promedio de los 6 ítemes analizados, solo el 48% de las revistas incluyen alguna o varias instrucciones relacionadas con la autoría científica. Los resultados muestran escasa uniformidad en los criterios proporcionados a pesar a la existencia de los URM como estándar internacional en medicina.

  4. Análisis de la revista Bibliotecas: Anales de Investigación

    Directory of Open Access Journals (Sweden)

    Carlos Luis González-Valiente

    2016-03-01

    Full Text Available El objetivo de este artículo es describir el impacto académico, la calidad del proceso editorial, y las estrategias editoriales y de visibilidad de la revista científica cubana Bibliotecas. Anales de Investigación (BAI, editada por la Biblioteca Nacional de Cuba “José Martí”. Para determinar el impacto académico se efectúa un análisis de las citas recibidas a partir de la base datos Google Académico, mediante los indicadores bibliométricos: citas por año, citación vs. autocitación, revistas citables vs. documentos no citables, Índice Hirsch y factor de impacto. La calidad del proceso editorial y las estrategias de visibilidad se determinan mediante una autoevaluación efectuada con la metodología de los sistemas de indización SciELO, Scopus, CLASE, Redalyc, Latindex, Dialnet, y ERIH PLUS. Los resultados revelan una línea de crecimiento en la citación, destacándose como fuentes citantes las revistas científicas de las áreas Bibliotecología y Ciencia de la Información, Medicina y Ciencias de la Salud, y Educación. Se evidencia que algunos aspectos de formato y contenido inciden negativamente en la calidad del proceso editorial. Se proponen estrategias para mejorar la visibilidad científica a través de la inclusión en bases de datos, directorios, y redes sociales y académicas. En general, este estudio contribuye a la toma de decisiones editoriales para aumentar el impacto y la visibilidad científica de BAI.

  5. Notícias do Levantamento de Recursos e Necessidades de Enfermagem na Revista Brasileira de Enfermagem (1955-1958

    Directory of Open Access Journals (Sweden)

    Daniela Vieira Malta

    2014-10-01

    Full Text Available Estudo Histórico Social que tem como objeto notícias sobre o Levantamento de Recursos e Necessidades de Enfermagem no Brasil, publicadas na Revista Brasileira de Enfermagem entre 1955 e 1958. A fonte primária foi constituída pelos exemplares da Revista Brasileira de Enfermagem, publicados dentro do recorte temporal do estudo. As fontes secundárias foram constituídas por livros, artigos, dissertações e teses relativas à história da Enfermagem. A análise dos dados teve apoio das fontes secundárias e do pensamento do sociólogo Pierre Bourdieu. Os dados evidenciaram que a Revista Brasileira de Enfermagem, além de oportunizar a divulgação de notícias acerca do Levantamento, proporcionou visibilidade ao mesmo mediante a veiculação dessas notícias e, por fim, teve o efeito simbólico de conferir poder e prestígio à Enfermagem Brasileira.

  6. Editorial "La Revista Ingeniería Industrial, a cinco años de su lanzamiento".

    Directory of Open Access Journals (Sweden)

    Iván Santelices Malfanti

    2006-07-01

    Full Text Available La Revista Ingeniería Industrial, a cinco años de su lanzamiento se ha ido consolidando como una revista de  divulgación científica y académica, y pretende ser una herramienta de cambio en el ámbito de la Ingeniería Industrial. Sin embargo, no se puede hablar de cambios si no se fomenta a las personas que  tienen ideas y deseos de informar sobre lo que están produciendo como resultado de sus investigaciones o de su trabajo diario. En el pasado no muy lejano, para publicar en esta temática,  se debía sortear una serie de dificultades no menores, tales como la poca existencia de revistas relacionadas, la alta competencia, etc. No obstante hoy en día, sumado a todas estas dificultades, se agrega el veloz incremento del conocimiento, lo que en muchos casos sobrepasa la capacidad personal y de publicación. Hoy, hay gente joven que produce, a veces avances muy significativos, pero no tiene cabida para dar a conocer sus producciones debido a los escasos medios de publicación seriados y serios en su edición, es decir que son publicados con regularidad.  

  7. Affordances indutoras de inovação no jornalismo móvel de revistas para tablets

    Directory of Open Access Journals (Sweden)

    Adalton dos Anjos Fonseca

    2018-04-01

    Full Text Available Este artigo examina a inovação no jornalismo móvel a partir do conceito de affordance aplicado no estudo de revistas para tablets em três momentos definidos, entre 2010 e 2016. Criou-se uma ferramenta metodológica de análise com o objetivo de explorar os quatro conjuntos de affordances identificados: operação, coleção, compartilhamento e multimidialidade. A partir destes grupos, pontuou-se a emersão de affordances inovadoras possibilitadas pelos recursos e funcionalidades dos tablets e que também permitem interações inéditas ou renovadas na relação entre usuários e revistas. Entre elas estão: ouvir, assistir, jogar, pesquisar, armazenar. A comparação entre as revistas analisadas que mais se destacaram pela inovação também revelou uma tendência de estabilização de um formato para exploração dos recursos e funcionalidades do tablet, apesar de reconhecermos que há possibilidades ainda não exploradas pelos produtos que têm o potencial de induzir mais inovações.

  8. Utilidad de la clasificación de las revistas en la categoría dermatología de Index Medicus y de la Journal Citation Reports para localizar documentos de dermatólogos españoles (1987 y 2000

    Directory of Open Access Journals (Sweden)

    Ramos Rincón, José Manuel

    2003-12-01

    Full Text Available The objective is to compare the utility of the classifications of Journal Citation Reports (JCR (category «Dermatology & Venereal Diseases» (D&VD and Index Medicus (IM (category «Dermatology» («D» in order to locate the publications of Spanish dermatologists during the period 1987-2000 covered by MedLine database. We found 1,517 documents in dermatology journals, in which 1,130 (74.5% the first author was a dermatologist, in 122 (8% a dermatologist was not the first author, and in 265 (17.5% there was no dermatologist as author. Those journals included in section «D&VD» of JCR and not included in section «D» of IM presented the majority of documents without dermatologist (91.5%. On the other hand, only 8.8% of documents published in journals included in section «D&VD» of JCR and «D» of IM were not signed by a dermatologist (p < 0.001. In documents non-signed by dermatologists, the first author belongs to Allergy in 122 documents (8% followed byPathology in 78 cases. The 96.7% of 122 documents assigned to Allergy were published in the journal Contact Dermatitis. In conclusion, the classification used by IM grouping dermatological journals is a better option to locate the scientific production of Spanish dermatologists in international literature than the classification used by JCR.<br>>Se trata de comparar la utilidad de las clasificaciones del JCR (categoría Dermatology & Venereal Diseases» (D&VD e Index Medicus (IM (categoría «Dermatology»(D para localizar los documentos de dermatólogos españoles durante el periodo 1987-2000 registrados en la base de datos MedLine. De los 1517 documentos localizados en ambas bases, en 1130 (74,5% el primer firmante era un dermatólogo, en 122 (8% figuraba un dermatólogo en otras posiciones y en 265 (17,5% no aparecía ninguno. Las revistas incluidas en la categoría «D&VD» de JCR y no incluidas en el apartado «D» de IM recogieron la mayor proporción de los documentos sin dermat

  9. NOTA EDITORIAL: REVISTA GEONORTE VOLUME 8, NÚMERO.30, JUL. DEZ. 2017

    Directory of Open Access Journals (Sweden)

    João Cândido André da Silva Neto

    2017-12-01

    Full Text Available Prezados leitores e autores, a Revista Geonorte, do Departamento de Geografia e do Programa de Pós-Graduação em Geografia da Universidade Federal do Amazonas – UFAM, apresenta sua nova edição, Volume 8 Número 30, do 2° semestre de 2017.

  10. Postsynthesis Transformation of Insulating Cs4PbBr6 Nanocrystals into Bright Perovskite CsPbBr3 through Physical and Chemical Extraction of CsBr.

    Science.gov (United States)

    Palazon, Francisco; Urso, Carmine; De Trizio, Luca; Akkerman, Quinten; Marras, Sergio; Locardi, Federico; Nelli, Ilaria; Ferretti, Maurizio; Prato, Mirko; Manna, Liberato

    2017-10-13

    Perovskite-related Cs 4 PbBr 6 nanocrystals present a "zero-dimensional" crystalline structure where adjacent [PbBr 6 ] 4- octahedra do not share any corners. We show in this work that these nanocrystals can be converted into "three-dimensional" CsPbBr 3 perovskites by extraction of CsBr. This conversion drastically changes the optoelectronic properties of the nanocrystals that become highly photoluminescent. The extraction of CsBr can be achieved either by thermal annealing (physical approach) or by chemical reaction with Prussian Blue (chemical approach). The former approach can be simply carried out on a dried film without addition of any chemicals but does not yield a full transformation. Instead, reaction with Prussian Blue in solution achieves a full transformation into the perovskite phase. This transformation was also verified on the iodide counterpart (Cs 4 PbI 6 ).

  11. Dicty_cDB: FC-BR23 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available FC (Link to library) FC-BR23 (Link to dictyBase) - - - Contig-U15008-1 FC-BR23Z (Li...nk to Original site) - - FC-BR23Z 641 - - - - Show FC-BR23 Library FC (Link to library) Clone ID FC-BR23 (Li.../dictycdb.biol.tsukuba.ac.jp/CSM/FC/FC-BR/FC-BR23Q.Seq.d/ Representative seq. ID FC-BR2...3Z (Link to Original site) Representative DNA sequence >FC-BR23 (FC-BR23Q) /CSM/FC/FC-BR/FC-BR23Q.Seq....9 0.0 SLA211 (SLA211Q) /CSM/SL/SLA2-A/SLA211Q.Seq.d/ 1029 0.0 FC-BR23 (FC-BR23Q) /CSM/FC/FC-BR/FC-BR2

  12. Balloon-borne stratospheric BrO measurements: comparison with Envisat/SCIAMACHY BrO limb profiles

    Directory of Open Access Journals (Sweden)

    M. Dorf

    2006-01-01

    Full Text Available For the first time, results of four stratospheric BrO profiling instruments, are presented and compared with reference to the SLIMCAT 3-dimensional chemical transport model (3-D CTM. Model calculations are used to infer a BrO profile validation set, measured by 3 different balloon sensors, for the new Envisat/SCIAMACHY (ENVIronment SATellite/SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY satellite instrument. The balloon observations include (a balloon-borne in situ resonance fluorescence detection of BrO (Triple, (b balloon-borne solar occultation DOAS measurements (Differential Optical Absorption Spectroscopy of BrO in the UV, and (c BrO profiling from the solar occultation SAOZ (Systeme d'Analyse par Observation Zenithale balloon instrument. Since stratospheric BrO is subject to considerable diurnal variation and none of the measurements are performed close enough in time and space for a direct comparison, all balloon observations are considered with reference to outputs from the 3-D CTM. The referencing is performed by forward and backward air mass trajectory calculations to match the balloon with the satellite observations. The diurnal variation of BrO is considered by 1-D photochemical model calculation along the trajectories. The 1-D photochemical model is initialised with output data of the 3-D model with additional constraints on the vertical transport, the total amount and photochemistry of stratospheric bromine as given by the various balloon observations. Total [Bry]=(20.1±2.5 pptv obtained from DOAS BrO observations at mid-latitudes in 2003, serves as an upper limit of the comparison. Most of the balloon observations agree with the photochemical model predictions within their given error estimates. First retrieval exercises of BrO limb profiling from the SCIAMACHY satellite instrument on average agree to around 20% with the photochemically-corrected balloon observations of the remote sensing instruments (SAOZ

  13. Por que, Para que uma revista (tradução

    Directory of Open Access Journals (Sweden)

    Doralicia Furtado da Rosa

    2007-06-01

    Full Text Available Tempo. Poder-se-ia vê-la assim: mais que um desafio ao tempo, a revista é um desafío no tempo. A literatura seria essa possibilidade de desafiar o tempo em um lapso maior que o da proximidade, que o do próximo do presente. A revista, pelo contrário, trabalha para o presente, para a difusão do conto ou do poema ou do artigo ou do capítulo de romance. Logo, com sorte, esses textos estarão destinados a circular em livro ou então a ficarem pendentes no espaço cibernético até que alguém os recolha, até que alguém os “baixe” da internet. Ou se perderão para sempre ou se transformarão em referência de nota de rodapé em alguma tese de doutorado, para regozijo de eruditos ou como monótono insumo para a obtenção de um grau ou de um cargo universitário. Isso significa, como cria Borges, que “um periódico se lê para o olvido”, ao passo que “um livro se lê para a memória”? (BORGES, 1979, p.25.

  14. Energikravene i BR15

    DEFF Research Database (Denmark)

    Kragh, Jesper; Aggerholm, Søren

    2015-01-01

    Bygningsreglement 2015 – BR15 – gælder fra 1. januar 2016 med en overgangsfase frem til 1. juli 2016. Det bygger videre på BR10 og de tidligere udmeldte krav til nybyggeriet frem mod 2020. I denne kvikguide får du hurtigt overblik over, hvordan du sikrer, at de bygninger, du er med til at opføre...... eller renovere, lever op til BR15’s energikrav. Disse krav findes primært i reglementets kapitel 7 om energiforbrug og i kapitel 8 om installationer samt i kapitel 6 om indeklima....

  15. Revista educação temática digital: aproximação entre educação e ciência da informaçãoRevista educação temática digital: approach between education and information science

    Directory of Open Access Journals (Sweden)

    Tidra Viana Sorribas

    2007-01-01

    Full Text Available Análise do periódico Educação Temática Digital. Discorre sobre o histórico da revista desde a criação, em 1999, como Revista Online da Biblioteca Prof. Joel Martins. Examina o conteúdo temático dessa produção, enfatizando as aproximações entre a educação e a ciência da informação. Apresenta a distribuição dos 147 artigos por ano e por título da revista. Para discutir as tendências temáticas presentes nos artigos, realiza padronização dos termos da base de dados, com posterior reunião em grupos temáticos mais abrangentes e representativos de um espectro amplo de assuntos. Identifica como tema mais freqüente, entre o universo de descritores, a educação (incluindo-se os termos compostos como educação a distância, básica, colonial, cultural, entre outros seguida de ensino (ensino a distância, ensino inclusivo etc. e formação. Evidencia a contribuição da revista como expressão planejada de iniciativas editoriais interessadas nas questões da educação.This paper discusses Educação Temática Digital. It presents its historic since the start in 1999 as Revista Online da Biblioteca Prof. Joel Martins. It analyses the subject contents of that production, and points out the approach between Education and Information Science. It presents the distribution per year and per title of 147 articles. The terms of the database are standardized and then classified into major thematic groups in order tocomment on the subject contents trends, Education is revelead the most recurrent descriptor. It emphasyzes the contribution of the serial as a planned expression of editorial works on education issues.

  16. Revista de la Competencia y la Propiedad Intelectual | Año 5, Número 8, Otoño 2009

    OpenAIRE

    Ruiz Díaz, Gonzalo; Ruiz Díaz, Gonzalo; Instituto Nacional de Defensa de la Competencia y de la Protección de la Propiedad Intelectual, INDECOPI. Escuela de la Competencia y la Propiedad Intelectual; Instituto Nacional de Defensa de la Competencia y de la Protección de la Propiedad Intelectual, INDECOPI. Escuela de la Competencia y la Propiedad Intelectual; Ruiz Díaz, Gonzalo; Instituto Nacional de Defensa de la Competencia y de la Protección de la Propiedad Intelectual, INDECOPI. Escuela de la Competencia y la Propiedad Intelectual

    2009-01-01

    La Revista tiene como propósito fomentar la discusión y el intercambio de ideas y conocimientos acerca de los temas que afectan la concurrencia de los actores en los mercados y el desarrollo de la innovación y la propiedad intelectual. Aunque su contenido enfatiza el análisis económico y jurídico, también da cabida a contribuciones de otras disciplinas como las ciencias sociales y la administración. La Revista busca contribuir al análisis de las teorías sobre competencia y propiedad intelectu...

  17. Solvation dynamics through Raman spectroscopy: hydration of Br2 and Br3(-), and solvation of Br2 in liquid bromine.

    Science.gov (United States)

    Branigan, Edward T; Halberstadt, N; Apkarian, V A

    2011-05-07

    Raman spectroscopy of bromine in the liquid phase and in water illustrates uncommon principles and yields insights regarding hydration. In liquid Br(2), resonant excitation over the B((3)Π(0u)(+)) ← X((1)Σ(g)(+)) valence transition at 532 nm produces a weak resonant Raman (RR) progression accompanied by a five-fold stronger non-resonant (NR) scattering. The latter is assigned to pre-resonance with the C-state, which in turn must be strongly mixed with inter-molecular charge transfer states. Despite the electronic resonance, RR of Br(2) in water is quenched. At 532 nm, the homogeneously broadened fundamental is observed, as in the NR case at 785 nm. The implications of the quenching of RR scattering are analyzed in a simple, semi-quantitative model, to conclude that the inertial evolution of the Raman packet in aqueous Br(2) occurs along multiple equivalent water-Br(2) coordinates. In distinct contrast with hydrophilic hydration in small clusters and hydrophobic hydration in clathrates, it is concluded that the hydration shell of bromine in water consists of dynamically equivalent fluxional water molecules. At 405 nm, the RR progression of Br(3)(-) is observed, accompanied by difference transitions between the breathing of the hydration shell and the symmetric stretch of the ion. The RR scattering process in this case can be regarded as the coherent photo-induced electron transfer to the solvent and its radiative back-transfer.

  18. Measurement of the ratio of branching ratios BR(B+ → J/ψK+)/BR(B0 → J/φK0) and BR(B+ → J/ψK+)/BR(B+ → J/ψK*+)

    International Nuclear Information System (INIS)

    Atavales, J. B. G.

    1995-01-01

    A preliminary measurement of the ratio of branching ratios BR(B + → J/ψK + )/BR(B 0 → J/ψK 0 ) and BR(B + → J/ψK + )/BR(B + → J/ψK *+ ) is made by fully reconstructing each mode, where J/ψ → μ + μ - , K *+ → K 0 s π + and K 0 s → π + π - . The data were taken with the CDF detector during the 1993 run. The total integrated luminosity is ∼ 20pb -1 resulting in a sample of about 170 J/ψK ± , 50 J/ψK 0 S and 25 J/ψK *± candidate events. The results will be reported

  19. Potential of ultrafine grained materials as high performance penetrator materials

    Directory of Open Access Journals (Sweden)

    Lee C.S.

    2012-08-01

    Full Text Available The shear formability and the metal jet formability are important for the kinetic energy penetrator and the chemical energy penetrator, respectively. The shear formability of ultrafine grained (UFG steel was examined, mainly focusing on the effects of the grain shape on the shear characteristics. For this purpose, UFG 4130 steel having the different UFG structures, the lamellar UFG and the equiaxed UFG, was prepared by equal channel angular pressing (ECAP. The lamellar UFG steel exhibited more sharper and localized shear band formation than the equiaxed UFG steel. This is because a lamellar UFG structure was unfavourable against grain rotation which is a main mechanism of the band propagation in UFG materials. Meanwhile, the metal jet formability of UFG OFHC Cu also processed by ECAP was compared to that of coarse grained (CG one by means of dynamic tensile extrusion (DTE tests. CG OFHC Cu exhibited the higher DTE ductility, i.e. better metal jet stability, than UFG OFHC Cu. The initial high strength and the lack of strain hardenability of UFG OFHC Cu were harmful to the metal jet formability.

  20. Evolución de las revistas contables colombianas: de la reflexión a la investigación

    OpenAIRE

    Macías, Hugo A.; Patiño Jacinto, Ruth Alejandra

    2014-01-01

    El objetivo de este artículo es caracterizar las tres revistas contables colombianas indexadas en Colciencias: Contaduría Universidad de Antioquia, Cuadernos de Contabilidad y Lúmina. Para ello se realizó un análisis documental y se utilizaron algunas categorías bibliométricas en las tres revistas, desde su primer número hasta la información disponible a diciembre de 2013. En los resultados se describen los propósitos originales de cada publicación, las características de su evolución y se id...

  1. ICEV. Revista D´Estudis de la Violència. Nº 1 Enero-Marzo 2007 (Institut d'Estudis de la Violència

    Directory of Open Access Journals (Sweden)

    Herminia Gonzálvez Torralbo

    2007-01-01

    Full Text Available ICEV, Revista D ' Estudis de la Violencia ha comenzado un camino prometedor. Su primer número, en edición electrónica, es el primer ejemplo de aquello que esta revista se propone como objetivo fundamental: participar en el complejo campo de la comprensión del fenómeno de la violencia.

  2. La presencia de las revistas científicas de Ciencias Sociales en los social media: de la Web 1.0 a la 2.0.

    Directory of Open Access Journals (Sweden)

    Martín Oller Alonso

    2012-03-01

    Full Text Available Este artículo se ha llevado a cabo a partir de la participación en el comité organizador del I Encuentro Iberoamericano de Editores de Revistas Científicas de Ciencias Sociales. Gracias a esta invitación, conocimos profundamente los portales digitales de las revistas de Ciencias Sociales, incluidas en IN-RECS, con las que se decidió realizar este estudio. Consideramos fundamental la vinculación entre las redes sociales, la Web 2.0 y la difusión mediante medios de comunicación de las publicaciones científicas ya que las revistas científicas están al servicio de la sociedad del conocimiento, fomentando la repercusión económico-social de resultados investigadores y contribuyendo al crecimiento del saber y al surgimiento de redes científicas. Por ello este estudio descriptivo de las revistas busca la creación y el análisis de una base de datos de editores de revistas científicas de Ciencias Sociales con el que revelar la información a cerca de la incursión de las herramientas de comunicación online en éstas. Tras los resultados obtenidos hemos constatado que aún hoy las revistas científicas de Ciencias Sociales no aprovechan estas herramientas que les brinda la web, necesitando una mayor integración en Internet que les procure la capacidad de penetración que les permita llegar a un mayor número de ámbitos académicos y sociales.

  3. Reactivity of BrCl, Br₂, BrOCl, Br₂O, and HOBr toward dimethenamid in solutions of bromide + aqueous free chlorine.

    Science.gov (United States)

    Sivey, John D; Arey, J Samuel; Tentscher, Peter R; Roberts, A Lynn

    2013-02-05

    HOBr, formed via oxidation of bromide by free available chlorine (FAC), is frequently assumed to be the sole species responsible for generating brominated disinfection byproducts (DBPs). Our studies reveal that BrCl, Br(2), BrOCl, and Br(2)O can also serve as brominating agents of the herbicide dimethenamid in solutions of bromide to which FAC was added. Conditions affecting bromine speciation (pH, total free bromine concentration ([HOBr](T)), [Cl(-)], and [FAC](o)) were systematically varied, and rates of dimethenamid bromination were measured. Reaction orders in [HOBr](T) ranged from 1.09 (±0.17) to 1.67 (±0.16), reaching a maximum near the pK(a) of HOBr. This complex dependence on [HOBr](T) implicates Br(2)O as an active brominating agent. That bromination rates increased with increasing [Cl(-)], [FAC](o) (at constant [HOBr](T)), and excess bromide (where [Br(-)](o)>[FAC](o)) implicate BrCl, BrOCl, and Br(2), respectively, as brominating agents. As equilibrium constants for the formation of Br(2)O and BrOCl (aq) have not been previously reported, we have calculated these values (and their gas-phase analogues) using benchmark-quality quantum chemical methods [CCSD(T) up to CCSDTQ calculations plus solvation effects]. The results allow us to compute bromine speciation and hence second-order rate constants. Intrinsic brominating reactivity increased in the order: HOBr ≪ Br(2)O Br(2) < BrCl. Our results indicate that species other than HOBr can influence bromination rates under conditions typical of drinking water and wastewater chlorination.

  4. The BR eigenvalue algorithm

    Energy Technology Data Exchange (ETDEWEB)

    Geist, G.A. [Oak Ridge National Lab., TN (United States). Computer Science and Mathematics Div.; Howell, G.W. [Florida Inst. of Tech., Melbourne, FL (United States). Dept. of Applied Mathematics; Watkins, D.S. [Washington State Univ., Pullman, WA (United States). Dept. of Pure and Applied Mathematics

    1997-11-01

    The BR algorithm, a new method for calculating the eigenvalues of an upper Hessenberg matrix, is introduced. It is a bulge-chasing algorithm like the QR algorithm, but, unlike the QR algorithm, it is well adapted to computing the eigenvalues of the narrowband, nearly tridiagonal matrices generated by the look-ahead Lanczos process. This paper describes the BR algorithm and gives numerical evidence that it works well in conjunction with the Lanczos process. On the biggest problems run so far, the BR algorithm beats the QR algorithm by a factor of 30--60 in computing time and a factor of over 100 in matrix storage space.

  5. Abordagens metodológicas do ensino do esporte de Educação Física da Faculdade de Educação Física/UFG

    Directory of Open Access Journals (Sweden)

    2006-11-01

    Full Text Available Este texto trata das abordagens metodológicas do ensino do esporte no curso de Educação Física da FEF/UFG, desde a criação do curso até os momentos atuais. Aponta ainda as dificuldades e os acertos na adequação pedagógica do esporte, como componente da cultura corporal, que deveria ser considerada como conteúdo da educação física escolar pelos estudantes, principalmente na prática escolar. PALAVRAS-CHAVE: Abordagens metodológicas, cultura corporal, educação física. This paper is about the methodological approaches to sports teaching at School of Physical Education from its beginning to nowadays. Failure and success are pointed out in sports pedagogical adequacy as a component of corporal culture. It should be considered as a content of school physical education by the students, as far as school practice is considered. KEY WORDS: Methodological approaches, corporal culture, physical education.

  6. Estudio comparativo de cinco revistas de Ciencias del Deporte indizadas en WoS

    Directory of Open Access Journals (Sweden)

    Miguel Villam\\u00F3n

    2012-01-01

    Full Text Available La inclusión de las revistas en la Web of Science constituye un importante reconocimiento para sus comunidades científicas, pero los editores deben seguir mejorando su calidad. Por ello se realiza este trabajo de evaluación consistente en la comparación de cinco revistas españolas y brasileñas de ciencias del deporte a partir de 15 indicadores de transparencia, gestión editorial, visibilidad e internacionalización. Los resultados muestran la necesidad de ampliar la información que ofrecen, agilizar los procesos para reducir el tiempo entre recepción y publicación de los artículos y mejorar el factor de impacto. Como estrategias editoriales para incrementar los niveles de excelencia se proponen: enfatizar la internacionalización de las autorías, moderar la tasa de autocitas, aumentar la circulación por redes sociales e incorporar servicios de valor añadido.

  7. Análisis bibliométrico de la Revista de Economía Institucional en sus primeros diez años

    Directory of Open Access Journals (Sweden)

    Gonzalo Ordoñez

    2009-06-01

    Full Text Available Haciendo uso de métodos bibliométricos y herramientas de análisis de contenido y minería de datos, este artículo evalúa el desempeño de la Revista de Economía Institucional y explora sus fortalezas y debilidades a la luz de ocho criterios: la especialidad de la revista, el componente investigativo, su contribución a la popularización de la ciencia, su papel como medio de comunicación entre pares y creador de comunidad, la interdisciplinariedad, el pluralismo metodológico, el cosmopolitismo y el impacto. Para ello, los autores utilizan las bases de datos de indexación y referenciación más representativas, y el archivo documental de la Revista.

  8. Análisis de la auditoría en revistas españolas de Biblioteconomía y Documentación, 1975-1995

    Directory of Open Access Journals (Sweden)

    Jiménez Contreras, Evaristo

    1997-09-01

    Full Text Available Analysis of the research activity carried out in the field of Iibrary and information science. The development of scientific output, the main features of the journals concerned and the productivity of authors in the area of library and information science as well as their adjustment to Lotka's negative potential distribution are studied. As for the latter, the application of Pao's method is justified as being most appropriate for obtaining the necessary parameters and a procedure is put forward to work out the values used to set up an output elite within this field of specialisation. Lastly, the development of scientific output within the speciality is studied considering the institutional affiliation of authors.<br>>Estudio de las pautas de actividad investigadora en el ámbito de la Biblioteconomía y Documentación. Se analiza la evolución de la producción, las características de las revistas y la productividad de los autores en el ámbito de la Biblioteconomía y Documentación así como su ajuste a la distribución potencial negativa de Lotka. En este último apartado, se justifica la aplicación del método Pao como el más indicado para la obtención de los parámetros y se propone un procedimiento para el cálculo de los valores a partir de los cuales se puede considerar la élite productiva de la especialidad; por último, se estudia también la evolución de la producción en la especialidad a partir de las instituciones de las que proceden los autores.

  9. Dicty_cDB: FC-BR21 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available FC (Link to library) FC-BR21 (Link to dictyBase) - - - Contig-U15384-1 | Contig-U16443-1 FC-BR2...1P (Link to Original site) FC-BR21F 551 FC-BR21Z 122 FC-BR21P 673 - - Show FC-BR21 Library FC (L...ink to library) Clone ID FC-BR21 (Link to dictyBase) Atlas ID - NBRP ID - dictyBase ID - Link to Contig Cont...ig-U15384-1 | Contig-U16443-1 Original site URL http://dictycdb.biol.tsukuba.ac.jp/CSM/FC/FC-BR/FC-BR2...1Q.Seq.d/ Representative seq. ID FC-BR21P (Link to Original site) Representative DNA sequence >FC-BR21 (FC-BR2

  10. [Comparison of bibliometric indicators for neuropaediatrics in Revista de Neurologia and Anales de Pediatria over one decade].

    Science.gov (United States)

    Fernandez-Fernandez, Eva M; Pardo-De la Vega, Rafael; Amigo-Bello, Cristina; Solis-Sanchez, Gonzalo

    2013-07-01

    AIM. Bibliometric analysis of neuropaediatrics articles published in Revista de Neurologia and Anales de Pediatria between 2000 and 2009. MATERIALS AND METHODS. We selected neuropaediatrics articles published in two journal during the last decade (n = 1,085). We investigated authorship, topic and bibliography, to calculate indices of isolation, Price, collaboration, productivity, transience and self-citations. Analyze citations received by Web of Knowledge (WOK): articles cited, sometimes cited and h-index. RESULTS. 1,085 articles were analyzed, 255 published in Anales de Pediatria (9.4% of the total in that period) and 830 in Revista de Neurologia (21.7% total). The collaboration index was 4.3. The 89.7% of the authors were medical care (96% hospital staff, 0,8% of primary care staff and 2.9% of both). The 11.9% ??of the articles were collaborative between regions and the 26% came from foreign centers. The originals were 29.8% (80.8% descriptive observational studies, analytical 18.3% and 0.8% clinical trials). The most frequent topics were paroxysmal disorders (15.9%) and developmental, learning and behavioral disorders (15%). The average number of citations per article was 27.6, with an isolation rate of 13.4% and a Price index of 41.7%. The profile of the articles published in both journals is different, finding significant differences in almost all parameters analyzed. According WOK, the 255 items of Anales de Pediatria have received 40 citations and h-index of 3 and the 830 Revista de Neurologia 2,234 citations with h-index of 13. CONCLUSIONS. There are differences in the pediatric neurology publications between the two magazines with more international projection of Revista de Neurologia.

  11. Proceso de elaboración de una revista informativa

    OpenAIRE

    Asitimbay Llivisaca, Lourdes Mariela; Cárdenas Espinoza, Rocío Margarita; Cuesta Pillaga, Nancy Adriana

    2006-01-01

    El crecimiento de los Medios de Comunicación, en particular de los medios impresos han logrado que se puedan desarrollar formas de expresión muy amplias y variadas como: periódicos, revistas, folletos, libros, carteles, etc. Entre las características principales de estos medios está la facilidad que el lector al momento de contar con información a la mano, pues esta podrá ser revisada en cualquier momento; por el simple hecho de que están impresos, mientras que otros medios de comunicación no...

  12. Juventudes e imagens na revista Vogue Brasil (2000-2001)

    OpenAIRE

    Novelli, Daniela

    2009-01-01

    Esta pesquisa buscou verificar como anúncios publicitários de cinco marcas nacionais, veiculados na revista Vogue Brasil , no período de 2000 a 2001, exploraram conceitos socioculturais associados às juventudes na contemporaneidade, através da noção de juvenilização , considerada como uma categoria social produtora de sentidos no século XX. Os apontamentos teóricos e metodológicos demonstraram que essa noção é construída historicamente e operada pela publicidade, sendo o corpo sede de signi...

  13. La difusión de la teoría evolucionista de Lamarck en la revista La Abeja

    OpenAIRE

    Camós Cabeceran, Agustí

    1997-01-01

    La obra de Lamarck fue difundida, entre los años 1862 y 1865, por la revista La Abeja dirigida por Antoni Bergnes de las Casas y publicada en Barcelona. En dicha revista aparece explicada la teoría evolucionista de Lamarck tanto en la traducción de su obra. Histoire naturelle des végétaux, como en una serie de artículos anónimos sobre la reproducción de los seres vivos. Estos datos pueden revelar que, en la introducción del evolucionismo en España, la teoría evolucionista de Lamarck tuvo mayo...

  14. Posicionamiento en Google Académico y en la WEB de la Revista Ciencias Holguín

    OpenAIRE

    Jorge González-Alonso; Jhony Fabián-Pazmiño; Yudeisy Pérez-González

    2015-01-01

    Se caracterizó la presencia en Google Scholar y en la Web de 635 artículos de la Revista Ciencias Holguín publicados entre 1995 y el 2015. La revista ha mantenido un promedio de 4.85 citas por año y de 0.15 citas por artículo. Se realizó el agrupamiento por clústeres con el algoritmo de DB-Scan lo que permitió caracterizar cuatro grupos en función del número de citas. En uno de los clúster se agruparon 577 artículos (91% del total analizado) que no han sido referenciados en otras publicacione...

  15. Oxidation mechanisms of CF2Br2 and CH2Br2 induced by air nonthermal plasma.

    Science.gov (United States)

    Schiorlin, Milko; Marotta, Ester; Dal Molin, Marta; Paradisi, Cristina

    2013-01-02

    Oxidation mechanisms in air nonthermal plasma (NTP) at room temperature and atmospheric pressure were investigated in a corona reactor energized by +dc, -dc, or +pulsed high voltage.. The two bromomethanes CF(2)Br(2) and CH(2)Br(2) were chosen as model organic pollutants because of their very different reactivities with OH radicals. Thus, they served as useful mechanistic probes: they respond differently to the presence of humidity in the air and give different products. By FT-IR analysis of the postdischarge gas the following products were detected and quantified: CO(2) and CO in the case of CH(2)Br(2), CO(2) and F(2)C ═ O in the case of CF(2)Br(2). F(2)C ═ O is a long-lived oxidation intermediate due to its low reactivity with atmospheric radicals. It is however removed from the NTP processed gas by passage through a water scrubber resulting in hydrolysis to CO(2) and HF. Other noncarbon containing products of the discharge were also monitored by FT-IR analysis, including HNO(3) and N(2)O. Ozone, an important product of air NTP, was never detected in experiments with CF(2)Br(2) and CH(2)Br(2) because of the highly efficient ozone depleting cycles catalyzed by BrOx species formed from the bromomethanes. It is concluded that, regardless of the type of corona applied, CF(2)Br(2) reacts in air NTP via a common intermediate, the CF(2)Br radical. The possible reactions leading to this radical are discussed, including, for -dc activation, charge exchange with O(2)(-), a species detected by APCI mass spectrometry.

  16. Claudia: la revista de la mujer moderna en la Argentina de los años sesenta (1957-1973)

    OpenAIRE

    Cosse, Isabella

    2011-01-01

    Claudia es recordada como la revista femenina de la mujer moderna de los años 60. Este recuerdo pone de relieve el impacto que significó, en 1957, la aparición de este emprendimiento de la editorial Abril en la renovación del periodismo y de la imagen femenina. Pero desconoce las contradicciones de la línea editorial respecto al modelo femenino y los cambios que sufrió a lo largo del tiempo. Con estas ideas, el artículo se propone analizar la doble renovación que supuso la revista en el perio...

  17. Tecnologias do lar e pedagogias de gênero: representações da “dona de casa ideal” na revista Casa & Jardim (anos 1950 e 1960)

    OpenAIRE

    Padilha, Ana Caroline de Bassi

    2014-01-01

    Neste trabalho, temos como objetivo investigar as associações entre tecnologias domésticas e tipos de feminilidades na revista Casa & Jardim como mídia de pedagogias de gênero. O recorte de estudo tem como foco os discursos textuais e imagéticos sobre tecnologias do lar veiculados na revista Casa & Jardim durante as décadas de 1950 e 1960. Neste período, as revistas direcionadas para públicos femininos buscavam criar uma identificação das mulheres com o espaço e o consumo domésticos, apresent...

  18. Hybridization of Single Nanocrystals of Cs4PbBr6 and CsPbBr3

    OpenAIRE

    Weerd, Chris de; Lin, Junhao; Gomez, Leyre; Fujiwara, Yasufumi; Suenaga, Kazutomo; Gregorkiewicz, Tom

    2017-01-01

    Nanocrystals of all-inorganic cesium lead halide perovskites (CsPbX3, X = Cl, Br, I) feature high absorption and efficient narrow-band emission which renders them promising for future generation of photovoltaic and optoelectronic devices. Colloidal ensembles of these nanocrystals can be conveniently prepared by chemical synthesis. However, in the case of CsPbBr3, its synthesis can also yield nanocrystals of Cs4PbBr6 and the properties of the two are easily confused. Here, we investigate in de...

  19. Build a WWW Homepage for Your School!

    Science.gov (United States)

    Chrobak, Kimberly

    1995-01-01

    Discusses the use of World Wide Web (WWW) Homepage for school information. Topics include school sites; installation of a WWW browser; file tags; sites for beginner's guides to the language (HTML); two Usenet discussion groups; and a sample lesson plan including objective, procedure, and evaluation. (AEF)

  20. Análisis de la variabilidad y relaciones filogenéticas de las razas equinas autóctonas españolas de aptitud cárnica a partir del ADN mitocondrial

    OpenAIRE

    Gómez Ortiz, María Dolores; Romero, F.; Valera Córdoba, María Mercedes; Jordana, J.; Alonso, M.E.; Azor Ortiz, Pedro Javier

    2008-01-01

    Publicado en el año 2008 en: Revista ITEA, 104 (2), 283-289. http://www.aida-itea.org/index.php/revista/contenidos?idArt=85&lang=esp Webs desde donde descargar las ponencias: http://acteon.webs.upv.es/ Web del congreso: http://www.uco.es/genetica/MERAGEM/xivreunion.htm Se han estudiado la variabilidad y relaciones genéticas de las cuatro poblaciones equinas de aptitud cárnica de España de protección especial (41 muestras) (Burguete (BUR): 10, Jaca Navarra (JAC): 11, Hispano ...

  1. Revista Ingeniería Industrial

    Directory of Open Access Journals (Sweden)

    Peter Backhouse Erazo

    2015-06-01

    Full Text Available Estamos terminando un año académico caracterizado por movilizaciones estudiantiles, donde la discusión sobre el futuro de la educación superior ha estado preferentemente centrada en gratuidad por sobre temas la calidad. Independiente de ello, y cumpliendo con su real misión, la Facultad de Ingeniería en general y el Departamento de Ingeniería Industrial en particular han redoblado su esfuerzo para ofrecer a la comunidad científica espacios para el cultivo y difusión de la disciplina, a través de su Revista de Ingeniería Industrial. Ya es público que los nuevos criterios de acreditación del pregrado contienen, entre sus dimensiones de calidad, la creación e investigación formativa por el cuerpo docente. Se espera lograr que la unidad, carrera o programa promueva, incentive, gestione y verifique que entre sus docentes se desarrollen trabajos y estudios que impacten positivamente la teoría y la práctica de la enseñanza.

  2. Cd4As2Br3

    Directory of Open Access Journals (Sweden)

    Mohammed Kars

    2014-03-01

    Full Text Available Single crystals of Cd4As2Br3 (tetracadmium biarsenide tribromide were grown by a chemical transport reaction. The structure is isotypic with the members of the cadmium and mercury pnictidohalides family with general formula M4A2X3 (M = Cd, Hg; A = P, As, Sb; X = Cl, Br, I and contains two independent As atoms on special positions with site symmetry -3 and two independent Cd atoms, of which one is on a special position with site symmetry -3. The Cd4As2Br3 structure consists of AsCd4 tetrahedra sharing vertices with isolated As2Cd6 octahedra that contain As–As dumbbells in the centre of the octahedron. The Br atoms are located in the voids of this three-dimensional arrangement and bridge the different polyhedra through Cd...Br contacts.

  3. Acerca de las vanguardias artísticas latinoamericanas: el caso de las revistas de Buenos Aires y San Pablo en los años `20

    Directory of Open Access Journals (Sweden)

    Rigotti, Sebastián Miguel

    2014-01-01

    Full Text Available En el presente trabajo nos encargaremos de dar cuenta brevementede cuáles fueron aquellas condiciones sociales ypolíticas, que dieron lugar a la emergencia de las revistas delas vanguardias artísticas en Brasil y Argentina, y, al mismotiempo, qué efecto produjeron con su intervención en el espaciopúblico. Lo haremos a través de una breve reconstrucciónde casos específicos y significativos para la América Latinade la década de 1920: por el lado de San Pablo, haremosreferencia a la revista Klaxon y la Revista de Antropofagia;mientras que por el lado de Buenos Aires, nos referiremos alas revistas Proa y Martín Fierro. El trabajo parte de una reconceptualizacióndel espacio público a través de la relacióncultura-política, dando lugar a una novedosa inscripción delos textos clásicos sobre el tema propuesto

  4. Brændeovnes bidrag til luftforurening

    DEFF Research Database (Denmark)

    Pedersen, Jens Christian

    2010-01-01

    Brændeovnenes bidrag til luftforurening er blevet kortlagt med en hidtil uset detaljeringsgrad. Det er forskere fra Danmarks Miljøundersøgelser (DMU) på Aarhus Universitet som står bag kortlægningen. En omfattende målekampagne i Slagslunde viser at brændeovnene bidrager væsentligt til partikelfor......Brændeovnenes bidrag til luftforurening er blevet kortlagt med en hidtil uset detaljeringsgrad. Det er forskere fra Danmarks Miljøundersøgelser (DMU) på Aarhus Universitet som står bag kortlægningen. En omfattende målekampagne i Slagslunde viser at brændeovnene bidrager væsentligt til...

  5. Las revistas técnicas. Luces y sombras

    Directory of Open Access Journals (Sweden)

    Monjo Carrió, Juan

    2008-06-01

    Full Text Available The article addresses the role of technical journals in building innovation and draws attention to the inherent risks in the attempts to adapt them to new designs without suitable analysis of the specifics involved.To this end, the technical journals used in recent decades are reviewed and the periods when they were in circulation established, in the context of a discussion of the chief constructional and operational failures prompted by errors attributable to the indiscriminate adoption of the new technical developments described in their pages.Lastly, the basic conditioning factors to be borne in mind in construction design are analyzed and the importance of their application to new products or systems prior to their adoption is stressed.Se plantea el interés de las revistas técnicas para la innovación en la construcción edificatoria, y se llama la atención sobre los riesgos que lleva implícito el intento de adaptación de las mismas en los nuevos proyectos sin el adecuado análisis específico.Para ello, se hace una revisión de las revistas técnicas que se han utilizado en las últimas décadas, estableciendo sus periodos de vigencia, y se describen algunos de los principales problemas constructivos y funcionales que han provocado los errores por incorporación indiscriminada de las novedades técnicas que aparecían en las mismas.Asimismo, se lleva a cabo un análisis de los condicionantes constructivos básicos a tener en cuenta en el diseño constructivo y, por tanto, previo a la incorporación de cualquier producto o sistema novedosos.

  6. Emission characteristics of Xe-RbBr plasma

    Science.gov (United States)

    Heneral, A. A.; Avtaeva, S. V.

    2017-12-01

    The luminescence spectra of the longitudinal pulsed-periodic discharge in Xe-RbBr gas-vapour mixtures at low pressures are experimentally studied. Conditions for obtaining strong UV radiation of XeBr* exiplex molecules in the spectral range of 200-425 nm are found. The greatest output of the XeBr* UV radiation is provided at temperature of the gas-discharge tube walls of ~1000 K. The maximum UV emission power of the whole plasma volume is 4.8 W. Formation of XeBr* exciplex molecules in the pulsed-periodic discharge in Xe-RbBr gas-vapour mixtures at low pressures is discussed.

  7. A LINGUAGEM E O EU/NÓS

    Directory of Open Access Journals (Sweden)

    Luiz Henrique Touguinha de Almeida

    2012-01-01

    Full Text Available RESUMO: Ocupa-se, o presente, de uma pesquisa em documentos impressos e digitais no sentido de estudar a origem da linguagem e seu aspecto social e constitutivo do ser. A fim de cumprir sua finalidade, ampara-se em estudiosos como Heidegger, Humboldt, Vygotsky, Tomasello, entre outros, e em sites como http://www.filologia.org.br, http://www.apario.com.br/forumdeutsch/revistas, entre outros. Justifica-se o estudo a partir da indefinição, ainda que por séculos venha sendo estudada, da origem de seu objeto, indefinição essa confirmada nas conclusões parciais do trabalho e, também, a partir da necessidade humana de identificar a influência que exerce a linguagem em seu aspecto constitutivo e procedimental, que levou à identificação total com Humboldt e Vygotsky, quando o primeiro defende que o homem somente vê o mundo conforme lhe é mostrado pela linguagem e, o segundo, defende que o significado, indissociável da linguagem, é um fenômeno do pensamento verbal que garante um mundo com conceitos e culturas que se apóiam na linguagem. Ainda, com base nessas idéias dos dois pensadores restou, confirmando que, por mais que se estude sobre o tema, respostas deverão ser buscadas, o seguinte questionamento: de que maneira as diferentes linguagens das tecnologias da atualidade, num contexto globalizado, influenciam a humanidade?

  8. O DISCURSO DO CONSUMO MORALISTA, NA REVISTA TURMA DA MÔNICA JOVEM

    Directory of Open Access Journals (Sweden)

    Flávia Meneguelli Ribeiro Setubal

    2016-08-01

    Full Text Available A proposta do artigo é contribuir no âmbito educacional e dos estudos do consumo, desenvolvendo uma análise crítica da revista em quadrinhos Turma da Mônica Jovem (TMJ, dentro dos pressupostos teóricos e metodológicos dos estudos da semiótica discursiva, tendo como pano de fundo a sociedade de consumo atual. O corpus é formado pela edição 58, intitulada “Conflito de Gerações”, com o objetivo de identificar como o discurso do consumo moralista é apropriado pela revista, bem como que estratégias enunciativas são utilizadas para inscrever o público infantojuvenil neste discurso. Os resultados apontam para um alerta ao consumo desordenado de informações na internet, reiterando uma característica marcante do público infantojuvenil de TMJ, uma vez que seu discurso figurativiza essa relação jovens x tecnologia, o tempo todo. Ainda, a categoria de consumo moralista tem foco no público masculino, colocando os meninos como personagens principais das tramas ou situações apresentadas.http://dx.doi.org/10.21714/pretexto.v17i2.4085

  9. Free-tropospheric BrO investigations based on GOME

    Science.gov (United States)

    Post, P.; van Roozendael, M.; Backman, L.; Damski, J.; Thölix, L.; Fayt, C.; Taalas, P.

    2003-04-01

    Bromine compounds contribute significantly to the stratospheric ozone depletion. However measurements of most bromine compounds are sparse or non-existent, and experimental studies essentially rely on BrO observations. The differences between balloon and ground based measurements of stratospheric BrO columns and satellite total column measurements are too large to be explained by measurement uncertainties. Therefore, it has been assumed that there is a concentration of BrO in the free troposphere of about 1-3 ppt. In a previous work, we have calculated the tropospheric BrO abundance as the difference between total BrO and stratospheric BrO columns. The total vertical column densities of BrO are extracted from GOME measurements using IASB-BIRA algorithms. The stratospheric amount has been calculated using chemical transport models (CTM). Results from SLIMCAT and FinROSE simulations are used for this purpose. SLIMCAT is a widely used 3D CTM that has been tested against balloon measurements. FinROSE is a 3D CTM developed at FMI. We have tried several different tropospheric BrO profiles. Our results show that a profile with high BrO concentrations in the boundary layer usually gives unrealistically high tropospheric column values over areas of low albedo (like oceans). This suggests that the tropospheric BrO would be predominantly distributed in the free troposphere. In this work, attempts are made to identify the signature of a free tropospheric BrO content when comparing cloudy and non-cloudy scenes. The possible impact of orography on measured BrO columns is also investigated.

  10. Measurement of the relative branching ratio BR(Ξc+-- >p+K- π+)/BR(Ξc+-->Ξ- π+π+)

    Science.gov (United States)

    FOCUS Collaboration; Link, J. M.; Reyes, M.; Yager, P. M.; Anjos, J. C.; Bediaga, I.; Göbel, C.; Magnin, J.; Massafferri, A.; de Miranda, J. M.; Pepe, I. M.; dos Reis, A. C.; Sima~o, F. R. A.; Carrillo, S.; Casimiro, E.; Sánchez-Hernández, A.; Uribe, C.; Vázquez, F.; Cinquini, L.; Cumalat, J. P.; O'Reilly, B.; Ramirez, J. E.; Vaandering, E. W.; Butler, J. N.; Cheung, H. W. K.; Gaines, I.; Garbincius, P. H.; Garren, L. A.; Gottschalk, E.; Kasper, P. H.; Kreymer, A. E.; Kutschke, R.; Bianco, S.; Fabbri, F. L.; Sarwar, S.; Zallo, A.; Cawlfield, C.; Kim, D. Y.; Rahimi, A.; Wiss, J.; Gardner, R.; Chung, Y. S.; Kang, J. S.; Ko, B. R.; Kwak, J. W.; Lee, K. B.; Park, H.; Alimonti, G.; Boschini, M.; Caccianiga, B.; D'Angelo, P.; DiCorato, M.; Dini, P.; Giammarchi, M.; Inzani, P.; Leveraro, F.; Malvezzi, S.; Menasce, D.; Mezzadri, M.; Milazzo, L.; Moroni, L.; Pedrini, D.; Pontoglio, C.; Prelz, F.; Rovere, M.; Sala, A.; Sala, S.; Davenport, T. F., III; Agostino, L.; Arena, V.; Boca, G.; Bonomi, G.; Gianini, G.; Liguori, G.; Merlo, M. M.; Pantea, D.; Ratti, S. P.; Riccardi, C.; Segoni, I.; Viola, L.; Vitulo, P.; Hernandez, H.; Lopez, A. M.; Mendez, H.; Mendez, L.; Mirles, A.; Montiel, E.; Olaya, D.; Paris, A.; Quinones, J.; Rivera, C.; Xiong, W.; Zhang, Y.; Wilson, J. R.; Cho, K.; Handler, T.; Engh, D.; Hosack, M.; Johns, W. E.; Nehring, M.; Sheldon, P. D.; Stenson, K.; Webster, M.; Sheaff, M.

    2001-07-01

    We report the observation of the Cabibbo suppressed decay Ξc+-->pK-π+ using data collected with the FOCUS spectrometer during the 1996-1997 Fermilab fixed target run. We find a Ξc+ signal peak of /202+/-35 events. We have measured the relative branching ratios BR(Ξ+c-->pK- π+)/BR(Ξ+c-->Ξ- π+π+)=0.234+/-0.047+/-0.022 and BR(Ξ+c-- >pK¯*(892)0)/BR(Ξ+c-->pK-π+)=0.54+/-0.09+/-0.05.

  11. [Bibliometric analysis of Revista Médica del IMSS in the Scopus database for the period between 2005-2013].

    Science.gov (United States)

    García-Gómez, Francisco; Ramírez-Méndez, Fernando

    2015-01-01

    To analyze the number of articles of Revista Médica del Instituto Mexicano del Seguro Social (Rev Med Inst Mex Seguro Soc) in the Scopus database and describe principal quantitative bibliometric indicators of scientific publications during the period between 2005 to 2013. Scopus database was used limited to the period between 2005 to 2013. The analysis cover mainly title of articles with the title of Revista Médica del Instituto Mexicano del Seguro Social and its possible modifications. For the analysis, Scopus, Excel and Access were used. 864 articles were published during the period between 2005 to 2013 in the Scopus database. We identified authors with the highest number of contributions including articles with the highest citation rate and forms of documents cited. We also divided articles by subjects, types of documents and other bibliometric indicators which characterize the publications. The use of Scopus brings the possibility of analyze with an external tool the visibility of the scientific production published in the Revista Médica del IMSS. The use of this database also contributes to identify the state of science in México, as well as in the developing countries.

  12. Celebridade, Empreendedora e Estética: Representações das Feminidades na Revista Exame

    Directory of Open Access Journals (Sweden)

    Renata Monteiro Martins

    2017-08-01

    Full Text Available Nosso objetivo é analisar as representações veiculadas na mídia sobre as mulheres no mercado de trabalho, sob a perspectiva do pós-feminismo. Para isso, realizamos uma pesquisa documental na versão eletrônica da Revista Exame, utilizando o método de análise semiótica, conforme proposto por Peirce (2008. Os resultados apontam que, nas representações da revista analisada, as mulheres ocupam diferentes posições dentro das organizações, sendo aquelas bem-sucedidas representadas por mulheres brancas, de classe alta e que, ainda, são vistas como modelos a serem seguidos por aquelas que desempenham funções subalternas. Os resultados apontam ainda que, apesar de encontrar mulheres que conquistaram cargos de alto escalão, a maioria delas lida com a discriminação de gênero e a dupla jornada de trabalho.

  13. Specifiers Properties Information Exchange (SPie): Minimum Building Information Model (BIM) Object Definitions

    Science.gov (United States)

    2013-03-01

    polypropylene - upholsetered Armrest Type UFGS 2.2 n/a Common - Tablet - Cupholder UFGS Section and Date UFGS MAY 2012 12 93 00 SITE...Pipe Hangers, Inserts, Supports UFGS 2.8 n/a ferrous – non-ferrous in MRI suites Valves UFGS 2.9 n/a butterfly – gate – swing check – ball – plug

  14. A SBPC e a informação ambiental no Brasil: o papel da revista Ciência Hoje

    Directory of Open Access Journals (Sweden)

    Antonio Teixeira De Barros

    Full Text Available Analisa u informação ambiental divulgada pela revista Ciência Hoje, editada pela Sociedade Brasileira para o Progresso da Ciência (SBPC, desde o primeiro número da revista até a realização da Eco 92. A divulgação concentra-se nos estudos de avaliação de impactos e efeitos da degradação ambiental e nos temas globais da agenda ecológica. O didatismo é uma das características principais de Ciência Ho je, com o intuito de facilitar a leitura por parte do público leigo.

  15. Niche media and music for the youth: O Mundo é do Brotos and Revista do Rock (1960-1965

    Directory of Open Access Journals (Sweden)

    Marcelo Garson

    2017-07-01

    Full Text Available The purpose of this article is to analize, beetween 1960 and 1965, how the press gave meaning and materiality to the idea of a music for the youth in Brazil. Media outlets such as Revista do Radio – in particular O mundo é dos Brotos, a segment written by Carlos Imperial – and also Revista do Rock, took a fundamental role in denifining the moral, visual and sonic codes that were the basis of a professional niche of popular music available for upcoming singers, enterpreneurs and audience. Through multiple strategies this kind of media gave a simbolic and material shape to a new segment of brazilian popular music.

  16. A figura dos “brasileiros” no jornalismo de revista nacional: o “vexame” na Copa do Mundo 2014 e a inversão nos discursos da revista Época

    Directory of Open Access Journals (Sweden)

    Gabriel de Lima Alves Cortez

    2016-09-01

    Full Text Available O presente artigo tem o objetivo de mostrar como o Brasil e os “brasileiros” aparecem nos discursos do jornalismo de revista nacional – especificamente, nos textos da revista Época, em reportagens sobre a Copa do Mundo de Futebol de 2014 veiculadas durante a realização do megaevento no país. Partiremos de uma concepção intercultural de sociedade (segundo a qual as relações sociais se desenvolvem como processos de negociação de conflitos culturais entre os grupos sociais e nos apoiaremos em conceitos da Análise do Discurso (AD Francesa – como a ideia de “Implícitos”, elaborada por Oswald Ducrot. Deste modo, pretende-se verificar como os discursos de Época apresentam a ideia de “brasileiros” nas reportagens sobre a Copa do Mundo de Futebol de 2014 no Brasil e como, neste discurso, compareceu uma noção (dualista e controvérsa de “ser” nacional – bem como uma ideia positivista de (suposta inferioridade cultural brasileira em relação a países e “culturas” tidos como de “Primeiro Mundo”.

  17. [The Revista médica de Hamburgo. A medical journal as an instrument of German foreign cultural propaganda during the Weimar Republic].

    Science.gov (United States)

    Wulf, Stefan

    2013-01-01

    After the First World War, foreign cultural policy became one of the few fields in which Germany could act relatively free from the restrictions of the Treaty of Versailles. In this context, in 1920 the Hamburg doctors Brauer, Nocht and Mühlens created a monthly medical journal in Spanish (and a bit of Portuguese) for use as an instrument of cultural propaganda, i.e. to increase German influence in Spain and, more importantly, in the countries of Latin America: the Revista médica de Hamburgo (since 1928 Revista médica germano-ibero-americana). The focus of the article is on the protagonists of the Revista project, i.e. the Hamburg doctors, the Cultural Department of the Foreign Office in Berlin, the German pharmaceutical industry, and the publishing houses involved: their conceptions and actions; their correspondence, negotiations, agreements and controversies.

  18. La revista médica más visitada en el portal de ScIELO Perú. Junio 2005

    OpenAIRE

    Mayta, Percy

    2005-01-01

    El Instituto Nacional de Salud (INS) tiene como objetivo producir información relevante para la salud de la población peruana por medio de la investigación, la cual sólo culmina cuando sus resultados son difundidos a través de la publicación. Es por ello que, desde 1942, el INS, a través de su Comité Editor, publica la Revista de Medicina Experimental (RPMESP), que cambió de denominación en el año 2002 a Revista Peruana de Medicina Experimental y Salud Pública, la cual se constituye en el ...

  19. Alienação e engajamento nos quadrinhos: uma leitura possí­vel da revista Chiclete com Banana

    Directory of Open Access Journals (Sweden)

    Waldomiro Vergueiro

    2008-11-01

    Full Text Available Esta resenha apresenta uma avaliação do livro Fantasias e cotidiano nas histórias em quadrinhos, de Nadilson Manoel da Silva, em que o autor discute os quadrinhos adultos brasileiros, particularmente a revista Chiclete com Banana. Palavras-chave histórias em quadrinhos, revistas brasileiras, Chiclete com Banana Abstract This text presents an assessment of the book Fantasias e cotidiano nas histórias em quadrinhos, by Nadilson Manoel da Silva, in which the author discusses Brazilian adult comics, specifically the comic book Chiclete com Banana. Key words comics, Brazilian comic books, Chiclete com Banana

  20. La publicidad en las revistas femeninas y masculinas: reflejo de los estereotipos de género

    Directory of Open Access Journals (Sweden)

    Flora Marín Murillo

    2010-05-01

    Full Text Available A pesar de los esfuerzos que por parte de distintas instituciones se vienen realizando para fomentar políticas de igualdad, la publicidad que se inserta en las revistas femeninas y masculinas sigue reflejando los tradicionales estereotipos de género. Así, los productos que de forma mayoritaria se anuncian en uno y otro soporte difieren notablemente (cosmética, en las publicaciones dirigidas a las mujeres; relojes, en las editadas para hombres. También son distintas las estrategias utilizadas para la presentación de dichos productos. Este artículo se basa en una investigación sobre las revistas femeninas y masculinas en España financiada por el Ministerio de Ciencia e Innovación (referencia CSO2008-02971-E/SOCI.

  1. O passado atual na revista Oroboro

    Directory of Open Access Journals (Sweden)

    Gabriel Santo Vaccaro

    2008-12-01

    Full Text Available A poesia brasileira dos últimos anos do século passado se caracterizou pela possibilidade de revisitar movimentos e pensamentos anteriores sem restrições, pelo fato de rotular-se como moderna sem a problemática que tal termo originava em outros períodos históricos, e pela integração sem inconvenientes nos mercados onde circulava. Nesse mesmo sentido, e referindo especificamente o caso da revista “Oroboro”, pode-se mencionar que nestes primeiros anos do século vinte e um, o revisitar os tempos pretéritos, o rotular-se moderno e a inserção no mercado continuam sendo uma constante. E é particularmente a primeira das três características citadas, o retornar livremente a fontes passadas, a que será refletida com mais profundidade neste trabalho no momento de pensar as oito programações gráficas nas capas da “Oroboro”.

  2. Referência a aprovação de comissão de ética e a consentimento dos doentes na Revista Portuguesa de Pneumologia e noutras revistas médicas portuguesas com fator de impacto

    Directory of Open Access Journals (Sweden)

    M.J. Bernardes

    2012-11-01

    Full Text Available Resumo: Introdução: A referência a aprovação de comissão de ética (CE e a consentimento dos doentes, nas publicações que envolvem humanos, poderá ser inferior à recomendada. Neste artigo, esta situação foi analisada na Revista Portuguesa de Pneumologia e nas outras 2 revistas médicas portuguesas com fator de impacto indexadas na ISI Web of Knowledge. Métodos: A referência a aprovação de CE e a consentimento dos doentes foi pesquisada em todas as publicações que envolveram humanos na Acta Médica Portuguesa, Acta Reumatológica Portuguesa e Revista Portuguesa de Pneumologia, de 1 de julho de 2010 a 30 de junho de 2011. A pesquisa incluiu a avaliação do envolvimento de doentes vulneráveis e potencialmente identificáveis. Resultados: A maior parte das publicações analisadas, que incluíram uma proporção considerável de doentes vulneráveis (23% e de casos clínicos potencialmente identificáveis (14%, foram casos clínicos (49%. Globalmente, a aprovação de CE variou entre 0% e 28%, nos casos clínicos e nos estudos prospetivos, respetivamente, e o consentimento dos participantes entre 0% e 26%. Não se registaram diferenças estatisticamente significativas nos resultados entre as revistas estudadas. Conclusões: A referência a aprovação de CE e a consentimento dos doentes nas 3 revistas médicas portuguesas mais cotadas foi inferior à das suas congéneres mundiais. Estes resultados devem ser tidos em consideração e reavaliados em futuras investigações, tendo em vista a proteção dos participantes e a confiança da sociedade nos procedimentos envolvidos. Abstract: Introduction: Reporting of ethical committee (EC approval and patient consent in publications involving human subjects may be lower than recommended. In this paper this ethical issue was analysed in the Portuguese Journal of Pulmonology and in the other two Portuguese medical journals with impact factor indexed in the ISI Web of Knowledge. Methods

  3. The genus Actiniceps Berk. & Br

    NARCIS (Netherlands)

    Boedijn, K.B.

    1959-01-01

    The genus Actiniceps Berk. & Br. is shown to be a Basidiomycete. Wiesnerina Höhn. and Dimorphocystis Corner are regarded synonymous. The type species A. thwaitesii Berk. & Br. is redescribed with D. capitatus Corner as synonym. The following new combinations are proposed: A. horrida (Höhn.) Boedijn,

  4. Brûlure chez l’épileptique: brûlure pas comme les autres

    Science.gov (United States)

    Boukind, S.; Elatiqi, O.K.; Dlimi, M.; Elamrani, D.; Benchamkha, Y.; Ettalbi, S.

    2015-01-01

    Summary L’association brûlure et épilepsie est une constatation fréquente au Maroc. Ces brûlures, souvent itératives, touchent le plus souvent des femmes jeunes de milieu rural. L’accident survient habituellement au domicile, le plus souvent dans la cuisine à la suite d’une chute sur un moyen de cuisson posé au sol. Elles peuvent être inaugurales de la maladie mais surviennent plus souvent chez des patients connus mais au traitement mal suivi. Les conséquences de ces brûlures, toujours profondes, sont souvent dramatiques en termes de séquelles, chez des patients ayant déjà une insertion sociale rendue difficile par l’épilepsie. La prise en charge doit être multidisciplinaire et concerner à la fois la brûlures et l’épilepsie. Des mesures de prévention simples, visant à équilibrer l’épilepsie et éviter au patient de se trouver seul à proximité d’une source de chaleur, doivent être mises en place. PMID:27252613

  5. http://www.vbgsn.org

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

    http://www.vbgsn.org. LES TIC POUR PREVENIR ET. LUTTER CONTRE LES VBG. GROUPE D'ETUDES ET DE RECHERCHES GENRE ET SOCIETES. Une base technique utilisant des solutions open source. Il s'agit d'une plateforme web et mobile qui permet aux parties prenantes de pouvoir remonter et partager les ...

  6. La Revista "Medicina" en 129 años de Historia de la Academia

    Directory of Open Access Journals (Sweden)

    Alfredo Jácome Roca

    2003-03-01

    Full Text Available

    La fundación de la Sociedad de Medicina y Ciencias Naturales y de la "Revista Médica", su órgano científico desde un principio, fueron la cristalización de unos cambios que comenzaron a gestarse en Europa en cuanto a filosofía y ciencias, cuando empezó a promoverse el acercamiento a la naturaleza por el contacto directo y la experiencia.

    La educación neo-granadina rechazaba lo nuevo y repulsaba lo extraño. En medicina se continuaba concibiendo la enfermedad al estilo hipocrático, como un desequilibrio de los humores aunque en la práctica abundaban los empiricos. Personajes como Mutis y Caldas, el visitante Humboldt, la misión francesa donde participó Boussingault, y la revolución misma de la independencia, empezaron a introducir las ideas positivas procedentes del Viejo Continente, no necesariamente acertadas pero al fin y al cabo novedosas.

    Mutis, como Galileo, creia que la naturaleza es un libro escrito en caracteres matemáticos y pretendía enseñar la manera de descifrarlos. Tal vez fue un visionario del genoma humano de nuestros tiempos.<br />A partir de la Escuela Privada de Medicina de 1864, fundada por el núcleo de profesionales formados en Francia y que se constituyó en el "Cuerpo Médico Colombiano", empezaria a predominar la mentalidad<br />anatomo-clinica que se basaba en trabajos como los de Laennec, Morgagni, Corvisart y otros de la medicina hospitalaria francesa; la enfermedad comenzaría a concebirse como una lesíón anatómica en los órganos - que genera un conjunto de signos y sintomas -, y donde la terapéutica debería estar dirigida a corregir dicha lesión. Antonio Vargas Reyes fue uno de los representantes de esta corriente en nuestro pais y alma intelectual de la Escuela Privada y de la Facultad de Medicina de la Universidad Nacional, de la que fue su primer decano. Pero al mismo tiempo participó en aquellos periódicos médicos pioneros como "La Lanceta", que apareció el 17 de

  7. Reactions of N2O5 with Salty and Surfactant-Coated Glycerol: Interfacial Conversion of Br- to Br2 Mediated by Alkylammonium Cations.

    Science.gov (United States)

    Shaloski, Michael A; Gord, Joseph R; Staudt, Sean; Quinn, Sarah L; Bertram, Timothy H; Nathanson, Gilbert M

    2017-05-18

    Gas-liquid scattering and product-yield experiments are used to investigate reactions of N 2 O 5 with glycerol containing Br - and surfactant ions. N 2 O 5 oxidizes Br - to Br 2 for every solution tested: 2.7 M NaBr, 0.03 M tetrahexylammonium bromide (THABr), 0.03 M THABr + 0.5 M NaBr, 0.03 M THABr + 0.5 M NaCl, 0.03 M THABr + 0.01 M sodium dodecyl sulfate (SDS), and 0.01 M cetyltrimethylammonium bromide (CTABr). N 2 O 5 also reacts with glycerol itself to produce mono- and dinitroglycerin. Surface tension measurements indicate that 0.03 M THABr and 2.7 M NaBr have similar interfacial Br - concentrations, though their bulk Br - concentrations differ by 90-fold. We find that twice as much Br 2 is produced in the presence of THA + , implying that the conversion of Br - to Br 2 is initiated at the interface, perhaps mediated by the charged, hydrophobic pocket within the surface THA + cation. The addition of 0.5 M NaBr, 0.5 M NaCl, or 0.01 M SDS to 0.03 M THABr lowers the Br 2 production rate by 23%, 63%, and 67% of the THABr value, respectively. When CTA + is substituted for THA + , Br 2 production drops to 12% of the THABr value. The generation of Br 2 under such different conditions implies that trace amounts of surface-active alkylammonium ions can catalyze interfacial N 2 O 5 reactions, even when salts and other surfactants are present.

  8. CARACTERÍSTICAS Y EVOLUCIÓN DE LA REVISTA DIDÁCTICA GEOGRÁFICA

    Directory of Open Access Journals (Sweden)

    Rafael Sebastiá Alcaraz

    2011-12-01

    Full Text Available Resumen:El objetivo de este artículo es analizar las características de la revista Didáctica Geográfica. En la evolución de la publicación se distinguen dos etapas. En la primera se aborda la composición del equipo gestor y los fines de la revista. En la segunda, la indagación se ha centrado en cuestiones tanto cuantitativas, como cualitativas. En particular, se han considerado aspectos formales, características de los autores, naturaleza de los contenidos, iconografía utilizada, presencia de las nuevas tecnologías, etc. El propósito es realizar una visión crítica de la revista con el objetivo de potenciar un medio de encuentro de los docentes de la Geografía y la difusión de la investigación educativa y la innovación en la enseñanza de la Geografía.Palabras clave: Análisis, revista, Didáctica Geográfica.Abstract: This article aims to analyse the characteristics of the journal called DidácticaGeográfica (Geography Didactics. Two clearly distinguished stages are seen since itstarted publishing. The first deals with the makeup of its management team and thepurposes of this journal. In the second, research has focused on qualitative andquantitative matters. In particular, formal aspects have been considered; the authors’characteristics, the nature of the contents, the iconography employed, presence of newtechnologies, etc.The purpose here is to provide a critical view of this journal for the purpose ofreinforcing a means of encounter for Geography teachers and to diffuse educationalresearch and innovation in the teaching of Geography.KEY WORDS: Analysis, journal, Didáctica Geográfica.RÉSUMÉ:Nous constatons deux étapes dans l´évolution de la revue DidactiqueGéographique. Notre article vise à analyser les caractéristiques de cette publication ;tout d´abord, nous abordons la composition de l’équipe de gestion et le but de larevue. A partir de cette analyse, le deuxième objectif de la recherche consiste à

  9. Epub (Versión Completa para Tablet y Dispositivos Móviles

    Directory of Open Access Journals (Sweden)

    Revista Epub

    2013-11-01

    Full Text Available Este es la versión electrónica para tablets y dispositivos móbiles de la Revista Calle14 Vol 7 No 9 Revista de investigación en el campo del arte.Usted podrá descargar esta versión E PUB y guardarla en su biblioteca personal. Para descargar el archivo EPUB, consultar el siguiente enlace de SlideShare:http://www.slideshare.net/dimarc/como-descargar-un-archivo-epub-de-la-revista-28209496

  10. Proceso Editorial de la Revista Científica Ciencia Médica

    OpenAIRE

    Zenia Claros Coca

    2013-01-01

    El proceso editorial es una etapa crucial que tiene como objetivo garantizar la calidad y originalidad científica de los trabajos publicados. La Revista Científica Ciencia Médica logra todo este proceso gracias a un trabajo conjunto del comité editorial y al peer – review realizado por revisores expertos en el tema, los cuales llevan a cabo una revisión crítica y valoran el interés de los trabajos remitidos.

  11. Apunts. Educación Física y Deportes (1985-2015. Treinta años en el contexto de las revistas españolas de ciencias de la actividad física y el deporte

    Directory of Open Access Journals (Sweden)

    Javier Olivera Betrán

    2017-06-01

    Full Text Available El objetivo de este trabajo es realizar un análisis de la revista Apunts. Educación Física y Deportes en sus treinta años de ejercicio (1985-2015 en comparación con las revistas españolas de ciencias de la actividad física y el deporte. En este estudio se han desarrollado tres análisis, uno correspondiente a los datos bibliométricos internos de Apunts. Educación Física y Deportes como publicación científica multidisciplinaria de ciencias de la actividad física y el deporte. El segundo, consiste en un análisis multifactorial sobre las treinta revistas españolas del sector con evaluación externa. Y el tercero se centra en un análisis comparativo de la publicación con las revistas multidisciplinarias de su ámbito académico. Se efectuó un análisis comparativo entre las revistas españolas de ciencias de la actividad física y el deporte mediante ocho tipologías diferenciadas y catorce indicadores. La publicación especializada Revista de Psicología del Deporte, seguida de las publicaciones multidisciplinarias Revista Internacional de Medicina y Ciencias de la Actividad Física y el Deporte, Apunts. Educación Física y Deportes y Revista Internacional de Ciencias del Deporte son, por orden, las revistas más valoradas de la muestra y las que presentan mayor potencial. En el análisis comparativo, la revista Apunts. Educación Física y Deportes sobresale junto a la Revista Internacional de Medicina y Ciencias de la Actividad Física y el Deporte en este ámbito específico. Su constante y puntual trayectoria durante treinta años, productividad, accesibilidad y visibilidad, su amplia base de indexación incluidas las tres bases de datos más reconocidas, sus visitas a la web y las descargas de artículos, su dinamismo en internet y buscadores de la red y su estatus como revista de referencia del ámbito de las ciencias de la actividad física y el deporte en España y Latinoamérica son sus fortalezas más destacables.

  12. Revista Eugenio Espejo: alternativa para potenciar la publicación científica en salud

    Directory of Open Access Journals (Sweden)

    Carlos Gafas González

    2016-01-01

    Full Text Available Se realizó una investigación analítica, durante el período marzo-mayo de 2015, con el propósito de desarrollar un plan de acción para estimular la publicación científica entre los docentes de la Facultad de Ciencias de la Salud en la Universidad Nacional de Chimborazo y profesionales del sector a nivel local y regional. La población estuvo constituida por los documentos habilitantes de la Revista Eugenio Espejo, sus siete volúmenes publicados hasta 2014, las normas establecidas para la indexación a sistemas de información científicas internacionales y los 15 artículos pendientes de aprobación y sus respectivos autores de correspondencia. A partir de la revisión de los artículos enviados para su publicación, se detectaron insuficiencias en las habilidades de estos para la redacción científica. La revista necesitó replantear sus normas de publicación y la organización del trabajo para que se cumpliera con los requisitos de las bases del Sistema de Información Científica Latindex y Redaclyc, pues inicialmente solo se cumplían con cinco. El plan de acciones fue diseñado basándose en las necesidades diagnosticadas para el fortalecimiento de dicha revista teniendo en cuenta el desarrollo de la publicación científica en el contexto estudiado.

  13. Diagnóstico del público meta y plan de producción para producir y distribuir gratuitamente en Costa Rica la franquicia de la revista literaria Buensalvaje

    OpenAIRE

    Morales Moya, Mónica

    2014-01-01

    Las revistas de literatura son un espacio de educación, intercambio de ideas, fomento a la lectura, conocimiento y reconocimiento de talentos, entretenimiento y crítica social, política y económica. En el 2014, Costa Rica carece de una revista especializada en este tema, por lo que se propone traer la franquicia de la publicación peruana Buensalvaje. Esta es una revista dedicada a publicar temas del ámbito literario: reseñas, cuentos, poesía, opinión, crónica, semblanzas de autores y te...

  14. Preparation and characterization of (R,S)-[76Br]BrQNB: an analogue of QNB for PET

    International Nuclear Information System (INIS)

    Strijckmans, V.; Loc'h, C.; Ottaviani, M.; Maziere, B.; Lee, K.S.; Zeeberg, B.R.

    1997-01-01

    (R,S)-[ 76 Br]BrQNB was prepared for imaging mAChR by PET . (R,S)QNB was labelled with bromine-76 by electrophilic substitution of the tributylstannyl precursor using peracetic acid as oxidizing agent. The exchange between bromine-76 and the leaving group occurred in 20 min at room temperature. A chemically and radiochemically pure product was obtained with a final radiolabelling yield of 30%. Preliminary evaluation of pharmacological properties was performed in rats. In brain, biodistribution and autoradiography studies showed that the preferential localization of (R,S)-[ 76 Br]BrQNB was m-AChR rich structures. 6 h p.i. the radioactivity uptake in the posterior cortex was 1% ID/g and the striatum to cerebellum radioactivity ratio was 13.5. Metabolite study revealed that the radiotracer remains unchanged in brain for at least 3 h. (Author)

  15. Z-(-,-)-[76Br]BrQNP: a high affinity PET radiotracer for central and cardiac muscarinic receptors

    International Nuclear Information System (INIS)

    Strijckmans, V.; Coulon, C.; Loc'h, C.; Maziere, B.; Luo, H.; McPherson, D.W.; Knapp, F.F.

    1996-01-01

    Racemic E-1-azabicyclo[2.2.2]oct-3-yl α-(1-bromo-1-1-propen-3-yl)-α -hydroxy-α-phenylacetate (BrQNP) was prepared and evaluated in vivo as a potential candidate for imaging muscarinic acetylcholinergic receptors by Positron Emission Tomography. Initial in vivo blocking studies utilizing Z-(-,-)-[ 125 I]IQNP as a radiolabelled muscarinic probe demonstrated that a preinjection of cold E-BrQNP effectively blocks the uptake of the radiolabelled probe in the brain and heart, by 71% and 86% respectively. Z-(-,-)-[ 76 Br]BrQNP was prepared by electrophilic substitution from a tributylstannyl precursor. Peracetic acid and chloramine T was evaluated as oxidizing agents. After purification by SPE and RP-HPLC, radiolabelling yields of 85% and 95% were obtained with peracetic acid and chloramine T, respectively. The final radiochemical yield was 70% for both oxidizing agents. (author)

  16. Dos cuidados com o corpo feminino em reclames na Revista do Globo da década de 1930 Feminine body care ads in the Revista do Globo magazine of the 1930s

    Directory of Open Access Journals (Sweden)

    Joana Carolina Schossler

    2011-04-01

    Full Text Available Desde as primeiras décadas do século XX, a moda dos banhos de mar contribuiu para despir pouco a pouco mulheres, homens e crianças no Rio Grande do Sul (Brasil. As mulheres foram o público-alvo preferencial dos reclames de produtos higiênicos, farmacêuticos, cosméticos e de vestuário. Para o veraneio, uma gama desses produtos foi anunciada na Revista do Globo durante a década de 1930. Com o fito de satisfazer "novos desejos" femininos por meio de novos produtos, esses anúncios permitem uma análise histórica das representações da mulher moderna, principalmente da emergência de um novo corpo feminino. O presente artigo trata da mudança nas representações do feminino na década de 1930, com base na publicidade da revista de maior circulação no Rio Grande do Sul à época.Since the beginning of the 20th century, the habit of going to the beach allowed for the progressive revelation of the bodies of women, men, and children in Rio Grande do Sul (Brasil. Women were the main targets of advertisements for hygiene and pharmaceutical products, cosmetics, and fashion. During the 1930s, a wide variety of such products was advertised in the Revista do Globo magazine. With the aim of satisfying new feminine desires through new products,these advertisements allow for a historical analysis of the representation of the modern woman, especially the birth of a new feminine body. This article discusses the changes in the representation of women, during the 1930s, based on the advertisements which appeared in the most widely read magazine in the state of Rio Grande do Sul at the time.

  17. www.elearnSCI.org

    DEFF Research Database (Denmark)

    Chhabra, H S; Harvey, Lee; Muldoon, S

    2013-01-01

    OBJECTIVE: To develop a web-based educational resource for health professionals responsible for the management of spinal cord injury (SCI). The resource:www.elearnSCI.org is comprised of seven learning modules, each subdivided into various submodules. Six of the seven modules address the educatio......OBJECTIVE: To develop a web-based educational resource for health professionals responsible for the management of spinal cord injury (SCI). The resource:www.elearnSCI.org is comprised of seven learning modules, each subdivided into various submodules. Six of the seven modules address...... the educational needs of all disciplines involved in comprehensive SCI management. The seventh module addresses prevention of SCI. Each submodule includes an overview, activities, self-assessment questions and references. DEVELOPMENT OF THE RESOURCE: Three hundred and thirty-two experts from The International...... Spinal Cord Society (ISCoS) and various affiliated societies from 36 countries were involved in developing the resource through 28 subcommittees. The content of each submodule was reviewed and approved by the Education and Scientific Committees of ISCoS and finally by an Editorial Committee of 23 experts...

  18. Anarquismo y neomalthusianismo: la revista Generación Consciente (1923-1928

    Directory of Open Access Journals (Sweden)

    Navarro Navarro, Francisco Javier

    1997-03-01

    Full Text Available Not available.El análisis de la historia de las relaciones entre el anarquismo español y el movimiento neomalthusiano es el principal objetivo de este artículo. Se centra especialmente en el estudio de una conocida publicación libertaria de los años 20: Generación Consciente (Alcoi y Valencia, 1923-1928, que resultó esencial en el proceso de asimilación y difusión por parte del movimiento anarquista español de las nuevas ideas en torno al neomalthusianismo, la eugenesia y la reforma sexual. Generación Consciente —revista eminentemente cultural y científica— realizó un formidable esfuerzo de divulgación popular de la teoría y la práctica del control de natalidad, desde sus postulados libertarios de búsqueda de una vida digna, armónica y feliz para el proletariado. El ideal de la «maternidad consciente» era el principio inspirador de una campaña desarrollada por los principales colaboradores de la revista, entre los que se contaban también importantes médicos y científicos no vinculados al movimiento libertario, como es el caso de Luis Jiménez de Asúa, Gregorio Marañón o César Juarros.

  19. Resultado de la encuesta sobre el diseño de REDVET

    OpenAIRE

    veterinaria.org

    2005-01-01

    El mes de enero publicamos REDVET en dos diseños diferentes 1) El simple habitual (HTML normal) en http://www.veterinaria.org/revistas/redvet y 2) El HTML con marcos en http://www.veterinaria.org/revistas/redvet/index2.html y os hemos dado la opción de votar por la opción 1) la opción 2) o la opción 3 (si es indiferente) a la vez de poder comentar en el motivo de la opción escogida. Con las respuestas númericas (sin argumentar) a través de la encuesta online desde l...

  20. Cardiology in Brazilian scientific journals: an overview Cardiologia em revistas científicas brasileiras: um panorama

    Directory of Open Access Journals (Sweden)

    Kavita Kirankumar Patel

    2012-06-01

    Full Text Available Cardiology has been and is a very significant fraction of the Brazilian contribution to science. In older days, the most significant part of this work was directed to foreign periodicals, but the quasi-simultaneous emergence of SciELO and PUBMED has ordained a redirection of much of this work to Brazilian periodicals. We here survey some of this more recent contribution for the benefit of readers of Revista Brasileira de Cirurgia Cardiovascular. This is offered as an update. Articles on the general themes of Cardiology and Pneumology published by four ISI Indexed Brazilian journals not specializing in cardiology are re-visited, after a search through 10 journals.A Cardiologia foi, e continua sendo, responsável por uma fracção muito significativa da contribuição brasileira para a ciência. No passado, os trabalhos mais importantes eram direcionados para periódicos estrangeiros, mas o surgimento quase simultâneo do SciELO e PUBMED facilitou um redirecionamento de grande parte desses trabalhos a periódicos brasileiros. Neste artigo, examinamos algumas das contribuições mais recentes em benefício aos leitores da Revista Brasileira de Cirurgia Cardiovascular. Esta discussão é oferecida como uma atualização. Artigos sobre os temas gerais da cardiologia e pneumologia publicados por quatro revistas brasileiras indexadas no ISI - não especializadas em cardiologia - são revistos.

  1. New results for the formation of a muoniated radical in the Mu + Br2 system: a van der Waals complex or evidence for vibrational bonding in Br-Mu-Br?

    Science.gov (United States)

    Fleming, Donald G; Cottrell, Stephen P; McKenzie, Iain; Macrae, Roderick M

    2012-08-21

    New evidence is presented for the observation of a muoniated radical in the Mu + Br(2) system, from μSR longitudinal field (LF) repolarisation studies in the gas phase, at Br(2) concentrations of 0.1 bar in a Br(2)/N(2) mixture at 300 K and at 10 bar total pressure. The LF repolarisation curve, up to a field of 4.5 kG, reveals two paramagnetic components, one for the Mu atom, formed promptly during the slowing-down process of the positive muon, with a known Mu hyperfine coupling constant (hfcc) of 4463 MHz, and one for a muoniated radical formed by fast Mu addition. From model fits to the Br(2)/N(2) data, the radical component is found to have an unusually high muon hfcc, assessed to be ∼3300 MHz with an overall error due to systematics expected to exceed 10%. This high muon hfcc is taken as evidence for the observation of either the Br-Mu-Br radical, and hence of vibrational bonding in this H[combining low line]-L[combining low line]-H[combining low line] system, or of a MuBr(2) van der Waals complex formed in the entrance channel. Preliminary ab initio electronic structure calculations suggest the latter is more likely but fully rigorous calculations of the effect of dynamics on the hfcc for either system have yet to be carried out.

  2. CENAS DE LEITURA DA CIÊNCIA HOJE DAS CRIANÇAS: MODOS DE USO E APROPRIAÇÃO DA REVISTA EM SALA DE AULA

    Directory of Open Access Journals (Sweden)

    Sheila Alves de Almeida

    2018-03-01

    Full Text Available RESUMO: Este trabalho trata dos modos de uso e apropriação da revista Ciência Hoje das Crianças em uma turma de séries iniciais do Ensino Fundamental. A perspectiva teórico-metodológica de análise inspira-se nas concepções de Bakhtin e Vygotsky acerca da interação verbal e na “memória pedagógica” sobre os acontecimentos de sala de aula. As análises apontam que o uso da revista Ciência Hoje das Crianças em sala de aula faz circular a linguagem de divulgação científica. Ressalta-se, a importância da revista nas aulas de Ciências dado o nível de envolvimento das crianças e da professora, a aprendizagem de conteúdos de ciências e a qualidade da participação de todos durante a experiência pedagógica com o periódico. Entretanto, essa postura não é construída espontaneamente e está relacionada, entre outras coisas, ao acesso à revista na sala de aula e à forma como as atividades de ensino foram conduzidas pela professora.

  3. Genomic identification and characterization of the elite strains Bradyrhizobium yuanmingense BR 3267 and Bradyrhizobium pachyrhizi BR 3262 recommended for cowpea inoculation in Brazil.

    Science.gov (United States)

    Leite, Jakson; Passos, Samuel Ribeiro; Simões-Araújo, Jean Luiz; Rumjanek, Norma Gouvêa; Xavier, Gustavo Ribeiro; Zilli, Jerri Édson

    2017-03-31

    The leguminous inoculation with nodule-inducing bacteria that perform biological nitrogen fixation is a good example of an "eco-friendly agricultural practice". Bradyrhizobium strains BR 3267 and BR 3262 are recommended for cowpea (Vigna unguiculata) inoculation in Brazil and showed remarkable responses; nevertheless neither strain was characterized at species level, which is our goal in the present work using a polyphasic approach. The strains presented the typical phenotype of Bradyrhizobium with a slow growth and a white colony on yeast extract-mannitol medium. Strain BR 3267 was more versatile in its use of carbon sources compared to BR 3262. The fatty acid composition of BR 3267 was similar to the type strain of Bradyrhizobium yuanmingense; while BR 3262 was similar to Bradyrhizobium elkanii and Bradyrhizobium pachyrhizi. Phylogenetic analyses based on 16S rRNA and three housekeeping genes placed both strains within the genus Bradyrhizobium: strain BR 3267 was closest to B. yuanmingense and BR 3262 to B. pachyrhizi. Genome average nucleotide identity and DNA-DNA reassociation confirmed the genomic identification of B. yuanmingense BR 3267 and B. pachyrhizi BR 3262. The nodC and nifH gene analyses showed that strains BR 3267 and BR 3262 hold divergent symbiotic genes. In summary, the results indicate that cowpea can establish effective symbiosis with divergent bradyrhizobia isolated from Brazilian soils. Published by Elsevier Editora Ltda.

  4. Stig Brøgger's Artists' Books

    DEFF Research Database (Denmark)

    Ørum, Tania; Hvis Kromann, Thomas

    Introduction and presentation of the many artist's books made by the Danish artist Stig Brøgger......Introduction and presentation of the many artist's books made by the Danish artist Stig Brøgger...

  5. UV-Induced Anisotropy In CdBr2-CdBr2: Cu Nanostructures

    Directory of Open Access Journals (Sweden)

    El-Naggar A. M.

    2015-09-01

    Full Text Available We have found an occurrence of anisotropy in the nanostructure CdBr2-CdBr2: Cu nanocrystalline films. The film thickness was varied from 4 nm up to 80 nm. The films were prepared by successive deposition of the novel layers onto the basic nanocrystals. The detection of anisotropy was performed by occurrence of anisotropy in the polarized light at 633 nm He-Ne laser wavelength. The occurrence of anisotropy was substantially dependent on the film thickness and the photoinduced power density. Possible mechanisms of the observed phenomena are discussed.

  6. ["Revista Médica de Chile": 120 years (July 1872-July 1992)].

    Science.gov (United States)

    Costa-Casaretto, C

    1992-07-01

    The "Revista Medica de Chile" founded in 1872 is the second oldest medical journal in Latin America after the "Gaceta Medica de Mexico" (1864). Among medical journals in the world it is placed 24. It has been published monthly without interruption, except for the period January through December 1891, due to the revolution taking place at that time. The first Editor was German Schneider, a German physician from Bonn who came to Chile in 1850 with the immigrants that settled in the South.

  7. Finding the Missing Stratospheric Br(sub y): A Global Modeling Study of CHBr3 and CH2Br2

    Science.gov (United States)

    Liang, Q.; Stolarski, R. S.; Kawa, S. R.; Nielsen, J. E.; Douglass, A. R.; Rodriguez, J. M.; Blake, D. R.; Atlas, E. L.; Ott, L. E.

    2010-01-01

    Recent in situ and satellite measurements suggest a contribution of 5 pptv to stratospheric inorganic bromine from short-lived bromocarbons. We conduct a modeling study of the two most important short-lived bromocarbons, bromoform (CHBr3) and dibromomethane (CH2Br2), with the Goddard Earth Observing System Chemistry Climate Model (GEOS CCM) to account for this missing stratospheric bromine. We derive a "top-down" emission estimate of CHBr3 and CH2Br2 using airborne measurements in the Pacific and North American troposphere and lower stratosphere obtained during previous NASA aircraft campaigns. Our emission estimate suggests that to reproduce the observed concentrations in the free troposphere, a global oceanic emission of 425 Gg Br yr(exp -1) for CHBr3 and 57 Gg Br yr(exp -l) for CH2Br2 is needed, with 60% of emissions from open ocean and 40% from coastal regions. Although our simple emission scheme assumes no seasonal variations, the model reproduces the observed seasonal variations of the short-lived bromocarbons with high concentrations in winter and low concentrations in summer. This indicates that the seasonality of short-lived bromocarbons is largely due to seasonality in their chemical loss and transport. The inclusion of CHBr3 and CH2Br2 contributes 5 pptv bromine throughout the stratosphere. Both the source gases and inorganic bromine produced from source gas degradation (BrSLS) in the troposphere are transported into the stratosphere, and are equally important. Inorganic bromine accounts for half (2.5 pptv) of the bromine from the inclusion of CHBr3 and CHzBr2 near the tropical tropopause and its contribution rapidly increases to 100% as altitude increases. More than 85% of the wet scavenging of Br(sub y)(sup VSLS) occurs in large-scale precipitation below 500 hPa. Our sensitivity study with wet scavenging in convective updrafts switched off suggests that Br(sub y)(sup SLS) in the stratosphere is not sensitive to convection. Convective scavenging only

  8. Corpo, saúde e beleza: representações sociais nas revistas femininas

    Directory of Open Access Journals (Sweden)

    Denise Siqueira

    2008-09-01

    Full Text Available Com base em uma visão transdisciplinar, o objetivo deste artigo é refletir sobre o modo como a mídia impressa representa e propaga conceitos de corpo feminino saudável. Foram feitas leituras de estudos sobre corpo e consultas aos arquivos da Biblioteca Nacional do Rio de Janeiro. Seis revistas brasileiras voltadas para o público feminino – da segunda metade do século XX e início do XXI – foram selecionadas para ilustrar as mudanças nos conceitos de corpo saudável e na abordagem desses conceitos. Palavras-chave: Revistas femininas; representações sociais; corpo; cultura. Abstract From a transdisciplinary perspective, the objective of this article is to ponder about the way the printing-press represents and propagates concepts of women’s healthy bodies. Readings of studies about the body were made as well as consultations to the archives of the Biblioteca Nacional do Rio de Janeiro (Rio de Janeiro National Library. Six Brazilian magazines written for women – published during the 20th century and the beginning of the 21st century – were chosen to exemplify the changes in the concepts of healthy body. Keywords: Women’s magazines; social representations; body; culture.

  9. A Revista Illustração Pelotense como Objeto Biográfico

    Directory of Open Access Journals (Sweden)

    Vivian Herzog

    2012-09-01

    Full Text Available O presente artigo tem como objeto as memórias de descendentes de mulheres retratadas na revista Illustração  Pelotense. Dessa forma partiu-se do pressuposto de que para essas “herdeiras” das representadas o periódico apresenta um caráter simbólico que muitas vezes auxilia na forma que elas elaboram e atualizam o seu passado. Essa proposta de estudo considera uma  inter -relação entre os registros fotográficos da revista e a história oral coletada a partir dos relatos das depoentes.PALAVRAS-CHAVE:  Objetos biográficos, Illustração Pelotense, fotografia e memória.ABSTRACT:  This article presents the memories of descendants of women portrayed in the magazine Illustração Pelotense. For these "heirs" of represented the publication presents a symbolic character who often helps in the way they prepare and update its past. This study consider the inter-relationship between the photographic records of the magazine and oral history collected from reports of women.KEY-WORKS:  biographic objects, Illustração Pelotense, fotographic records and memory.

  10. Teoria, conhecimento e pragmática da comunicação: o paradigma pulsional

    Directory of Open Access Journals (Sweden)

    Potiguara Mendes da Silveira Jr.

    2015-12-01

    Full Text Available Parte-se do estado da arte feito por Muniz Sodré (2012a sobre a abordagem acadêmica do campo comunicacional e a dificuldade para defini-lo em seu aspecto "científico". No intuito de prospectar além dos paradigmas identificados por Sodré (o sociológico, dos efeitos; e o semiótico, dos códigos, propõe-se o paradigma pulsional que orienta a Transformática, teoria psicanalítica da comunicação. PALAVRAS-CHAVE: Teorias da comunicação; Conhecimento; Psicanálise.   ABSTRACT According to the state of the art - made by Muniz Sodré (2012a - of  the academic approach of the communication field, there is a great difficulty in defining this field as "scientific". In order to examine beyond the two paradigms depicted by Sodré (sociological and semiotic this paper exposes the "drive (Freud: Trieb paradigm" which is the basis of Transformatics, the psychoanalytical theory of communication. KEYWORDS: Communication theories; Knowledge; Psychoanalysis.   RESUMEN Se inicia con el estado de la técnica hecha por Muniz Sodré (2012a en el enfoque académico del campo de la comunicación y la dificultad de definirla en su aspecto "científico". Con el fin de perspectiva más allá de los paradigmas identificados por Sodre (la sociológicos, los efectos y los semióticos, códigos, se propone paradigma instintivo que guía Transformática, la teoría psicoanalítica de la comunicación.  PALABRAS CLAVE: Teorías de la Comunicación; conocimiento; Psicoanálisis.   Referências ALONSO, Aristides. Aspectos do verbo Haver e seu uso na Nova Psicanálise. TranZ: Revista dos Estudos Transitivos do Contemporâneo, v. 5, 2010. Acessar: http://www.tranz.org.br/5_edicao/TranZ10-Aristides-VerboHaver-RevMD.pdf CUSA, Nicolau de. [1514] Deus é visto para lá da coincidência dos contraditórios e o seu ver é ser. In: A visão de Deus. Lisboa: Gulbenkian, 1988. p. 168-171 FREUD, S. [1930] Mal-estar na Civilização. ESB, vol. XXI. Rio de Janeiro: Imago, 1976

  11. Publicación de artículos originales desde el pregrado en una revista médica colombiana entre 1994-2004

    OpenAIRE

    Harry Mauricio Pachajoa-Londoño

    2006-01-01

    Objetivos: Evidenciar la presencia de la participación estudiantil dentro de la publicación de artículos originales en una revista médica colombiana; entre 1994 al 2004. Material y métodos: Estudio observacional, descriptivo y transversal, se realizó una búsqueda y revisión manual de; todos los artículos originales publicados en la revista Colombia Médica durante el periodo 1994-2004, se ordenaron según año, tipo de autoría:; profesional de la salud, estudiantes de pregrado o era de ...

  12. [Analysis of the continuity, circulation and productivity of the Revista Española de Quimioterapia].

    Science.gov (United States)

    Gimeno Sieres, E

    2007-06-01

    The primary objective of this study was to compare some of the bibliometric indicators of the continuity, circulation and productivity of the Revista Espanola de Quimioterapia up to 2003 with other spanish journals of Pharmacy and Pharmacology. This was done by reviewing periodicals directories, such as the ISSN (International Standard Serial Number/Número Internacional Normalizado de Publicaciones Seriadas) and ULRICH'S (Periodicals Directory), as well as the CDU (Classification Universal Decimal), national and international databases including IME (Indice Médico Español), ICYT (Indice Espanol de Ciencia y Tecnologia), IPA (International Pharmaceutical Abstracts), SCI Expanded (Science Citation Index Expanded), MEDLINE (Index Medicus), EMBASE (Excerpta Medica), BIOSIS PREVIEWS, ANALYTICAL ABSTRACTS, FSTA (Food Science and Technology Abstracts), SCIFINDER SCHOLAR and CHEMISTRY CITATION INDEX. According to the results, the Revista Española de Quimioterapia, in publication for 15 years, is widely distributed and has a good rating among other scientific journals of the same discipline.

  13. Effect of initial microstructure on the microstructural evolution and mechanical properties of Ti during cold rolling

    International Nuclear Information System (INIS)

    Stolyarov, V.V.; Zhu, Y.T.; Raab, G.I.; Zharikov, A.I.; Valiev, R.Z.

    2004-01-01

    Ultrafine-grained (UFG) Ti rods were produced via cold rolling UFG and coarse-grained (CG) Ti stocks. The initial UFG stock was produced via equal channel angular pressing. It was found that the initial UFG structure had beneficial influence on the mechanical properties of the cold-rolled Ti rods. Compared with Ti rods with initial CG microstructure, the Ti rods with the initial UFG microstructure have both higher strength and higher ductility after being cold rolled to varying strains. Transmission electron microscopy revealed that the Ti rods with the initial UFG microstructure had finer, more homogeneous microstructures after cold rolling. This study demonstrates the merit of UFG Ti processed by ECAP for further shaping and forming into structural components with superior mechanical properties

  14. Imbedded Nanocrystals of CsPbBr3 in Cs4 PbBr6 : Kinetics, Enhanced Oscillator Strength, and Application in Light-Emitting Diodes.

    Science.gov (United States)

    Xu, Junwei; Huang, Wenxiao; Li, Peiyun; Onken, Drew R; Dun, Chaochao; Guo, Yang; Ucer, Kamil B; Lu, Chang; Wang, Hongzhi; Geyer, Scott M; Williams, Richard T; Carroll, David L

    2017-11-01

    Solution-grown films of CsPbBr 3 nanocrystals imbedded in Cs 4 PbBr 6 are incorporated as the recombination layer in light-emitting diode (LED) structures. The kinetics at high carrier density of pure (extended) CsPbBr 3 and the nanoinclusion composite are measured and analyzed, indicating second-order kinetics in extended and mainly first-order kinetics in the confined CsPbBr 3 , respectively. Analysis of absorption strength of this all-perovskite, all-inorganic imbedded nanocrystal composite relative to pure CsPbBr 3 indicates enhanced oscillator strength consistent with earlier published attribution of the sub-nanosecond exciton radiative lifetime in nanoprecipitates of CsPbBr 3 in melt-grown CsBr host crystals and CsPbBr 3 evaporated films. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  15. A história da Brigada Militar pelas páginas da Revista Pindorama = The history of the Military Brigade through the pages of Revista Pindorama

    Directory of Open Access Journals (Sweden)

    Silva, Amanda Siqueira da

    2014-01-01

    Full Text Available A revista Pindorama surgiu nos últimos anos do Borgismo no Rio Grande do Sul, num período de crise do Partido Republicano Rio-grandense e de transformações políticas no país. A revista surgiu dentro da Brigada Militar, com apoio de seu comandante, entretanto esta era uma publicação particular de dois tenentes, na qual tinham a intencionalidade de relembrar os grandes feitos militares da Instituição, demonstrando uma preocupação para que a história da BM não fosse esquecida, assim como também reforçava o compromisso da BM com a ideologia do PRR. A Brigada Militar foi criada em 1892 e desde então foi mantenedora da hegemonia política do PRR no Rio Grande do Sul, atuou em defesa destes na Revolução Federalista (1893, na Revolta Assisista (1923 e contra os levantes Tenentistas (1924 até 1926. Durante sua formação, recebeu uma missão de instrução militar pelo Exército Nacional, o que depois levou a uma proximidade grande entre as Forças, a Brigada Militar recebeu forte aparelhamento bélico, o que possibilitou que esta se tornasse um Exército regional com diversas atuações em prol do ideário republicano castilhista

  16. Porcentaje de artículos altamente citados: una medida comparable del impacto de revistas entre campos científicos

    Directory of Open Access Journals (Sweden)

    González-Betancor, Sara M.

    2015-09-01

    Full Text Available Currently the two most used bibliometric indicators for evaluating scholarly journals are the impact factor and the h-index. However, both indicators vary heavily depending on the scientific field, restricting comparability. In addition, the impact factor is not robust in dealing with articles with a large number of citations, while the h-index is dependent on the size of the journal. These limitations, when comparing journals of different sizes and fields, make it necessary to look to other journal impact factors that can be comparable between scientific fields, that are independent of the journal size, and that are also robust in the presence of items with a high number of citations. An alternative index is based on the percentage of highly cited articles in a journal. This paper empirically compares such an index with the impact factor and the h-index by using different time windows and levels of citation that can determine when a document can be considered as highly cited compared to others of the same year and discipline. The main outcome of this comparison suggests that the best index for obtaining data distributions that are comparable between scientific fields is by taking the 20% citation percentile over a three-year time frame for considering citations.Actualmente, los dos indicadores bibliométricos más empleados en la evaluación de revistas científicas son el índice de impacto y el índice h. Sin embargo, ambos indicadores dependen fuertemente del campo científico, lo que los hace no comparables entre campos. Además, el índice de impacto no es robusto a la presencia de artículos con un gran número de citas, mientras que el índice h depende del tamaño de la revista. Estas limitaciones a la hora de comparar revistas de diferentes tamaños y campos hace necesario considerar al mismo tiempo otros indicadores de impacto para revistas que sí puedan ser comparables entre campos, no dependan del tamaño de la revista y sean adem

  17. High energy XeBr electric discharge laser

    Science.gov (United States)

    Sze, Robert C.; Scott, Peter B.

    1981-01-01

    A high energy XeBr laser for producing coherent radiation at 282 nm. The XeBr laser utilizes an electric discharge as the excitation source to minimize formation of molecular ions thereby minimizing absorption of laser radiation by the active medium. Additionally, HBr is used as the halogen donor which undergoes harpooning reactions with Xe.sub.M * to form XeBr*.

  18. Revista Latina de Comunicación Social's thematic 1998-2008

    Directory of Open Access Journals (Sweden)

    Dr. Raymond Colle

    2009-01-01

    Full Text Available With more than ten years of life, Revista Latina de Comunicación Social has become an important showcase of thought and of Ibero-American research in the field of social communication. Retrieving the keywords or, failing that, the titles of articles published, we have analyzed the issues covered and their evolution. The methodology is based on statistics of words (originals, of the conceptual discussed and the coocurrences of these fields in the description of each article fields in which they were regrouped to identify the topics. Through eleven years, attention was most payed on the press, journalism, television and new digital technologies (Internet.Con más de diez años de vida, Revista Latina de Comunicación Social se ha transformado en una importante muestra del pensamiento y de la investigación iberoamericana en materia de comunicación social. Recuperando las palabras clave o, en su defecto, los títulos de los artículos publicados, hemos analizado la temática cubierta y su evolución. La metodología se basa en estadísticas: de palabras (originales, de los campos conceptuales en que se han de reagrupar para aislar los temas tratados y de las coocurrencias de dichos campos en la descripción de cada artículo. En los once años transcurridos, la atención se ha dirigido principalmente hacia la prensa y el periodismo, la televisión y las nuevas tecnologías digitales (Internet.

  19. El peer review de las revistas científicas en Humanidades y Ciencias Sociales: políticas y prácticas editoriales declaradas

    Directory of Open Access Journals (Sweden)

    Tavares de Matos Cardoso, María Manuela

    2011-06-01

    Full Text Available The main objective of this article is an analysis of editorial practices and policies concerning peer review from 79 international scientific journals in Arts and Humanities and Social Sciences, based on statements found on these journals’ own Web sites. The information sources used to identify and select each journal were the databases of Web of Science, in particular Arts & Humanities Citation Index and Social Sciences Citation Index. The analysis checked 30 parameters structured in a Data Collection Sheet (DCS, which were taken from the revised assessment criteria proposed by Delgado and others (2007. In general, these journals have a low average of reported informational parameters. Of all the journals that make up the Humanities’ area, informational parameters about peer review editorial practices mentioned average 5.6 %. As for the 58 journals comprising the Social Sciences, their average for the cited parameters was 9.7 %. We conclude this study by providing a range of measures for their improvement and further alignment with the patterns of scholarly communication.Este artículo tiene como objetivo principal el análisis de las prácticas y las políticas editoriales de peer review de 79 revistas científicas internacionales de Humanidades y Ciencias Sociales, tomando como punto de partida las declaraciones que expresan estas revistas en sus propias páginas. Las fuentes de información consultadas para identificar y seleccionar cada revista fueron las bases de datos de Web of Science, en particular las bases de Arts & Humanities Citation Index y el Social Sciences Citation Index. El análisis comprueba la presencia de 30 parámetros informativos sobre el peer review que se extraen de los criterios de evaluación propuestos en la obra de referencia La edición de revistas científicas: directrices, criterios y modelos de evaluación. En general, las revistas estudiadas poseen un promedio bajo de parámetros informativos declarados

  20. BrO measurements over the Eastern North-Atlantic

    Directory of Open Access Journals (Sweden)

    U. Platt

    2009-12-01

    Full Text Available The aim of the work presented here was to detect BrO in the marine boundary layer over the Eastern North-Atlantic by Multi AXis-Differential Optical Absorption Spectroscopy (MAX-DOAS of scattered sunlight. With this technique, information about the concentration and the vertical profile of trace gases in the atmosphere can be gained. BrO can be formed in the marine atmosphere by degradation of biogenic organohalogens or by oxidation of bromide in sea salt aerosol. BrO influences the chemistry in marine air in many ways, e.g. since it catalytically destroys ozone, changes the NO2/NO-ratio as well as the OH/HO2-ratio and oxidises DMS. However, the abundance and the significance of BrO in the marine atmosphere is not yet fully understood. <br>> We report on data collected during a ship cruise, which took place along the West African Coast in February 2007, within the framework of the Surface Ocean PRocesses in the ANthropocene project (SOPRAN. Tropospheric BrO could be detected during this cruise at peak mixing ratios of (10.2±3.7 ppt at an assumed layer height of 1 km on 18 February 2007. Furthermore, it was found that the mean BrO concentrations increased when cruising close to the African Coast suggesting that at least part of the BrO might have originated from there.

  1. The dynamics of the Hg + Br2 reaction: elucidation of the reaction mechanism for the Br exchange reaction.

    Science.gov (United States)

    Jambrina, P G; Menéndez, M; Aoiz, F J

    2017-06-28

    In spite of its importance in the Hg atmospheric chemistry, the dynamics of the Hg + Br 2 → HgBr + Br reaction is poorly understood. In this article, we have carried out a comprehensive study of the reaction mechanism of this reaction by means of quasiclassical trajectories (QCTs) on an existing ab initio potential energy surface (PES). The reaction has a non trivial dynamics, as a consequence of its large endothermicity, the presence of a deep potential well, and the competition between the Br exchange and the collision induced dissociation processes. Our calculations demonstrate that insertion is only relevant at energies just above the reaction threshold and that, at energies above 2.3 eV, HgBr formation typically takes place via a sort of frustrated dissociation. In order to compare directly with the results obtained in extensive cross molecular beam experiments for the homologous reaction with I 2 , angular distributions in the laboratory frame for Hg + Br 2 have been simulated under similar experimental conditions. The lack of agreement at the highest energies considered suggests that either the two reactions have substantially different mechanisms or that calculations on a single PES cannot account for the dynamics at those energies.

  2. Rashba split surface states in BiTeBr

    International Nuclear Information System (INIS)

    Eremeev, S V; Rusinov, I P; Nechaev, I A; Chulkov, E V

    2013-01-01

    Within density functional theory, we study the bulk band structure and surface states of BiTeBr. We consider both ordered and disordered phases, which differ in atomic order in the Te–Br sublattice. On the basis of relativistic ab initio calculations, we show that the ordered BiTeBr is energetically preferable as compared with the disordered one. We demonstrate that both Te- and Br-terminated surfaces of the ordered BiTeBr hold surface states with a giant spin–orbit splitting. The Te-terminated surface-state spin splitting has Rashba-type behavior with the coupling parameter α R ∼ 2 eVÅ. (paper)

  3. Brominated methanes as photoresponsive molecular storage of elemental Br2.

    Science.gov (United States)

    Kawakami, Kazumitsu; Tsuda, Akihiko

    2012-10-01

    The photochemical generation of elemental Br(2) from brominated methanes is reported. Br(2) was generated by the vaporization of carbon oxides and HBr through oxidative photodecomposition of brominated methanes under a 20 W low-pressure mercury lamp, wherein the amount and situations of Br(2) generation were photochemically controllable. Liquid CH(2)Br(2) can be used not only as an organic solvent but also for the photoresponsive molecular storage of Br(2), which is of great technical benefit in a variety of organic syntheses and in materials science. By taking advantage of the in situ generation of Br(2) from the organic solvent itself, many organobromine compounds were synthesized in high practical yields with or without the addition of a catalyst. Herein, Br(2) that was generated by the photodecomposition of CH(2)Br(2) retained its reactivity in solution to undergo essentially the same reactions as those that were carried out with solutions of Br(2) dissolved in CH(2)Br(2) that were prepared without photoirradiation. Furthermore, HBr, which was generated during the course of the photodecomposition of CH(2)Br(2), was also available for the substitution of the OH group for the Br group and for the preparation of the HBr salts of amines. Furthermore, the photochemical generation of Br(2) from CH(2)Br(2) was available for the area-selective photochemical bleaching of natural colored plants, such as red rose petals, wherein Br(2) that was generated photochemically from CH(2)Br(2) was painted onto the petal to cause radical oxidations of the chromophoric anthocyanin molecules. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  4. Zn2(TeO3Br2

    Directory of Open Access Journals (Sweden)

    Mats Johnsson

    2008-05-01

    Full Text Available Single crystals of dizinc tellurium dibromide trioxide, Zn2(TeO3Br2, were synthesized via a transport reaction in sealed evacuated silica tubes. The compound has a layered crystal structure in which the building units are [ZnO4Br] distorted square pyramids, [ZnO2Br2] distorted tetrahedra, and [TeO3E] tetrahedra (E being the 5s2 lone pair of Te4+ joined through sharing of edges and corners to form layers of no net charge. Bromine atoms and tellurium lone pairs protrude from the surfaces of each layer towards adjacent layers. This new compound Zn2(TeO3Br2 is isostructural with the synthetic compounds Zn2(TeO3Cl2, CuZn(TeO32, Co2(TeO3Br2 and the mineral sophiite, Zn2(SeO3Cl2.

  5. On the electrodeposition of /sup 80m/Br, /sup 80/Br and /sup 82/Br species from (eta, gamma) activated dibromoethane - N,N-dimethyl aniline mixture

    International Nuclear Information System (INIS)

    Zaman, M.R.

    1997-01-01

    Thermal neutron activation have been carried out in dibromomethane (DBM)-n,n-dimethyl aniline (N,N-DMA) system and the /sup 80m/Br, /sup 82/Br species have been electrodeposited on Ag/AgBr electrodes under a constant electric field of 175 volts cm/sup -1/. With the addition of N,N-DMA, anodic deposition has been severely decreased for all the radiobromines and cathode plate shows zero activities. Results are critically discussed by explaining the chemical reactivity of the amine. Electrode deposition pattern and the chemical stabilization mode of the nucleogenic bromine species in this system are deduced to some extents. (author)

  6. Inventario bibliográfico de la revista "Finlay" (1963-1967)

    OpenAIRE

    López Espinosa, José Antonio; Beldarraín Chaple, Enrique

    2009-01-01

    Entre las primicias más importantes del Museo Histórico de las Ciencias Médicas "Carlos J. Finlay" desde su creación en 1962, figura la puesta en circulación, al año siguiente, de su órgano oficial, la revista Finlay, en cuyas páginas se dieron a conocer durante cerca de un lustro interesantes trabajos relativos a la historia de la ciencia en general y de la Medicina cubana en particular. En esta contribución se ofrecen detalles sobre los rasgos formales más significativos de la mencionada pu...

  7. Solution-Grown CsPbBr3 /Cs4 PbBr6 Perovskite Nanocomposites: Toward Temperature-Insensitive Optical Gain.

    Science.gov (United States)

    Wang, Yue; Yu, Dejian; Wang, Zeng; Li, Xiaoming; Chen, Xiaoxuan; Nalla, Venkatram; Zeng, Haibo; Sun, Handong

    2017-09-01

    With regards to developing miniaturized coherent light sources, the temperature-insensitivity in gain spectrum and threshold is highly desirable. Quantum dots (QDs) are predicted to possess a temperature-insensitive threshold by virtue of the separated electronic states; however, it is never observed in colloidal QDs due to the poor thermal stability. Besides, for the classical II-VI QDs, the gain profile generally redshifts with increasing temperature, plaguing the device chromaticity. Herein, this paper addresses the above two issues simultaneously by embedding ligands-free CsPbBr 3 nanocrystals in a wider band gap Cs 4 PbBr 6 matrix by solution-phase synthesis. The unique electronic structures of CsPbBr 3 nanocrystals enable temperature-insensitive gain spectrum while the lack of ligands and protection from Cs 4 PbBr 6 matrix ensure the thermal stability and high temperature operation. Specifically, a color drift-free stimulated emission irrespective of temperature change (20-150 °C) upon two-photon pumping is presented and the characteristic temperature is determined to be as high as ≈260 K. The superior gain properties of the CsPbBr 3 /Cs 4 PbBr 6 perovskite nanocomposites are directly validated by a vertical cavity surface emitting laser operating at temperature as high as 100 °C. The results shed light on manipulating optical gain from the advantageous CsPbBr 3 nanocrystals and represent a significant step toward the temperature-insensitive frequency-upconverted lasers. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  8. Corpo e masculinidade na revista VIP Exame Body and masculinity in the magazine VIP Exame

    Directory of Open Access Journals (Sweden)

    Marko Monteiro

    2001-01-01

    Full Text Available Nesse artigo elaboro comentários teóricos acerca de novas formas de se vivenciar a corporalidade presentes contemporaneamente, a partir da análise da revista masculina VIP Exame. O texto baseia-se numa pesquisa que incluiu uma observação dentro da redação da revista e análise de materiais impressos, centrando-se na forma como a revista aborda o corpo masculino e coloca a preocupação com a aparência como importante para uma masculinidade bem sucedida. Com base nestes dados busco avaliar, a partir de perspectivas feministas e sobre o corpo, a influência do valor dado ao corpo e ao seu monitoramento reflexivo na constituição de identidades de gênero.In this article I elaborate theoretical comments on the subject of corporeality and the new forms of experiencing the body that are present in contemporary times. On the basis of a research with a Brazilian men's magazine, VIP Exame, which involved the analysis of issues of the magazine as well as an observation of the working process of the reporters and journalists, I focus my comments on the way the masculine body is treated by the magazine and how a discourse emerges on masculinity where attention to "good looks" becomes an important feature of a successful masculinity. On the basis of these observations I go on to discuss feminist and other theories of the subject, in order to understand how the reflexive monitoring of the body is increasingly important in the constitution of gender identities.

  9. The Revista Médica project: medical journals as instruments of German foreign cultural policy towards Latin America, 1920-1938 O projeto Revista Médica: periódicos médicos como instrumentos da política cultural externa alemã para a América Latina, 1920-1938

    Directory of Open Access Journals (Sweden)

    Stefan Wulf

    2013-03-01

    Full Text Available After the First World War, foreign cultural policy became one of the few fields in which Germany could act with relative freedom from the restrictions imposed by the Treaty of Versailles. In this context the Hamburg doctors Ludolph Brauer, Bernhard Nocht and Peter Mühlens created the Revista Médica de Hamburgo (as of 1928 Revista Médica Germano-Ibero-Americana, a monthly medical journal in Spanish (and occasionally in Portuguese, to increase German influence especially in Latin American countries. The focus of this article is on the protagonists of this project, the Hamburg doctors, the Foreign Office in Berlin, the German pharmaceutical industry, and the publishing houses involved.Depois da Primeira Guerra Mundial, a política cultural externa tornou-se um dos poucos campos em que a Alemanha podia atuar com relativa liberdade das restrições impostas pelo Tratado de Versalhes. Nesse contexto, os médicos Ludolph Brauer, Bernhard Nocht e Peter Mühlens, de Hamburgo, criaram a Revista Médica de Hamburgo (a partir de 1928 Revista Médica Germano-Ibero-Americana, um periódico mensal em espanhol (e ocasionalmente em português, para aumentar a influência alemã principalmente nos países da América Latina. O foco desse artigo são os protagonistas desse projeto: os médicos de Hamburgo, o Ministério das Relações Exteriores, a indústria farmacêutica alemã e as editoras.

  10. 248 nm photolysis of CH2Br2 by using cavity ring-down absorption spectroscopy: Br2 molecular elimination at room temperature.

    Science.gov (United States)

    Wei, Pei-Ying; Chang, Yuan-Ping; Lee, Wei-Bin; Hu, Zhengfa; Huang, Hong-Yi; Lin, King-Chuen; Chen, K T; Chang, A H H

    2006-10-07

    Following photodissociation of CH2Br2 at 248 nm, Br2 molecular elimination is detected by using a tunable laser beam, as crossed perpendicular to the photolyzing laser beam in a ring-down cell, probing the Br2 fragment in the B 3Piou+ -X 1Sigmag+ transition. The nascent vibrational population is obtained, yielding a population ratio of Br2(v = 1)Br2(v = 0) to be 0.7 +/- 0.2. The quantum yield for the Br2 elimination reaction is determined to be 0.2 +/- 0.1. Nevertheless, when CH2Br2 is prepared in a supersonic molecular beam under cold temperature, photofragmentation gives no Br2 detectable in a time-of-flight mass spectrometer. With the aid of ab initio potential energy calculations, a plausible pathway is proposed. Upon excitation to the 1B1 or 3B1 state, C-Br bond elongation may change the molecular symmetry of Cs and enhance the resultant 1 1,3A'-X 1A' (or 1 1,3B1-X 1A1 as C2v is used) coupling to facilitate the process of internal conversion, followed by asynchronous concerted photodissociation. Temperature dependence measurements lend support to the proposed pathway.

  11. Características de los trabajos publicados sobre las propiedades de las plantas en revistas médicas peruanas

    Directory of Open Access Journals (Sweden)

    Oscar G. Pamo-Reyna

    2009-07-01

    Full Text Available Objetivo. Determinar las características de los trabajos originales sobre las propiedades de las plantas publicadas en revistas médicas peruanas. Material y métodos. Se revisó las bases de datos bibliográficas SciELO Perú y SISBIB para el período 2004-2008. Resultados. En 14 revistas se halló 825 trabajos originales, de los cuales 45 fueron incluidos en el estudio. El número de trabajos por años fue 3 (2004, 5 (2005, 9 2006, 13 (2007 y 15 (2008. Las revistas que publicaron mayor proporción de artículos sobre plantas fueron revistas de facultades de medicina: Rev Med Vallejiana (33%, Horizonte Médico (29% y An Fac Med (13%. Las instituciones que más publicaron fueron la Universidad Nacional Mayor de San Marcos (45,5%, Universidad San Martín de Porres (22% y Universidad Nacional de Trujillo (13%. De un total de 226 autores, 11 de ellos realizaron el 22,1% de la producción total. De 57 plantas estudiadas, las más investigadas fueron Lepidium sp. (maca, Croton palanostigma (sangre de grado, Calophyllum brasiliense (lagarto caspi y Smallanthus sonchifolius (yacón. Los potenciales usos más estudiados fueron nutritivos, antineoplásicos, antioxidante, hipoglicemiante e hipotensor arterial. Seis (13,3% trabajos fueron clínicos y el resto fue de tipo experimental o bioquímico. Conclusión. La producción científica médica relacionada con las propiedades de las plantas y publicada es escasa aunque creciente, se realiza en las universidades públicas y privadas, la participación privada es casi nula; y, existe una élite de investigadores que gran producción de trabajos.

  12. Análisis bibliométrico de la revista Medicina y Seguridad del Trabajo durante el periodo 2007-2012

    Directory of Open Access Journals (Sweden)

    Daniel Velázquez López

    2013-12-01

    Full Text Available Introducción: Se realiza un análisis bibliométrico de la revista Medicina y Seguridad del Trabajo para conocer los principales indicadores de producción científica en cuanto a visibilidad, tipología documental, autoría, referencias bibliográficas y citas. Materiales y métodos: Estudio bibliométrico transversal y temporal con análisis de tendencias durante el periodo comprendido entre 2007 y 2012. Los datos se obtienen de SciELO y de la propia revista. El tratamiento de datos se realiza mediante un estudio de frecuencias y porcentajes para los datos cualitativos y utilizando medias y desviaciones estándar en el caso de los cuantitativos. Resultados: El número de artículos originales y de revisión se mantienen con datos similares a los del quinquenio anterior. El índice de cooperación, 3 autores por artículo, es similar al descrito en otros trabajos. El número de referencias bibliográficas por artículo aumenta a partir de 2009 y se mantiene estable posteriormente. El porcentaje de artículos procedentes de Latinoamérica supone el 34% de los publicados. Discusión: Se observa un incremento del número de artículos originales del 50% aunque es inferior al descrito en otros estudios. El número de referencias bibliográficas medias por artículo es inferior al máximo recomendado en las normas de publicación de la revista. Durante los últimos años se detecta un fuerte impulso de la revista en lo que se refiere tanto a indicadores cuantitativos como a cualitativos.

  13. O passado atual na revista Oroboro

    Directory of Open Access Journals (Sweden)

    Gabriel Santo Vaccaro

    2008-10-01

    Full Text Available http://dx.doi.org/10.5007/1984-784x.2008v8n12p17 A poesia brasileira dos últimos anos do século passado se caracterizou pela possibilidade de revisitar movimentos e pensamentos anteriores sem restrições, pelo fato de rotular-se como moderna sem a problemática que tal termo originava em outros períodos históricos, e pela integração sem inconvenientes nos mercados onde circulava. Nesse mesmo sentido, e referindo especificamente o caso da revista “Oroboro”, pode-se mencionar que nestes primeiros anos do século vinte e um, o revisitar os tempos pretéritos, o rotular-se moderno e a inserção no mercado continuam sendo uma constante. E é particularmente a primeira das três características citadas, o retornar livremente a fontes passadas, a que será refletida com mais profundidade neste trabalho no momento de pensar as oito programações gráficas nas capas da “Oroboro”.

  14. Performance of LiAlloy/Ag(2)CrO(4) Couples in Molten CsBr-LiBr-KBr Eutectic

    International Nuclear Information System (INIS)

    GUIDOTTI, RONALD A.; REINHARDT, FREDERICK W.

    1999-01-01

    The performance of Li-alloy/CsBr-LiBr-KBr/Ag(sub 2)CrO(sub 4) systems was studied over a temperature range of 250 C to 300 C, for possible use as a power source for geothermal borehole applications. Single cells were discharged at current densities of 15.8 and 32.6 mA/cm(sup 2) using Li-Si and Li-Al anodes. When tested in 5-cell batteries, the Li-Si/CsBr-LiBr-KBr/Ag(sub 2)CrO(sub 4) system exhibited thermal runaway. Thermal analytical tests showed that the Ag(sub 2)CrO(sub 4) cathode reacted exothermically with the electrolyte on activation. Consequently, this system would not be practical for the envisioned geothermal borehole applications

  15. Structure and luminescence of α and β ThBr4: optical properties of U4+ in α ThBr4

    International Nuclear Information System (INIS)

    Simoni, E.

    1988-05-01

    The aim of this work is to understand the comparative structural and intrinsic luminescence properties of the pure matrices α and β - ThBr 4 , and to study the electronic structure by optical spectroscopy of the U 4+ ion in the α-ThBr 4 matrix. 1)Under U.V. excitation, βThBr 4 is intensively fluorescent in the blue-purple and α-ThBr 4 is fluorescent in the red. The main results concerning β-ThBr 4 are the following: -the optical absorption in the U.V. is under the form of a sudden absorption front and for a same temperature, its threshold energy has the same value as the threshold energy of the excitation function and of the photocurrent peak; -the intensity and the life time of the emission decrease when the temperature increases from 300 K until 400 K ( extinction temperature). All the obtained results have been explained either with the molecular orbitals levels of the ThBr 8 4- cluster or with the valence and conduction bands of the pure matrix. 2)The absorption and emission spectra of U 4+ in α-ThBr 4 (in which U 4+ has a point symmetry S 4 ) obtained between 300 K and 4.2 K have allowed to index 30 levels. The calculation of the spectroscopic parameters F k , ξ and B k q has been carried out in symmetry D 2d and S 4 . The comparison of these parameters with those calculated for U 4+ in β-ThBr 4 and β-ThCl 4 show that the global force of the crystalline field is practically the same in the three matrices, but that the structure transformation β→α occurs more on the values of these B k q than on the change of the ligands Br - →Cl - . On the other hand, it has been possible with the α-ThBr 4 matrix, or the β-ThBr 4 and the β-ThCl 4 , to observe the fluorescence spectra of the U 4+ ion (particularly weak phonons energies). (O.M.)

  16. Health Policy on the pages of Revista de Saúde Pública.

    Science.gov (United States)

    Bousquat, Aylene; Tanaka, Oswaldo Yoshimi

    2016-11-10

    We carried out a narrative review of the scientific production in the area of Policy, Planning and Management in Revista de Saúde Pública (RSP), between 1967 and 2015. All the fascicles of RSP, in the period, were accessed via SciELO platform, which provides all articles online. We selected and classified the articles according to the main topics of scientific production in the area of Policy, Planning and Management. Revista de Saúde Pública has published 343 articles on this subject, with significant growth in the last two decades. The most discussed topics were Health Economics, Primary Health-care, Access and Use of Health Services, and Evaluation of Services and Programs. In the last decade, the topics of Policy and Access to Medicines and Public-Private Relationship, including judicialization, gained importance. The pages of RSP embraced the vast and diverse production of Policy, Planning and Management in its first 50 years, contributing to the consolidation of the area in Brazil. RESUMO Foi realizada revisão narrativa da produção científica do campo de Política, Planejamento e Gestão veiculada na Revista de Saúde Pública (RSP), entre 1967 e 2015. Todos os fascículos da RSP, no período, foram acessados via plataforma SciELO, que disponibiliza todos os artigos online. Foram selecionados e classificados os artigos segundo os principais temas da produção científica da área de Política, Planejamento e Gestão. Foram publicados 343 artigos, com crescimento expressivo nas últimas duas décadas. Economia da Saúde, Atenção Primária à Saúde, Acesso e Utilização de Serviços de Saúde e Avaliação de Serviços e Programas foram os temas mais abordados. Na última década, os temas Política e Acesso a Medicamentos e Relação Público-Privado, incluindo a judicialização, ganharam importância. As páginas da RSP abrigaram vasta e diversa produção de Política, Planejamento e Gestão nos seus primeiros 50 anos, contribuindo para

  17. Revista Brasileira de Ciências do Esporte: dificuldades, desafios e dilemas da editoração científica

    Directory of Open Access Journals (Sweden)

    Alexandre Fernandez Vaz

    2014-12-01

    Full Text Available O artigo discute desafios, dificuldades e dilemas da editoração de periódicos científicos, a partir da experiência como editores da Revista Brasileira de Ciências do Esporte (RBCE. Problematiza a necessidade da internacionalização da produção do conhecimento e dos periódicos nacionais, um imperativo que se apresenta aos editores das revistas na atualidade, questão fortemente vinculada às expectativas de progresso na pós-graduação. Aponta vicissitudes desse quadro para uma área de intervenção e procura mostrar suas ambiguidades no que se refere às más condutas acadêmicas.

  18. Revista de Saúde Pública in scientific publications on Violence and Health (1967-2015).

    Science.gov (United States)

    Schraiber, Lilia Blima; Barros, Claudia; d'Oliveira, Ana Flávia Pires Lucas; Peres, Maria Fernanda Tourinho

    2016-11-10

    This article retrieved the publications from the Revista de Saúde Pública journal (from 1967 to 2015) on violence and health, on the SciELO and PubMed bases, by searching for the terms "violence", "suicide", "aggression", "bullying", and "external causes", registered in any part of the text. We found 130 articles (the first one published in 1974). We observed: increase of publications over time, with decrease in the last five years; similar production volume in lethal and non-lethal violence; later publication of the latter; few studies in qualitative research; mostly descriptive production; and visualization of the problem more by the acts than by contexts or motivations and aggressors. Social markers were little approached, appearing, from largest to smallest frequency, social class, gender, race/ethnicity, and generation. Human rights were little used and only recently used as analytical framework, connected more to gender than to social class. Although Revista de Saúde Pública has registered the theme in its publications, consolidating it as scientific production line, there is still great explanatory theoretical rarefaction and little intersectionality between violence, social inequalities, and human rights. RESUMO A produção da Revista de Saúde Pública (de 1967 até 2015) sobre violência e saúde foi recuperada nas bases SciELO e PubMed utilizando-se os termos "violência", "suicídio", "agressões", "bullying" e "causas externas", registrados em qualquer parte do texto. Foram encontrados 130 artigos (o primeiro deles publicado em 1974). Constatou-se: aumento das publicações no tempo, com decréscimo nos últimos cinco anos; volume similar de produção em violência letal e não letal; publicação mais tardia desta última; poucos estudos em pesquisa qualitativa; produção majoritariamente descritiva; e visibilização do problema, mais pelos atos que pelos contextos ou motivações e agressores. Os marcadores sociais foram pouco tematizados

  19. Chemical consequences of radioactive decay. 1. Study of 249Cf ingrowth into crystalline 249BkBr3: a new crystalline phase of CfBr3

    International Nuclear Information System (INIS)

    Young, J.P.; Haire, R.G.; Peterson, J.R.; Ensor, D.D.; Fellows, R.L.

    1980-01-01

    Spectrophotometric and x-ray powder diffraction methods have been applied to a study of the ingrowth of californium-249 by β - decay of berkelium-249 in crystalline 249 BkBr 3 . It was found that the Cf daughter grows in with the same oxidation state and crystal structure as the parent. Thus, six-coordinate BkBr 3 (AlCl 3 -type monoclinic structure) generates six-coordinate CfBr 3 , and eight-coordinate BkBr 3 (PuBr 3 -type orthorhombic structure) generates eight-coordinate CfBr 3 , a previously unknown form of CfBr 3 . It was also found that the daughter Cf(III) in the BkBr 3 parent compound can be reduced to Cf(II) by treatment with H 2 , as it can in pure CfBr 3 . 5 figures

  20. Zn2(TeO3)Br2

    Science.gov (United States)

    Zhang, Dong; Johnsson, Mats

    2008-01-01

    Single crystals of dizinc tellurium dibromide trioxide, Zn2(TeO3)Br2, were synthesized via a transport reaction in sealed evacuated silica tubes. The compound has a layered crystal structure in which the building units are [ZnO4Br] distorted square pyramids, [ZnO2Br2] distorted tetra­hedra, and [TeO3 E] tetra­hedra (E being the 5s 2 lone pair of Te4+) joined through sharing of edges and corners to form layers of no net charge. Bromine atoms and tellurium lone pairs protrude from the surfaces of each layer towards adjacent layers. This new compound Zn2(TeO3)Br2 is isostructural with the synthetic compounds Zn2(TeO3)Cl2, CuZn(TeO3)2, Co2(TeO3)Br2 and the mineral sophiite, Zn2(SeO3)Cl2. PMID:21202162

  1. O trabalho social da publicidade: um estudo na Revista do Globo

    Directory of Open Access Journals (Sweden)

    Maria Castro

    2008-09-01

    Full Text Available Este trabalho analisa os anúncios sobre produtos que tinham como enfoque a saúde, discutindo as relações possíveis entre as matérias jornalísticas e o discurso publicitário na formação do imaginário e na práxis cotidiana. A análise aborda as pioneiras iniciativas da publicidade riograndense, em escala de massa, ao anunciar medicamentos para a cura de doenças graves, desempenhando importante papel no campo social. Publicidade e saúde são temas que nunca saem de moda e, quando transformados em um só, permitem repensar os fatores que influenciaram a qualidade de vida do homem moderno. Palavras-chave: Saúde pública; publicidade; jornalismo; imaginário popular; Revista do Globo. ABSTRACT This paper analyzes the commercials of products that focused on health, discussing the possible relationships between journalistic articles and advertising discourse, in the formation of the imaginary and in everyday practice. This analysis covers the pioneer initiatives of publicity in the state of Rio Grande do Sul, in mass scale, in advertising medicines for the cure of serious diseases, playing important part in the social field. Publicity and health are themes that will never become outdated and, when merged into one, they allow us to rethink the factors that have influenced today’s quality of life. Keywords: Public health; publicity; journalism; popular imaginary; Revista do Globo.

  2. Synthesis and Biological Evaluation of (S)-Amino-2-methyl-4-[(76)Br]bromo-3-(E)-butenoic Acid (BrVAIB) for Brain Tumor Imaging.

    Science.gov (United States)

    Burkemper, Jennifer L; Huang, Chaofeng; Li, Aixiao; Yuan, Liya; Rich, Keith; McConathy, Jonathan; Lapi, Suzanne E

    2015-11-12

    The novel compound, (S)-amino-2-methyl-4-[(76)Br]bromo-3-(E)-butenoic acid (BrVAIB, [(76)Br]5), was characterized against the known system A tracer, IVAIB ([(123)I]8). [(76)Br]5 was prepared in a 51% ± 19% radiochemical yield with high radiochemical purity (≥98%). The biological properties of [(76)Br]5 were compared with those of [(123)I]8. Results showed that [(76)Br]5 undergoes mixed amino acid transport by system A and system L transport, while [(123)I]8 had less uptake by system L. [(76)Br]5 demonstrated higher uptake than [(123)I]8 in DBT tumors 1 h after injection (3.7 ± 0.4% ID/g vs 1.5 ± 0.3% ID/g) and also showed higher uptake vs [(123)I]8 in normal brain. Small animal PET studies with [(76)Br]5 demonstrated good tumor visualization of intracranial DBTs up to 24 h with clearance from normal tissues. These results indicate that [(76)Br]5 is a promising PET tracer for brain tumor imaging and lead compound for a mixed system A and system L transport substrate.

  3. Synthesis and structure of [(NH2)2CSSC(NH2)2]2[OsBr6]Br2 . 3H2O

    International Nuclear Information System (INIS)

    Rudnitskaya, O. V.; Kultyshkina, E. K.; Stash, A. I.; Glukhova, A. A.; Venskovskii, N. U.

    2008-01-01

    The complex [(NH 2 ) 2 CSSC(NH 2 ) 2 ] 2 [OsBr 6 ]Br 2 . 3H 2 O is synthesized by the reaction of K 2 OsBr 6 with thiocarbamide in concentrated HBr and characterized using electronic absorption and IR absorption spectroscopy. Its crystal structure is determined by X-ray diffraction. The crystals are orthorhombic, a = 11.730(2) A, b = 14.052(3) A, c = 16.994(3) A, space group Cmcm, and Z = 4. The [OsBr 6 ] 2- anionic complex has an octahedral structure. The Os-Br distances fall in the range 2.483-2.490 A. The α,α'-dithiobisformamidinium cation is a product of the oxidation of thiocarbamide. The S-S and C-S distances are 2.016 and 1.784 A, respectively. The H 2 O molecules, Br - ions, and NH 2 groups of the cation are linked by hydrogen bonds.

  4. Revistas internacionales de enfermería: comunidad científica hispanoportuguesa (año 2002 International journals nursing: Spanish-Portuguese scientific community (year 2002

    Directory of Open Access Journals (Sweden)

    Alberto Gálvez Toro

    2005-11-01

    Full Text Available Objetivo: Determinar la existencia de revistas internacionales de enfermería en el área iberoamericana. Métodos: Estudio bibliográfico, longitudinal retrospectivo, basado en el análisis de la autoría de artículos de 33 revistas de enfermería del área ligüística del español y del portugués. Para el estudio del carácter internacional de las publicaciones se usó un doble criterio simultáneamente: la colaboración internacional, definida como la publicación de artículos de autoría extranjera; y la Repercusión Inmediata CUIDEN® (Rci para el año de estudio, entendida ésta como un marcador del consumo visible y actual que una comunidad internacional hace de una revista científica. Resultados: El índice de colaboración internacional fue del 6%, con un grupo de 14 revistas sin colaboración y un núcleo de siete revistas con un valor igual o mayor al 15%. Tres revistas cumplieron el doble criterio para considerar su carácter internacional: Index de Enfermería, Desarrollo Científico de Enfermería y Gerokomos, aunque es posible definir un núcleo con mayor alcance. Conclusiones: Ninguna de las 33 revistas tiene un alcance universal en el área iberoamericana, ya sea desde el punto de vista del consumo, de su citación o de la colaboración internacional. Se puede definir para el año 2002 un pequeño núcleo de revistas con carácter internacional para el área de estudio: Index de Enfermería (Esp, Investigación y Educación en Enfermería (Col, Gerokomos (Esp, Desarrollo Científico de Enfermería (Méx, Revista de Enfermería del IMSS (Méx. Es obvia, no obstante, la inmadurez del área iberoamericana desde el punto de vista de la colaboración internacional.Objective: to determine the existence of international nursing magazines in the Latin American area. Methods: longitudinal, bibliographical, retrospective study based on the analysis of the responsibility of articles of 33 nursing magazines from the Spanish and

  5. Perspectiva histórica de la Revista Científica Ciencia Médica: un proceso de evolución continua

    OpenAIRE

    Karla P. Romero-Ledezma

    2011-01-01

    La Revista Científica Ciencia Médica inició su edición el año 1997 a fin de incentivar a estudiantes de pregrado a difundir el producto de sus investigaciónes, a través de un medio impreso, siendo una de las primeras revistas científicas de pregrado adoptando la revisión por pares. La idea que nace en el seno de la Sociedad Científica de Estudiantes de Medicina (SCEM) de la Universidad Mayor de San Simón (UMSS), con la que se conformó un comité editorial y un comité revisor-asesor. Se publica...

  6. Ranking de artículos más leídos de la URACCAN publicados en sus revistas electrónicas con acceso abierto

    Directory of Open Access Journals (Sweden)

    Juan Francisco Perera Lumbí

    2013-12-01

    Full Text Available Este estudio muestra el ranking de los artículos más leídos de la Revista Ciencia e Interculturalidad y la Revista Universitaria Caribe; así ha inducir una reflexión interna en las universidades nicaragüenses, con énfasis en la Universidad de las Regiones Autónomas de la Costa Caribe Nicaragüense (URACCAN, sobre las ventajas de la difusión de resultados de investigaciones desde las revistas electrónicas tanto en el uso de acceso abierto y de software de código abierto como Open Journal Systems (OJS.Entre los resultados sobresalen: i La revista digital Ciencia e Interculturalidad Incorporada en el Portal de Revistas Nacionales de Nicaragua, Portal del Sistema Regional de Información en Línea para revistas científicas de América Latina, el Caribe y Portugal (Latindex y en el portal de Latin American Journals Online (Lamjol. ii Ciencia e Interculturalidad, en Latin American Jornal online (Lamjol recibió un total de 53,757 visitas desde marzo 2011 a octubre 2013; en el Portal de Revistas de Nicaragua recibió un total de 12,522 visitas en revisión a resúmenes y 13,881 para revisar o descargar artículo completo en PDF, del 2012 a noviembre del 2013; y en el Portal de Revistas de URACCAN recibió un total de 18,661 visitas para revisar resúmenes y 32,254 para revisar o descargar artículo completo en pdf, durante junio 2011 a octubre  2013. iii. El Consejo Nicaragüense de Ciencia y Tecnología de Nicaragua (CONICYT, entregó en noviembre del 2013, un reconocimiento a la revista “por su esfuerzo en elevar la calidad y aplicación de los criterios de LATINDEX y lograr visibilidad de la producción científica de Nicaragua en LAMJOL”. SummaryThis study shows the ranking of the most read articles in the Science and Interculturality Magazine and the Caribbean University Magazine, which induce and brought across an internal reflection within Nicaraguan universities, with emphasis on the University of the Autonomous Regions of the

  7. PENYEBARAN INFORMASI MENGGUNAKAN WWW (WORLD WIDE WEB

    Directory of Open Access Journals (Sweden)

    Ika Atman Satya

    2011-12-01

    Full Text Available Media Informasi secara tradisional telah kita kenai dengan menggunakan koran, televisi, radio dan buku referensi. Media informasi tersebut untuk penyebarannya memerlukan penunjang agar informasi tersebut dapat disebarkan secara lutis. Selain penggunaan media tradisional tersebut penyebaran informasi dengan menggunakan jaringan komputer Internet juga berkembang. Salah satu cara penyebaran informasi dengan menggunakan aplikasi WWW (World Wide Web yang mempunyai kemampuan menggabungkan gambar, text dan suara secara interaktif. Pada tulisan ini akan dibahas tentang kemampuan, penggunaan dan pengembangan server WWW.

  8. Fatigue crack propagation in UFG Ti grade 4 processed by severe plastic deformation

    Czech Academy of Sciences Publication Activity Database

    Fintová, Stanislava; Arzaghi, M.; Kuběna, Ivo; Kunz, Ludvík; Sarrazin-Baudoux, C.

    2017-01-01

    Roč. 98, MAY (2017), s. 187-194 ISSN 0142-1123 R&D Projects: GA MŠk(CZ) LQ1601; GA MŠk LM2015069 Institutional support: RVO:68081723 Keywords : Titanium * Fatigue * Crack growth * Crack closure * Equal channel angular processing Subject RIV: JL - Materials Fatigue, Friction Mechanics OBOR OECD: Audio engineering, reliability analysis Impact factor: 2.899, year: 2016 http://www.sciencedirect.com/science/article/pii/S014211231730035X

  9. Irradiation techniques at BR2 reactor

    International Nuclear Information System (INIS)

    Hebel, W.

    1978-01-01

    Since 1963 the material testing reactor BR2 at Mol is operated for the realisation of numerous research programs and experiments on the behavior of materials under nuclear radiation and in particular under intensive neutron exposure. During this period special irradiation techniques and experimental devices were developed according to the desiderata of the different experiments and to the irradiation possibilities offered at BR2. The design and the operating characteristics of quite a number of those irradiation rigs of proven reliability may be used or can be made available for new irradiation experiments. A brief description is given of some typical irradiation devices designed and constructed by CEN/SCK, Technology and Energy Dpt. They are compiled according to their main use for the different research and development programs realized at BR2. Their eventual application however for different objectives could be possible. A final chapter summarizes the principal irradiation conditions offered by BR2 reactor. (author)

  10. La multimodalidad en revistas electrónicas gestionadas por el Open Journal Systems (OJS desde la perspectiva de la semiótica social

    Directory of Open Access Journals (Sweden)

    Leila Rachel Barbosa Alexandre

    2017-09-01

    Full Text Available Este artículo tiene como objetivo analizar, teniendo en cuenta la perspectiva de la Semiótica Social, la organización multimodal de revistas académicas electrónicas producidas y gestionadas por el Open Journal Systems (OJSa partir de los cuatro dominios relacionados con la construcción de significados de textos multimodales: discurso, diseño, producción y distribución. Debido a este objetivo, se toma como base teórica, principalmente, Kress y Van Leeuwen (2001, 2006 y Kress (2003, 2015 y se analizan, así como ejemplares de esas revistas electrónicas, la información contenida en el manual que se ocupa del uso del OJS. En vista del análisis realizado, se observó una fuerte influencia de las ideologías de la comunidad de discurso académico y sus prácticas tradicionales en medio impreso en la orquestación multimodal de las revistas analizadas.

  11. Molecular characterization of BrMYB28 and BrMYB29 paralogous transcription factors involved in the regulation of aliphatic glucosinolate profiles in Brassica rapa ssp. pekinensis.

    Science.gov (United States)

    Baskar, Venkidasamy; Park, Se Won

    2015-07-01

    Glucosinolates (GSL) are one of the major secondary metabolites of the Brassicaceae family. In the present study, we aim at characterizing the multiple paralogs of aliphatic GSL regulators, such as BrMYB28 and BrMYB29 genes in Brassica rapa ssp. pekinensis, by quantitative real-time PCR (qRT-PCR) analysis in different tissues and at various developmental stages. An overlapping gene expression pattern between the BrMYBs as well as their downstream genes (DSGs) was found at different developmental stages. Among the BrMYB28 and BrMYB29 paralogous genes, the BrMYB28.3 and BrMYB29.1 genes were dominantly expressed in most of the developmental stages, compared to the other paralogs of the BrMYB genes. Furthermore, the differential expression pattern of the BrMYBs was observed under various stress treatments. Interestingly, BrMYB28.2 showed the least expression in most developmental stages, while its expression was remarkably high in different stress conditions. More specifically, the BrMYB28.2, BrMYB28.3, and BrMYB29.1 genes were highly responsive to various abiotic and biotic stresses, further indicating their possible role in stress tolerance. Moreover, the in silico cis motif analysis in the upstream regulatory regions of BrMYBs showed the presence of various putative stress-specific motifs, which further indicated their responsiveness to biotic and abiotic stresses. These observations suggest that the dominantly expressed BrMYBs, both in different developmental stages and under various stress treatments (BrMYB28.3 and BrMYB29.1), may be potential candidate genes for altering the GSL level through genetic modification studies in B. rapa ssp. pekinensis. Copyright © 2015. Published by Elsevier SAS.

  12. Theoretical study and rate constant calculation for the reactions of SH (SD) with Cl2, Br2, and BrCl.

    Science.gov (United States)

    Wang, Li; Liu, Jing-Yao; Li, Ze-Sheng; Sun, Chia-Chung

    2005-01-30

    The mechanisms of the SH (SD) radicals with Cl2 (R1), Br2 (R2), and BrCl (R3) are investigated theoretically, and the rate constants are calculated using a dual-level direct dynamics method. The optimized geometries and frequencies of the stationary points are calculated at the MP2/6-311G(d,p) and MPW1K/6-311G(d,p) levels. Higher-level energies are obtained at the approximate QCISD(T)/6-311++G(3df, 2pd) level using the MP2 geometries as well as by the multicoefficient correlation method based on QCISD (MC-QCISD) using the MPW1K geometries. Complexes with energies less than those of the reactants or products are located at the entrance or the exit channels of these reactions, which indicate that the reactions may proceed via an indirect mechanism. The enthalpies of formation for the species XSH/XSD (X = Cl and Br) are evaluated using hydrogenation working reactions method. By canonical variational transition-state theory (CVT), the rate constants of SH and SD radicals with Cl2, Br2, and BrCl are calculated over a wide temperature range of 200-2000 K at the a-QCISD(T)/6-311++G(3df, 2pd)//MP2/6-311G(d, p) level. Good agreement between the calculated and experimental rate constants is obtained in the measured temperature range. Our calculations show that for SH (SD) + BrCl reaction bromine abstraction (R3a or R3a') leading to the formation of BrSH (BrSD) + Cl in a barrierless process dominants the reaction with the branching ratios for channels 3a and 3a' of 99% at 298 K, which is quite different from the experimental result of k3a'/k3' = 54 +/- 10%. Negative activation energies are found at the higher level for the SH + Br2 and SH + BrCl (Br-abstraction) reactions; as a result, the rate constants show a slightly negative temperature dependence, which is consistent with the determination in the literature. The kinetic isotope effects for the three reactions are "inverse". The values of kH/kD are 0.88, 0.91, and 0.69 at room temperature, respectively, and they increase

  13. Reactor BR2: Introduction

    International Nuclear Information System (INIS)

    Gubel, P.

    2000-01-01

    The BR2 reactor is still SCK-CEN's most important nuclear facility. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. A safety audit was conduced by the IAEA, the conclusions of which demonstrated the excellent performance of the plant in terms of operational safety. In 1999, the CALLISTO facility was extensively used for various programmes involving LWR pressure vessel materials, IASCC of LWR structural materials, fusion reactor materials and martensic steels for use in ADS systems. In 1999, BR2's commercial programmes were further developed

  14. O CORPO DO PODER: estudo semiótico da figura de Lula na campanha presidencial de 1989 nas revistas semanais Veja e Istoé

    Directory of Open Access Journals (Sweden)

    José Luiz Aidar Prado

    2008-12-01

    Full Text Available Este texto examina as construções semióticas da figura do presidente Lula nas reportagens de capa das revistas semanais Veja e IstoÉ durante a campanha presidencial de 1989. O corpus é constituído pelas reportagens de capa com foco temático na apresentação do perfil de Lula. A mídia semanal é ela própria um dos atores no cenário do debate político: ao atuar performativamente, ela exerce uma prática política como observador julgador. Ao estudar os modos de construção da imagem de Lula nas campanhas eleitorais, comparando-os com os do outro candidato (Collor-89, este texto também buscará identificar os modos pelos quais a mídia semanal se faz presente na sociedade contemporânea e os procedimentospersuasivos (estratégias verbais, visuais e sincréticas usadospara “influenciar” os leitores, com base nos julgamentos que elaarbitra. Para tanto, com base em análise semiótica, estudaremos os diferentes mecanismos enunciativos empregados na produção de tais discursos. Examinaremos, assim, as figuras do Outro evocadas na construção de Lula, especificando as formas de sentenciamento midiático incorporadas em certos pontos nodais, conforme definição de Laclau. Quais são as oposições construídas na divisão do campo político, efetivadas nas reportagens centradas nas personalidades dos atores em disputa? Como se delineia o campo político com base na oposição entre as personalidades de Lula e Collor, como discursivizadas pela mídia? Falamos de Lula-Outro para marcar a outridade estabelecida nessa construção de oposições caracterizada por categorias de separação entre Mesmo e Outro, direita e esquerda, cultura popular e de elite, sindicalismo e socialdemocracia etc. Este estudo é parte da pesquisa “A invenção do Mesmo e do Outro na mídia semanal”(ver projetos concluídos, pg. 2, no site www.pucsp.br/pos/cos/umdiasetedias, que construiu um DVD em hipermídia, com o objetivo de apoiar professores naeduca

  15. Ab Initio Potential Energy Surfaces for Both the Ground (X̃1A′ and Excited (A∼1A′′ Electronic States of HSiBr and the Absorption and Emission Spectra of HSiBr/DSiBr

    Directory of Open Access Journals (Sweden)

    Anyang Li

    2012-01-01

    Full Text Available Ab initio potential energy surfaces for the ground (X̃1A′ and excited (A˜A′′1 electronic states of HSiBr were obtained by using the single and double excitation coupled-cluster theory with a noniterative perturbation treatment of triple excitations and the multireference configuration interaction with Davidson correction, respectively, employing an augmented correlation-consistent polarized valence quadruple zeta basis set. The calculated vibrational energy levels of HSiBr and DSiBr of the ground and excited electronic states are in excellent agreement with the available experimental band origins. In addition, the absorption and emission spectra of HSiBr and DSiBr were calculated using an efficient single Lanczos propagation method and are in good agreement with the available experimental observations.

  16. Artículos científicos sobre turismo para personas con discapacidad en revistas Iberoamericanas de turismo. Una propuesta de categorización

    OpenAIRE

    José Jonathan Ibarra Coronel; Alexandre Panosso Netto

    2016-01-01

    El turismo para personas con discapacidad es un campo poco trabajado en revistas científicas sobre turismo publicadas en Iberoamérica. Además de ser escasos los artículos sobre el tema, no existe un consenso en cuanto a la forma de abordarlo, pues en su origen, los conceptos de discapacidad, accesibilidad y turismo poseen más discrepancias que consensos. El presente trabajo tiene como objetivo categorizar artículos sobre turismo para personas con discapacidad publicados en revistas científica...

  17. [The Revista Médica del IMSS in the 2017 Healthcare Book Fair].

    Science.gov (United States)

    Ramiro-H, Manuel; Acosta-Pérez, L; Cruz-Aranda, J E; García-Damián, J J; Miguel-Reyes, R; González-Martínez, R

    2017-01-01

    On August, the second edition of the Healthcare Book Fair took place, sponsored by the Facultad de Medicina of UNAM. Again, the Revista Médica del Instituto Mexicano del Seguro Social participated with a stand where we promoted it, talked about the different indexes where our journal is included, explained its objective and scope, and finally talked about its nature as an open access journal, which is aimed to the clinical staff of the different health institutions of our country.

  18. Chamada de Artigos

    Directory of Open Access Journals (Sweden)

    Editor INTERthesis

    2008-01-01

    Full Text Available A Revista Internacional Interdisciplinar INTERthesis é um periódico científico semestral vinculado ao Programa de Pós-Graduação Interdisciplinar em Ciências Humanas -  PPGICH, (Doutorado em Ciências Humanas da Universidade Federal de Santa Catarina – UFSC. A INTERthesis estará recebendo, até o mês de Março de 2009, artigos inéditos, que discutam a problemática da Condição Humana e Natureza Humana no Século XXI para um próximo dossiê, assim como textos cujas temáticas se ajustem às três áreas do Programa de Pós-Graduação Interdisciplinar em Ciências Humanas: Condição Humana e Modernidade; Estudos de Gênero; e Meio Ambiente e Sociedade, para a seção de artigos. Serão aceitos textos em Português, Inglês e Espanhol. As submissões podem ser feitas até o dia 31 de Março de 2009 e devem estar de acordo com as normas exigidas pela revista.  Artigos fora das normas não serão avaliados e serão devolvidos ao(s autor(es. Por favor, acesse aqui as normas para publicação: http://www.periodicos.ufsc.br/index.php/interthesis/article/view/6153/5709

  19. Light-emitting diodes based on two-dimensional PA2(CsPbBr3)n-1PbBr4 layered perovskites%基于PA2(CsPbBr3)n-1PbBr4二维层状钙钛矿的电致发光二极管

    Institute of Scientific and Technical Information of China (English)

    孟妍; 牛连斌; 许龙; 林春燕; 熊自阳; 熊祖洪; 陈平

    2018-01-01

    进一步提高全无机卤铅钙钛矿材料CsPbBr3的发光效率,对制备高效率、高稳定性的电致发光二极管(PeLED)具有重要意义.制备纳米级的钙钛矿量子点,一方面有助于提高激子的束缚能和钙钛矿晶体的荧光效率,另一方面也有利于形成连续、致密的二维层状钙钛矿薄膜.本文采用“原位生长”的策略,将一种具有长链结构的丙基溴化胺(CH3CH2CH2NH3Br,PABr)作为添加剂,与CsPbBr3的前驱体溶液进行共混,得到PA2(CsPbBr3)n-1PbBr4钙钛矿量子点.形成的二维层状钙钛矿薄膜均匀致密,在光致发光条件下,呈现出明亮的蓝绿光发射(发光峰位于506 nm).在电致发光方面,基于PA2(CsPbBr3)n-1PbBr4的PeLED启亮电压为~4.2 V,最大亮度为~2370 cd/m2,最高电流效率为~1.06 cd/A,最高EQE为~0.57%.相较于传统方法,本工作在制作工艺、成膜质量以及PeLED的发光效率有了显著的提升,为将来进一步探索低成本、高效率的蓝光PeLEDs提供了一种可行的思路.%Solution-processed organometal halide perovskites (formulated as ABX3,where A is the methylammonium (CH3NH3+)(MA) or metal cesium cation (Cs+),B is the lead cation (Pb2+) and X is the halide anion (Br-,I-,Cl-)) are promising candidates for next generation light-emitting materials owing to their unique optoelectronic properties.These properties mainly include extremely high photoluminescence quantum yield (PLQY),easily tunable band gap and narrow emission characteristics.During the past two years,impressive progresses have been made in perovskite light-emitting diodes (PeLED) with hybrid organic-inorganic perovskite materials (i.e.,CH3NH3PbBr3).So far,the best external quantum efficiency (EQE) of CH3NH3PbBr3-based PeLED was reaching up to ~8.53% which was close to the results of organic light-emitting diodes (OLED).Despite the remarkable performance of the devices demonstrated,the stability of organic-inorganic hybrid perovskites

  20. Revista de Saúde Pública in scientific publications on Violence and Health (1967-2015

    Directory of Open Access Journals (Sweden)

    Lilia Blima Schraiber

    Full Text Available ABSTRACT This article retrieved the publications from the Revista de Saúde Pública journal (from 1967 to 2015 on violence and health, on the SciELO and PubMed bases, by searching for the terms “violence”, “suicide”, “aggression”, “bullying”, and “external causes”, registered in any part of the text. We found 130 articles (the first one published in 1974. We observed: increase of publications over time, with decrease in the last five years; similar production volume in lethal and non-lethal violence; later publication of the latter; few studies in qualitative research; mostly descriptive production; and visualization of the problem more by the acts than by contexts or motivations and aggressors. Social markers were little approached, appearing, from largest to smallest frequency, social class, gender, race/ethnicity, and generation. Human rights were little used and only recently used as analytical framework, connected more to gender than to social class. Although Revista de Saúde Pública has registered the theme in its publications, consolidating it as scientific production line, there is still great explanatory theoretical rarefaction and little intersectionality between violence, social inequalities, and human rights.

  1. Comparative study of α and β-ThBr4: structure and luminescence. Spectroscopy of U4+ in α-ThBr4

    International Nuclear Information System (INIS)

    Simoni, E.

    1988-05-01

    UV absorption of β-ThBr 4 : presents a plain absorption front and for the same temperature the threshold energy has the same value than the threshold energy of excitation function and photocurrent peak. Emission intensity and lifetime decrease when temperature increases from 300 K to 400K (extinction temperature). Results are interpreted either by molecular orbital levels of the ThBr 8 4- cluster or either by conduction and valence bands of the matrix above. Absorption and emission spectra of U 4+ in α-ThBr 4 (where U 4+ has a S 4 symmetry) between 300 K and 4.2 K allow indexation of 30 levels. Spectroscopic parameters are calculated in D 2d and S 4 symmetry. Comparison of these parameters with those of U 4+ in β-ThBr 4 and β-ThCl 4 shows that crystal field force is practically the same in the three matrices but the structure transformation from β to α has more influence on B q k than ligand change from Br - to Cl - . Owing to very low phonon energy, fluorescence spectra of U 4+ is easy to observe in α-ThBr 4 as it is in β-ThBr 4 and ThCl 4 [fr

  2. Apresentação

    Directory of Open Access Journals (Sweden)

    Maria Elias Soares

    2016-01-01

    Full Text Available CONSELHO EDITORIAL DA REVISTA DE LETRAS Abuêndia Padilha Pinto Universidade Federal de Pernambuco abuendia@elogica.com.br Eneida Leal Cunha Universidade Federal da Bahia eneidalealcunha@uol.com.br leal@ufba.br João Azenha Júnior Universidade de São Paulo azenha@usp.br José Luiz Fiorin Universidade de São Paulo jolufi@uol.com.br Leonor Scliar-Cabral Universidade Federal de Santa Catarina lsc@th.com.br Maria do Socorro Silva de Aragão Universidade Federal do Ceará acaragao@terra.com.br Maria Helena Mira Mateus Universidade de Lisboa mhm@.ip.pt Marcia Arbex Universidade Federal de Minas Gerais marphi@larnet.com.br Roland Walter Universidade Federal de Pernambuco walter_roland@rotmail.com Maria Esther Maciel Universidade Federal de Minas Gerais memaciel@yahoo.com.br Solange Coelho Vereza Universidade Federal Fluminense svereza@uol.com.br

  3. Sexo e gênero em revistas: uma análise preliminar de discurso Sexo y género en revistas: un análisis preliminar de discurso Sex and gender in magazines: a preliminary discourse analysis

    Directory of Open Access Journals (Sweden)

    Adriano Beiras

    2008-03-01

    Full Text Available Reportagens que essencializam a diferença entre características masculinas e femininas têm obtido destaque em diversas revistas de circulação nacional, para um público leigo. Pretendeu-se, assim, problematizar a questão, discutindo algumas publicações sobre o enfoque relacional de gênero. Foram analisadas revistas veiculadas de janeiro a abril de 2005, representativas da imprensa de grande circulação, disponibilizadas na biblioteca de um colégio particular dirigidas para os alunos da quinta série do ensino fundamental até a terceira série do ensino médio. Também foram pesquisadas duas revistas direcionadas a profissionais e estudantes de Psicologia. Dentre 33 artigos encontrados, foram estudados 17 e selecionados 08 para serem submetidos à técnica de análise de discurso. Nos artigos pesquisados, percebeu-se um expressivo enfoque biológico no tratamento da temática, valorizando perspectivas médicas, neurológicas, etológicas, num viés muitas vezes psicologizante. Verificou-se também a confusão dos conceitos de sexo e gênero, dicotomizados em algumas publicações e utilizados como sinônimos em outras.Reportajes que esencializan la diferencia entre características masculinas y femeninas han obtenido destaque en diversas revistas de circulación en nivel nacional en Brasil, para un público lego. Se ha buscado, de este modo, problematizar la cuestión, discutiendo algunas publicaciones sobre el enfoque relacional de género. Han sido analizadas revistas publicadas de enero a abril de 2005, representativas de la prensa de gran circulación, disponibles en la biblioteca de un colegio particular dirigida a los alumnos del quinto año de la Enseñanza Primaria hasta el tercer año de la Enseñanza Secundaria. También han sido investigadas das revistas dirigidas a profesionales y estudiantes de Psicología. De 33 artículos encontrados, fueron estudiados 17 y seleccionados 08 para ser sometidos a la técnica de an

  4. Search for Associated Higgs Boson Production WH→WWW*→l±νl'±ν'+X in pp Collisions at √(s)=1.96 TeV

    International Nuclear Information System (INIS)

    Abazov, V. M.; Piegaia, R.; Abbott, B.; Gutierrez, P.; Hall, I.; Jain, S.; Kopal, M.; Pompos, A.; Severini, H.; Skubic, P.; Strauss, M.; Abolins, M.; Benitez, J. A.; Brock, R.; Dyer, J.; Edmunds, D.; Hauser, R.; Kalk, J. R.; Kozminski, J.; Linnemann, J.

    2006-01-01

    We present a search for associated Higgs boson production in the process pp→WH→WWW*→l ± νl '± ν ' +X in final states containing two like-sign isolated electrons or muons (e ± e ± , e ± μ ± , or μ ± μ ± ). The search is based on D0 run II data samples corresponding to integrated luminosities of 360-380 pb -1 . No excess is observed over the predicted standard model background. We set 95% C.L. upper limits on σ(pp→WH)xBr(H→WW*) between 3.2 and 2.8 pb for Higgs boson masses from 115 to 175 GeV

  5. De la “mujer moderna” a la “mujer liberada”. Un análisis de la revista Claudia de México (1965-1977)

    OpenAIRE

    Felitti, Karina

    2018-01-01

    Resumen: Este artículo analiza la revista femenina Claudia de México, desde su aparición en 1965 hasta 1977, cuando se pone en marcha el Programa Nacional de Planificación Familiar (1977). Claudia se presenta como la revista para la “mujer moderna”, interpelándola a partir de la moda, las recetas de cocina, las publicidades, y con informes que abordan cuestiones sexuales y reproductivas, como el placer sexual, la anticoncepción y el aborto. A comienzos de los años setenta, las consignas de “l...

  6. Tendencias en la edición y en la mejora de la calidad de las revistas científicas españolas de Ciencias Sociales

    Directory of Open Access Journals (Sweden)

    Javier Olivera Betrán

    2011-06-01

    Full Text Available Las revistas científicas son un eslabón clave en el proceso de comunicación y divulgación de la producción científica de cada ámbito académico, científico y profesional. Las revistas científicas validan y certifican el conocimiento y comunican a toda la sociedad científica un nuevo avance y/o aportación en su campo específico para su conocimiento, refutación o aceptación. Contribuyen decisivamente a la legitimación social, académica y profesional de un campo curricular, en nuestro caso el de las Ciencias Sociales. Debido al estratégico papel que desempeñan las revistas científicas en el proceso de certificación y comunicación del conocimiento nuevo, están sometidas a un exigente proceso de evaluación. Las revistas científicas españolas de Ciencias Sociales se encuentran todavía anquilosadas en un entorno editorial tradicional e insuficiente para las nuevas necesidades y desafíos de hoy, aunque en un proceso de creciente concienciación para adoptar cambios en la mejora de calidad. Desde el punto de vista de la edición resultan todavía excesivamente tradicionales, son muy genéricas por su temática y carecen de especialización en la orientación científica, están poco presentes en las bases de datos internacionales más relevantes y su factor de impacto es bajo. En su conjunto constituyen una oferta poco atractiva para los artículos de impacto de su ámbito. Las tendencias que se dibujan entre las revistas científicas de Ciencias Sociales en el entorno más inmediato con perspectivas de fijación futura corresponden a la creación o transformación de las revistas científicas tradicionales en papel en revistas digitales, con acceso abierto (Open Access, especializadas en un área de conocimiento científico singular y con una orientación científica predominante de la naturaleza de los artículos, con creciente vocación de internacionalización tanto en la estructura de su Comité Científico como en la

  7. NY-BR-1 Antigen Expression and anti-NY-BR-1 IgG in Egyptian Breast Cancer Patients: Clinicopathological and Prognostic Significance.

    Science.gov (United States)

    Abu El-Nazar, Salma Y; Ghazy, Amany A; Ghoneim, Hossam E; Zoheir, Malak; Ahmed, Ahmed S; Sorour, Sally S; Abouelella, Amira M

    2015-01-01

    Breast cancer is the most common gynecological malignancy in the world. In Egypt, it ranks the first among female malignancies with incidence of 37.7%. Over the last decades, the integration of prognostic and predictive markers in treatment decisions has led to more individualized and optimized therapy. NY-BR-1 antigen has been shown to be frequently expressed in breast cancers. The study aimed to assess the tissue expression of NY-BR-1 antigen and serum IgG antibody to this antigen in Egyptian breast cancer females. The study was conducted on 60 females (10 healthy, 10 having benign breast lesions, 40 with malignant breast cancer). NY-BR-1 Ag expression was evaluated by immunohistochemistry and anti-NY-BR-1 IgG was assessed by ELISA. Results revealed a significant difference in NY-BR-1 Ag expression between benign and malignant breast cancer patients. There was a significant correlation between NY-BR-1 antigen expression and estrogen receptor's status (P = 0.019), stage of the disease (P = 0.008), menopausal status (P = 0.008), lymph node involvement (P = 0.022) and anti-NY-BR-1 IgG (P = 0.032) among the studied individuals. In addition, there was a statistically significant increase in anti-NY-BR-1 IgG O.D. results among malignant breast cancer group. It is correlated with tumor type (P < 0.001) and progesterone receptor status (P = 0.038). In conclusion, our work may represent a step towards identification of a new prognostic marker specific for breast cancer.

  8. [EVOLUTION OF REVISTA ROL DE ENFERMERÍA (1978-2008): A BIBLIOGRAPHIC ANALYSIS].

    Science.gov (United States)

    Duerto Alvarez, Clara; Miqueo, Consuelo

    2015-10-01

    Revista ROL de Enfermería was the first journal of nurses and adressed to nursing published with the birth of Spanish democracy, indexed soon Medline/PubMed. This paper analyzes the changes in the structure and function of the magazine. Highlights two facts. The journal ROL expresses the transformation of the new universitary nursing, and how was adapting to scientific standards: although not increased the number of original articles, was normalizing their structure, bibliography or citations pattern, and also the scientific writing style.

  9. Revistas españolas de Enfermería en bases de datos nacionales e internacionales Spanish nursing journal in national and international databases

    Directory of Open Access Journals (Sweden)

    M. Sobrido Prieto

    2005-06-01

    Full Text Available Introducción. El incremento en la producción bibliográfica y la creciente necesidad de conocer la documentación existente hacen de las bases de datos una de las herramientas más útiles para la recuperación selectiva de la información bibliográfica.Objetivos. Analizar la presencia de revistas científicas de Enfermería españolas en bases de datos nacionales específicas, tales como Cuiden, Cuidatge, BDIE, Enfispo y la base de datos de Ciencias de la Salud IME, así como las bases de datos internacionales de CINAHL y Medline.Metodología. Para la elaboración de este trabajo se ha realizado un listado de todas las revistas indizadas en cada una de las bases de datos seleccionadas y analizado la presencia de cada una de ellas en las 7 bases mencionadas.Resultados. Se han localizado un total de 116 revistas coincidentes. El reparto de éstas en las bases de datos es el siguiente: (1 Entre las nacionales Cuiden es la que contiene un mayor número de revistas con un total del 102 seguida de Cuidatge con 56. Enfispo contiene 26, IME con 8 y BDIE 7. Entre las bases de datos internacionales CINAHL, tan sólo tiene 6 y Medline 3 revistas de enfermería. (2 En lo que respecta a las revistas presentes en las bases de datos, sólo el 61,5 % se encuentra presente en una base de datos. En ninguno de los casos hemos localizado ninguna revista presente en todas las bases de datos y tan sólo en 3 casos hemos localizado revistas presentes en 5 de las 7 bases de datos analizadas.Discusión y conclusiones. La escasa visibilidad de publicaciones de enfermería española es debido en parte a la pequeña presencia de éstas en bases de datos, por lo que en consecuencia acaban recibiendo un insuficiente reconocimiento por parte de la comunidad científica.Background. The fast growing of health bibliographic production and the increasing need of knowing the bibliography makes databases one of the most useful tool for the information selective retrieval

  10. El mercado de las publicidades de medicamentos e insumos médicos especializados en el interior de Argentina: El caso de la Revista del Circulo Médico de Córdoba y la Revista Médica de Córdoba, Argentina, 1912-1938

    Directory of Open Access Journals (Sweden)

    Rodríguez, María Laura

    2014-12-01

    Full Text Available The article proposes an hermeneutic analysis as well as a socio-semiotic approach around a broad selection of advertisements published of medication and specialized medical supplyin the “Revista del Círculo Médico de Córdoba” and then its successor the “Revista Médica de Córdoba”. The advertisement –as an strategic mechanism- and the sailing market are organized around a changing as well as an specific historical trajectory where the local, the national and also the international are articulated in a particular way. On the one hand, that particularity is considered from the beginning of the publication in 1912 until 1938. In this historical period, the publication is associated to the dynamics of the transformation of the only specialised medical magazine published in the province of Córdoba, that in those years, it became an exclusive space of graphic advertisement that targeted medical elites. On the other hand, the article considers the argentine industrialized process’ influence on the advertising market configuration, traditionally monopolized by the foreign market – from the point of view of the pharmaceutical sector- and the competence of the pharmaceutical market, within the context of the international reconfiguration that brought the end of the First War World.Se propone un análisis hermenéutico y un abordaje socio-semiótico alrededor de una amplia selección de anuncios de medicamentos e insumos médicos especializados colocados en la «Revista del Círculo Médico de Córdoba» y luego en su sucesora, la «Revista Médica de Córdoba». Las publicidades -como dispositivos estratégicos- y el mercado de ofertas que se configura entraman en una trayectoria histórica cambiante y específica donde lo local, lo nacional e inclusive lo internacional se articulan de manera particular. Por una parte, dichas características se consideran de la creación de la publicación en 1912 hasta 1938, asociándolas a las din

  11. Three new chalcohalides, Ba4Ge2PbS8Br2, Ba4Ge2PbSe8Br2 and Ba4Ge2SnS8Br2: Syntheses, crystal structures, band gaps, and electronic structures

    International Nuclear Information System (INIS)

    Lin, Zuohong; Feng, Kai; Tu, Heng; Kang, Lei; Lin, Zheshuai; Yao, Jiyong; Wu, Yicheng

    2014-01-01

    Highlights: • Three new chalcohalides: Ba 4 Ge 2 PbS 8 Br 2 , Ba 4 Ge 2 PbSe 8 Br 2 and Ba 4 Ge 2 SnS 8 Br 2 have been synthesized. • The MQ 5 Br octahedra and GeQ 4 tetrahedra form a three-dimensional framework with Ba 2+ in the channels. • Band Gaps and electronic structures of the three compounds were studied. - Abstract: Single crystals of three new chalcohalides: Ba 4 Ge 2 PbS 8 Br 2 , Ba 4 Ge 2 PbSe 8 Br 2 and Ba 4 Ge 2 SnS 8 Br 2 have been synthesized for the first time. These isostructural compounds crystallize in the orthorhombic space group Pnma. In the structure, the tetra-valent Ge atom is tetrahedrally coordinated with four Q (Q = S, Se) atoms, while the bi-valent M atom (M = Pb, Sn) is coordinated with an obviously distorted octahedron of five Q (Q = S, Se) atoms and one Br atom, showing the stereochemical activity of the ns 2 lone pair electron. The MQ 5 Br (M = Sn, Pb; Q = S, Se) distorted octahedra and the GeQ 4 (Q = S, Se) tetrahedra are connected to each other to form a three-dimensional framework with channels occupied by Ba 2+ cations. Based on UV–vis–NIR spectroscopy measurements and the electronic structure calculations, Ba 4 Ge 2 PbS 8 Br 2 , Ba 4 Ge 2 PbSe 8 Br 2 and Ba 4 Ge 2 SnS 8 Br 2 have indirect band gaps of 2.054, 1.952, and 2.066 eV respectively, which are mainly determined by the orbitals from the Ge, M and Q atoms (M = Pb, Sn; Q = S, Se)

  12. El uso de la pintura en la publicidad de revistas femeninas en España. Análisis de la publicidad que usa la pintura en la revista Vogue

    OpenAIRE

    Jiménez Marín, Gloria; Gómez Abeja, Domingo

    2006-01-01

    La historia del arte ha influido en la publicidad en todas sus manifestaciones: pintura, escultura, fotografia, cine ... Esta investigación se centra en una de las siete bellas artes: la pintura, y la estudia para comprender qué influencia ha supuesto en la creatividad publicitaria y como sus creativos se valen de ella para acercarse mas a los consumidores y evitar el desprecio de los receptores ante la publicidad comercial. El perfil escogido es el de las revistas femeninas de alta gama p...

  13. Fifty years of entomological publications in the Revista de Biología Tropical.

    Science.gov (United States)

    Hanson, Paul

    2002-01-01

    Over its fifty year history nearly twenty percent of the papers published in the Revista de Biología Tropical have been about insects and arachnids. In the 1950's papers on arthropods of medical importance were dominant, in the 1960's there was a poliferation of papers on bees, and in more recent years the subjects have become increasingly diverse. In terms of nationality of contributing authors, the journal appears to have become increasingly international in later years.

  14. Operating Experience with the BR-5 Reactor; Experience acquise aupres du reacteur BR-5; Opyt ehkspluatatsii reaktora BR-5; Experiencia practica con el reactor BR-5

    Energy Technology Data Exchange (ETDEWEB)

    Lejpunskij, A. I.; Kazachkovskij, O. D.; Pinkhasik, M. S.; Aristarkhov, N. N.; Karpov, A. V.; Larin, E. P.; Efimov, I. A.

    1963-10-15

    The paper discusses the carrying-out of repair and maintenance work on the radioactive liquid-metal circuit of the BR-5 fast neutron reactor. Attention is also given to problems of reactor operation after achievement of the planned 2% fuel burn-up with some disturbance of leak-tightness in individual fuel elements. An account is given of experience in discharging the active section, examining the condition and leak-tightness of the fuel elements, and decontaminating the equipment and piping of the first radioactive circuit after reaching 5% fuel burn-up. (author) [French] Dans ce memoire les auteurs decrivent l'execution des reparations et des travaux d'entretien dans le circuit radioactif liquide-metal du reacteur a neutrons rapides BR-5. Ils etudient egalement les problemes lies au fonctionnement du reacteur au taux de combustion de 2% prevu avec quelques defauts d'etancheite dans des elements combustibles particuliers. Ils decrivent le dechargementen zone active et examinent les conditions d'etancheite des elements combustibles. Ainsi que la decontamination de l'appareillage et des tuyauteries du premier circuit radioactif apres avoir atteint un taux de combustion de 5%. (author) [Spanish] En la memoria se examinan los problemas planteados por el mantenimiento del circuito radiactivo de metal liquido del reactor de neutrones rapidos BR-5. Se tratan cuestiones relacionadas con la explotacion del reactor una vez alcanzado el grado de combustion de 2%, previsto en el proyecto y luego de producirse ciertas alteraciones de la densidad de determinados elementos combustibles. Se describen la experiencia adquirida durante la descarga del cuerpo del reactor, las investigaciones del estado general y de la hermeticidad de los elementos combustibles y las operaciones de descontaminacion de la instalacion y de las tuberias del circuito radiactivo primario despues de alcanzado un grado de combustion de 5%. (author) [Russian] V doklade rassmatrivayutsya voprosy proizvodstva

  15. X-ray and NQR studies of bromoindate(III) complexes. [C2H5NH3]4InBr7, [C(NH2)3]3InBr6, and [H3NCH2C(CH3)2CH2NH3]InBr5

    International Nuclear Information System (INIS)

    Iwakiri, Takeharu; Ishihara, Hideta; Terao, Hiromitsu; Lork, Enno; Gesing, Thorsten M.

    2017-01-01

    The crystal structures of [C 2 H 5 NH 3 ] 4 InBr 7 (1), [C(NH 2 ) 3 ] 3 InBr 6 (2), and [H 3 NCH 2 C(CH 3 ) 2 CH 2 NH 3 ]InBr 5 (3) were determined at 100(2) K: monoclinic, P2 1 /n, a=1061.94(3), b=1186.40(4), c=2007.88(7) pm, β= 104.575(1) , Z=4 for 1; monoclinic, C2/c, a=3128.81(12), b=878.42(3), c=2816.50(10) pm, β=92.1320(10) , Z=16 for 2; orthorhombic, P2 1 2 1 2 1 , a=1250.33(5), b=1391.46(6), c=2503.22(9) pm, Z=4 for 3. The structure of 1 contains an isolated octahedral [InBr 6 ] 3- ion and a Br - ion. The structure of 2 contains three different isolated octahedral [InBr 6 ] 3- ions. The structure of 3 has a corner-shared double-octahedral [In 2 Br 11 ] 5- ion and an isolated tetrahedral [InBr 4 ] - ion. The 81 Br nuclear quadrupole resonance (NQR) lines of the terminal Br atoms of the compounds are widely spread in frequency, and some of them show unusual positive temperature dependence. These observations manifest the N-H..Br-In hydrogen bond networks developed between the cations and anions to stabilize the crystal structures. The 81 Br NQR and differential thermal analysis (DTA) measurements have revealed the occurrence of unique phase transitions in 1 and 3. When the bond angles were estimated from the electric field gradient (EFG) directions calculated by the molecular orbital (MO) methods, accurate values were obtained for [InBr 6 ] 3- of 1 and for [In 2 Br 11 ] 5- and [InBr 4 ] - of 3, except for several exceptions in those for the latter two ions. On the other hand, the calculations of 81 Br NQR frequencies have produced up to 1.4 times higher values than the observed ones.

  16. Refurbishing the BR2 materials testing reactor

    International Nuclear Information System (INIS)

    Baugnet, J.M.; Dekeyser, J.; Gubel, P.

    1995-01-01

    SCK/CEN is refurbishing its BR2 reactor to allow its further operation during the next 15 years; in doing so, it chooses to keep BR2 available for future scientific and technological irradiation programs within an international context. (author) 2 figs

  17. Editorial Revista Ciencias Administrativas N° 6

    Directory of Open Access Journals (Sweden)

    Comite Ejecutivo Revista CADM

    2015-12-01

    Full Text Available Ciencias Administrativas concluye exitosamente su tercer año de vida. Este número presenta una particularidad muy especial para todo el equipo que hace esta publicación: la misma está dedicada a la memoria del Dr. Aldo Alonso, excelente y queridísimo docente e investigador de la Universidad Nacional de La Plata quien nos ha abandonado este año.Justamente, en honor a una persona que ha contribuido enormemente con la enseñanza y la construcción de una identidad propia en investigación dentro del área de la Administración, es que estamos muy complacidos de comunicar que los esfuerzos realizados para mejorar la calidad de nuestra revista, están dando los primeros frutos: este año, Ciencias Administrativas ha sido indizada en DOAJ, REBID, y forma parte del catálogo de LATINDEX.Este hecho se encuentra alineado con el objetivo de dar respuesta a las exigencias cada vez mayores de las instituciones académicas de que sus publicaciones estén indizadas en reconocidas bases de datos, puesto que ello garantiza que las mismas han pasado estrictos criterios de calidad científica. A través de la presencia de los artículos dentro de estas bases de datos se garantiza una difusión masiva y a nivel mundial, puesto que las mismas son fundamentales plataformas de búsqueda de información para la investigación científica.Este número continúa con la idea de acercar artículos no solo científicamente robustos sino también de relevancia en cuanto a las temáticas que se abordan y a las diferentes técnicas de análisis que se aplican en cada uno de ellos.Puntualmente, esta edición nos acerca dos trabajos referidos a las “Pequeñas y Medianas Empresas”. Otras dos publicaciones abordan áreas problemáticas de gran importancia para los países latinoamericanos en general y para la argentina en particular como son la energía eléctrica y el transporte ferroviario.Por último y como es costumbre, también se exponen varios art

  18. "Brücke dreht sich um!". A Deconstructionist Reading of Kafka's "Die Brücke"

    Directory of Open Access Journals (Sweden)

    Eva Hoffmann

    2014-12-01

    Full Text Available Franz Kafka's (1883-1924 "Die Brücke" is one of the less well-known texts by one of the most prolific authors of literary modernity. However, this short prose text embodies prevalent questions of literary modernity and philosophy as it reflects the crisis of language in regard of identity, communication, and literary production. Placed in the context of fin-de-siècle's discourse of language crisis, this article provides a dialogue between Kafka's "Die Brücke" and Hannah Arendt's (1906-1975 philosophy of thinking and speaking in The Life of the Mind. Contrary to Arendt's understanding of the metaphor as "a carrying over" between the mental activities of the solitude thinker and a reconciliation with the pluralistic world shared with others, this article argues for a deconstructionist reading of "Die Brücke" as a tool to reevaluate Arendt's notion of a shared human experience ensured through language and illustrates the advantages of poetic texts within philosophical discourses.

  19. A sexualidade da pessoa com deficiência nas capas da Revista Sentidos: inclusão ou perpetuação do estigma?

    Directory of Open Access Journals (Sweden)

    Karla Garcia Luiz

    Full Text Available Resumo A profusão de imagens fotográficas de pessoas no mundo contemporâneo revela um vastíssimo espectro de possibilidades de significar a condição humana. As fotografias de pessoas com deficiência figuram entre essas possibilidades, revelando as transformações do significado da deficiência no contexto histórico-cultural. Tendo em vista que a sexualidade também é um dos modos possíveis de objetivar-se no mundo e que poucos estudos tratam de modo crítico e emancipador da relação sexualidade e deficiência, este artigo analisa as representações sobre a sexualidade das pessoas com deficiência estampadas nas capas da Revista Sentidos - uma revista de segmento de e para a deficiência. A partir do enfoque do modelo social da deficiência, foi possível avaliar as tensões e sobreposições entre os significados da deficiência presentes na revista e sua relação com as transformações sociais que incidem sobre esse grupo social.

  20. Radiative forcing calculations for CH3Br

    International Nuclear Information System (INIS)

    Grossman, A.S.; Blass, W.E.; Wuebbles, D.J.

    1995-06-01

    Methyl Bromide, CH 3 Br, is the major organobromine species in the lower atmosphere and is a primary source of bromine in the stratosphere. It has a lifetime of 1.3 years. The IR methyl bromide spectra in the atmospheric window region, 7--13μ, was determined using a well tested Coriolis resonance and ell-doubling (and ell-resonance) computational system. A radiative forcing value of 0.00493 W/m 2 /ppbv was obtained for CH 3 Br and is approximately linear in the background abundance. This value is about 2 percent of the forcing of CFC-11 and about 278 times the forcing of C0 2 , on a per molecule basis. The radiative forcing calculation is used to estimate the global warming potential (GWP) of CH 3 Br. The results give GWPs for CH 3 Br of the order of 13 for an integration period of 20 years and 4 for an integration period of 100 years (assuming C0 2 = 1, following IPCC [1994]). While CH 3 Br has a GWP which is approximately 25 percent of the GWP of CH 4 , the current emission rates are too low to cause serious atmospheric greenhouse heating effects at this time

  1. Brüssel Euroopa pealinnaks? / Ülar Mark

    Index Scriptorium Estoniae

    Mark, Ülar, 1968-

    2009-01-01

    Brüsseli Euroopa kvartali planeerimisvõistlusest, mille peakorraldaja oli Brüsseli pealinna piirkond koos Brüsseli linna ja Euroopa Komisjoniga. Eestist osales žüriis arhitekt Ülar Mark. Meeskonna Atelier Christian de Portzamparc võidutööst ja teiste teise vooru pääsenud nelja meeskonna (JDS / Julien De Smedt Architects, OMA / Office for Metropolitan Architecture, Xaveer De Geyter Architect, Fletcher Priest Architects) töödest

  2. BR2 mixed core management

    International Nuclear Information System (INIS)

    Ponsard, B.; Beeckmans, A.

    1997-01-01

    The BR2 fuel cycle management can be optimized by the fabrication and the irradiation of fuel elements with uranium recovered from the reprocessing of BR2 spent fuel. The VIn E fuel performances could be upgraded by increasing the amount of burnable poisons, the fuel mass, the fuel density, ... in order to obtain a higher reactivity effect at a burnup of about β=12% and a longer cycle duration. The preliminary results of the calculations need however to be confirmed by measurements on effective reactor loads. (author)

  3. Palveluprosessi toimivaksi, Case: BR-Lelut

    OpenAIRE

    Korpela, Jenni

    2014-01-01

    Tämä opinnäytetyö on tehty toimeksiantona TOP-TOY A/S –konserniin kuluvalle lelumyymäläketju BR-Leluille Suomessa. Opinnäyte on toteutettu produktiluontoisena ja sen tuloksena on syntynyt Asiakaspalvelun ja myynnin käsikirja BR-Lelujen myymälähenkilökunnalle. Ajatus opinnäytetyölle ja eritoten käsikirjalle syntyi, kun kirjoittaja työskenteli kyseisen myymäläketjun myymälässä ja samanaikaisesti opiskeli erilaisia myyntitekniikoita ammattikorkeakoulussa. Kirjoittaja huomasi, että myyntihen...

  4. Revistas nativas digitales en el ámbito del deporte en España: el caso de MARCA Plus

    Directory of Open Access Journals (Sweden)

    Ignacio LABARGA-ADÁN

    2018-01-01

    Full Text Available Desde su aparición en el verano de 2014, MARCA Plus se ha convertido en un referente para las publicaciones nativas digitales. Prueba de ello es el reconocimiento por parte de Apple como una de las mejores 'apps' para iPad y ganar los 'Digital Magazine Awards' en 2015 y 2016. Este artículo pretende abordar las características de este nuevo formato en el panorama actual de los medios: el de las revistas nativas digitales. La revista objeto de estudio es una de las apuestas de Unidad Editorial por las nuevas tecnologías, habiendo conseguido en tres años un posicionamiento excepcional en el mercado digital. MARCA Plus destaca por su diseño, creatividad, carácter innovador, interactividad y nuevas narrativas audiovisuales, a lo que se suma el ser un soporte ideal para las nuevas tendencias en publicidad.

  5. Flg22-Triggered Immunity Negatively Regulates Key BR Biosynthetic Genes.

    Science.gov (United States)

    Jiménez-Góngora, Tamara; Kim, Seong-Ki; Lozano-Durán, Rosa; Zipfel, Cyril

    2015-01-01

    In plants, activation of growth and activation of immunity are opposing processes that define a trade-off. In the past few years, the growth-promoting hormones brassinosteroids (BR) have emerged as negative regulators of pathogen-associated molecular pattern (PAMP)-triggered immunity (PTI), promoting growth at the expense of defense. The crosstalk between BR and PTI signaling was described as negative and unidirectional, since activation of PTI does not affect several analyzed steps in the BR signaling pathway. In this work, we describe that activation of PTI by the bacterial PAMP flg22 results in the reduced expression of BR biosynthetic genes. This effect does not require BR perception or signaling, and occurs within 15 min of flg22 treatment. Since the described PTI-induced repression of gene expression may result in a reduction in BR biosynthesis, the crosstalk between PTI and BR could actually be negative and bidirectional, a possibility that should be taken into account when considering the interaction between these two pathways.

  6. Room-temperature synthesis of pure perovskite-related Cs4PbBr6 nanocrystals and their ligand-mediated evolution into highly luminescent CsPbBr3 nanosheets

    Science.gov (United States)

    Yang, Liu; Li, Dongmei; Wang, Cong; Yao, Wei; Wang, Hao; Huang, Kaixiang

    2017-07-01

    Currently, all-inorganic cesium lead-halide perovskite nanocrystals have attracted enormous attentions owing to their excellent optical performances. While great efforts have been devoted to CsPbBr3 nanocrystals, the perovskite-related Cs4PbBr6 nanocrystals, which were newly reported, still remained poorly understood. Here, we reported a novel room-temperature reaction strategy to synthesize pure perovskite-related Cs4PbBr6 nanocrystals. Size of the products could be adjusted through altering the amount of ligands, simply. A mixture of two good solvents with different polarity was innovatively used as precursor solvent, being one key to the high-yield Cs4PbBr6 nanocrystals synthesis. Other two keys were Cs+ precursor concentration and surface ligands. Ingenious experiments were designed to reveal the underlying reaction mechanism. No excitonic emission was observed from the prepared Cs4PbBr6 nanocrystals in our work. We considered the green emission which was observed in other reports originated from the avoidless transformation of Cs4PbBr6 into CsPbBr3 nanocrystals. Indeed, the new-prepared Cs4PbBr6 nanocrystals could transform into CsPbBr3 nanosheets with surface ligands mediated. The new-transformed two-dimensional CsPbBr3 nanosheets could evolve into large-size nanosheets. The influences of surface ligand density on the fluorescent intensity and stability of transformed CsPbBr3 nanosheets were also explained. Notably, the photoluminescence quantum yield of the as-transformed CsPbBr3 nanosheets could reach as high as 61.6% in the form of thin film. The fast large-scale synthesis of Cs4PbBr6 nanocrystals and their ligand-mediated transformation into high-fluorescent CsPbBr3 nanosheets will be beneficial to the future optoelectronic applications. Our work provides new approaches to understand the structural evolution and light-emitting principle of perovskite nanocrystals. [Figure not available: see fulltext.

  7. Kuluttaja-asiakkaiden mielikuva Concept.10-brändistä

    OpenAIRE

    Väisänen, Janna-Mari

    2011-01-01

    Tutkimuksen tavoitteena on selvittää, millainen käsitys Concept.10:n kuluttaja-asiakkailla on brändin eri osa-alueista ja millaisia mielleyhtymiä brändin mainonta, nimi, tunnus ja slogan herättävät. Näillä tekijöillä on vaikutusta kokonaismielikuvan syntymiseen brändistä. Tutkimusongelmana on, millainen mielikuva kuluttaja-asiakkailla on Concept.10-brändistä. Concept.10 toimii yhteisenä markkinointinimenä Mikkelin Puhelin Oyj:n omistamille yhtiöille ja niiden palveluille. Teoreettisessa v...

  8. Non-enzymatic antioxidant accumulations in BR-deficient and BR-insensitive barley mutants under control and drought conditions.

    Science.gov (United States)

    Gruszka, Damian; Janeczko, Anna; Dziurka, Michal; Pociecha, Ewa; Fodor, Jozsef

    2017-12-07

    Drought is one of the most adverse stresses that affect plant growth and yield. Disturbances in metabolic activity resulting from drought cause overproduction of reactive oxygen species. It is postulated that brassinosteroids (BRs) regulate plant tolerance to the stress conditions, but the underlying mechanisms remain largely unknown. An involvement of endogenous BRs in regulation of the antioxidant homeostasis is not fully clarified either. Therefore, the aim of this study was to elucidate the role of endogenous BRs in regulation of non-enzymatic antioxidants in barley (Hordeum vulgare) under control and drought conditions. The plant material included the 'Bowman' cultivar and a group of semi-dwarf near-isogenic lines (NILs), representing mutants deficient in BR biosynthesis or signaling. In general, accumulations of 11 compounds representing various types of non-enzymatic antioxidants were analyzed under both conditions. The analyses of accumulations of reduced and oxidized forms of ascorbate indicated that the BR mutants contain significantly higher contents of dehydroascorbic acid under drought conditions when compared with the 'Bowman' cultivar. The analysis of glutathione accumulation indicated that under the control conditions the BR-insensitive NILs contained significantly lower concentrations of this antioxidant when compared with the rest of genotypes. Therefore, we postulate that BR sensitivity is required for normal accumulation of glutathione. A complete accumulation profile of various tocopherols indicated that functional BR biosynthesis and signaling are required for their normal accumulation under both conditions. Results of this study provided an insight into the role of endogenous BRs in regulation of the non-enzymatic antioxidant homeostasis. © 2017 Scandinavian Plant Physiology Society.

  9. Electronic structure of Co(III) doped bromo-bridged Ni complexes, [Ni1-xCox(chxn)2Br]Br2.

    Science.gov (United States)

    Xie, Jimin; Wu, Hashen; Kawakami, Daisuke; Iguchi, Hiroaki; Takaishi, Shinya; Yamashita, Masahiro; Matsuzaki, Hiroyuki; Okamoto, Hiroshi; Tanaka, Hisaaki; Kuroda, Shin-ichi

    2008-03-17

    This article describes the electronic structure of the Co(III) doped Br bridged Ni(III) complexes, [Ni(1-x)Cox(chxn)2Br]Br2 (x = 0.01, 0.02, 0.05, and 0.11) by using a optical spectroscopy, scanning tunneling microscopy (STM), and electron spin resonance spectroscopy. In the optical reflectivity spectrum, the new band was formed at about 0.5 eV, which is reasonably recognized as the d(z2) band of doped Co(III) ions. In the STM images of [Ni(1-x)Cox(chxn)2Br]Br2, the bright spots attributable to the tunnel current from the Fermi level of the STM tip to the conduction band of the sample were observed. In addition, some brighter spots were also observed. Because the number of the brighter spots is in good agreement with that of doped Co species, the brighter spots can be assigned to doped Co(III) sites. These are reasonably explained by the tunnel current from the Fermi level of the tip to the d(z2) band of Co(III). The Curie spin concentration was gradually increased with increasing Co(III) ions, which is explained by the scissions of the S = 1/2 1D antiferromagnetic chains.

  10. Estudio de las publicaciones periódicas españolas de tecnología e ingeniería mecánica y metalúrgica

    Directory of Open Access Journals (Sweden)

    García del Toro, M. A.

    1998-03-01

    Full Text Available The present article studies the Spanish journals of mechanical and metallurgical technology and engineering, as a first approach to the current state of the main vehicles of diffusion of research in these areas of knowledge in Spain. Their formal features have been analyzed, the types of articles, the origin of contributions, etc. The sources for the analysis of the journals have been the ICYT data base and the original journals. The result is a classification of the Spanish journals of mechanical and metallurgical technology and engineering.<br>>En el presente artículo se ha realizado un estudio de las revistas españolas de tecnología e ingeniería mecánica y metalúrgica, con el objetivo de poder efectuar una primera aproximación al estado actual de los principales órganos de difusión de los avances de la investigación de este grupo de áreas de conocimiento en España. Para ello se ha analizado la presentación de las mismas, los tipos de artículos más frecuentes, la procedencia de las contribuciones, etc. Los instrumentos básicos para el análisis de las revistas han sido la base de datos ICYT y las propias revistas. Como resultado se ofrece una clasificación de las revistas españolas de tecnología e ingeniería mecánica y metalúrgica.

  11. KBr-Li Br and KBr-LiBr doped with Ti mixed single crystal by Czochralski method and glow curve studies

    International Nuclear Information System (INIS)

    Faripour, H.; Faripour, N.

    2003-01-01

    Mixed-single Crystals: pure KBr-LiBr and KBr-LiBr with Ti dopant were grown by Czochralski method. Because of difference between lattice parameters of KBr and LiBr, the growth speed of crystals were relatively low, and they were annealed in a special temperature condition providing some cleavages. They were exposed by β radiation and the glow curve was analysed for each crystal. Analysing of glow curve, showed that Ti impurity has been the curves of main peak curve appearance temperature decreasing

  12. Image Reference Database in Teleradiology: Migrating to WWW

    Science.gov (United States)

    Pasqui, Valdo

    The paper presents a multimedia Image Reference Data Base (IRDB) used in Teleradiology. The application was developed at the University of Florence in the framework of the European Community TELEMED Project. TELEMED overall goals and IRDB requirements are outlined and the resulting architecture is described. IRDB is a multisite database containing radiological images, selected because their scientific interest, and their related information. The architecture consists of a set of IRDB Installations which are accessed from Viewing Stations (VS) located at different medical sites. The interaction between VS and IRDB Installations follows the client-server paradigm and uses an OSI level-7 protocol, named Telemed Communication Language. After reviewing Florence prototype implementation and experimentation, IRDB migration to World Wide Web (WWW) is discussed. A possible scenery to implement IRDB on the basis of WWW model is depicted in order to exploit WWW servers and browsers capabilities. Finally, the advantages of this conversion are outlined.

  13. Hurtigste versus mest brændstoføkonomiske ruter

    DEFF Research Database (Denmark)

    Andersen, Ove; Krogh, Benjamin Bjerre; Lahrmann, Harry

    2013-01-01

    Der er stort fokus på at forbedre brændstoføkonomien i transportbranchen generelt. I denne artikel anvendes brændstoftallene fra Controller Area Network Bus (CANBus) kombineret med GPS data til at skabe et digitalt vejkort, hvor det er muligt at sammenligne de hurtigste ruter med de mest brændsto...

  14. CsPb2Br5 Single Crystals: Synthesis and Characterization

    KAUST Repository

    Dursun, Ibrahim

    2017-08-02

    CsPb2Br5 is a ternary halogen-plumbate material with close characteristics to well-reported halide perovskites. Due to its unconventional two-dimensional structure, CsPb2Br5 is being looked at broadly for potential applications in optoelectronics. CsPb2Br5 investigations are currently limited to nanostructures and powder forms of the material, which present unclear and conflicting optical properties. In this study, we present the synthesis and characterization of CsPb2Br5 bulk single crystals, which enabled us to finally clarify the material\\'s optical features. Our CsPb2Br5 crystal has a two-dimensional structure with Pb2Br5- layers spaced by Cs+ cations, and exhibits a ~3.1 eV indirect bandgap with no emission in the visible spectrum.

  15. Longpath DOAS observations of surface BrO at Summit, Greenland

    Directory of Open Access Journals (Sweden)

    J. Stutz

    2011-09-01

    Full Text Available Reactive halogens, and in particular bromine oxide (BrO, have frequently been observed in regions with large halide reservoirs, for example during bromine catalyzed coastal polar ozone depletion events. Much less is known about the presence and impact of reactive halogens in areas without obvious halide reservoirs, such as the polar ice sheets or continental snow. <br>> We report the first LP-DOAS measurements of BrO at Summit research station in the center of the Greenland ice sheet at an altitude of 3200 m. BrO mixing ratios in May 2007 and June 2008 were typically between 1–3 pmol mol−1, with maxima of up to 5 pmol mol−1. These measurements unequivocally show that halogen chemistry is occurring in the remote Arctic, far from known bromine reservoirs, such as the ocean. During periods when FLEXPART retroplumes show that airmasses resided on the Greenland ice sheet for 3 or more days, BrO exhibits a clear diurnal variation, with peak mixing ratios of up to 3 pmol mol−1 in the morning and at night. The diurnal cycle of BrO can be explained by a changing boundary layer height combined with photochemical formation of reactive bromine driven by solar radiation at the snow surface. The shallow stable boundary layer in the morning and night leads to an accumulation of BrO at the surface, leading to elevated BrO despite the expected smaller release from the snowpack during these times of low solar radiation. During the day when photolytic formation of reactive bromine is expected to be highest, efficient mixing into a deeper neutral boundary layer leads to lower BrO mixing ratios than during mornings and nights. <br>> The extended period of contact with the Greenland snowpack combined with the diurnal profile of BrO, modulated by boundary layer height, suggests that photochemistry in the snow is a significant source of BrO measured at Summit during the 2008 experiment. In addition, a rapid transport event

  16. Algunos aspectos técnicos estructurales que condicionan la realización de una obra de remodelación

    Directory of Open Access Journals (Sweden)

    González Valle, Enrique

    1981-12-01

    Full Text Available Not available.<br>>El autor esboza una sistemática del estudio previo al que debe ajustarse una obra de remodelación que afecte a los elementos estructurales de una construcción, pasando revista a los problemas que suelen plantearse y a los medios auxiliares que pueden aplicarse para eliminar las incertidumbres que condicionarían la seguridad y durabilidad de los elementos originales afectados por la obra.

  17. Elamusturundus: riigi brändimine ja Eesti bränd / Siiri Same

    Index Scriptorium Estoniae

    Same, Siiri

    2015-01-01

    Artikli autor oma 2015. a. Tallinna Tehnikaülikoolis kaitstud doktoritööst "Conceptualization of experience marketing and country branding from a marketing management perspective" ("Elamusturunduse ja riigi brändimise kontseptualiseerimine turunduse juhtimise vaatenurgast")

  18. Aproximación a una clasificación y categorización de las revistas científicas españolas de Ciencias de la Actividad Física y el Deporte

    Directory of Open Access Journals (Sweden)

    Javier Olivera Betrán

    2011-09-01

    Full Text Available Las revistas científicas españolas de Ciencias de la Actividad Física y el Deporte constituyen un universo de alrededor de una cincuentena de publicaciones que no están suficientemente clasificadas ni categorizadas en un catálogo cualitativo propio. La necesidad de acreditación de la actividad investigadora de los docentes universitarios y de evaluación de los proyectos de investigación de nuestro ámbito disciplinar presentados a las Agencias de Evaluación y Acreditación Nacional correspondientes, ha convertido a las revistas científicas de nuestro campo en un elemento esencial en el proceso de validación, difusión y evaluación de la producción científica. Ante tal situación, hemos identificado trece instrumentos de evaluación de revistas científicas citados por dichas Agencias para conocer mejor su naturaleza y características básicas. Bajo este contexto hemos elaborado un listado con las 55 revistas identificadas de nuestro ámbito disciplinar y las hemos valorado en función de su presencia en las Bases de datos nacionales e internacionales anteriormente discriminadas y que han sido recomendadas por estas Agencias. Al análisis anterior, hemos incorporado el tamiz del único estudio de evaluación y clasificación de revistas científicas existente en este sector. Finalmente hemos señalado las 9 revistas de este campo que, según nuestro criterio interpretativo y a la luz de los datos estudiados, responden mejor a las exigencias de valoración dictadas por estas Agencias y se encuentran en buena posición para disputar la obtención de un significativo Factor de impacto (FI.

  19. Improved Growth Methods for LaBr3 Scintillation Radiation Detectors

    International Nuclear Information System (INIS)

    McGregor, Douglas S.

    2011-01-01

    The objective is to develop advanced materials for deployment as high-resolution gamma ray detectors. Both LaBr3 and CeBr3 are advanced scintillation materials, and will be studied in this research. Prototype devices, in collaboration Sandia National Laboratories, will be demonstrated along with recommendations for mass production and deployment. It is anticipated that improved methods of crystal growth will yield larger single crystals of LaBr3 for deployable room-temperature operated gamma radiation spectrometers. The growth methods will be characterized. The LaBr3 and CeBr3 scintillation crystals will be characterized for light yield, spectral resolution, and for hardness.

  20. O Enquadramento da Crise Hídrica na Revista Veja

    Directory of Open Access Journals (Sweden)

    Andrea Reis

    2016-01-01

    Full Text Available O artigo tem por objetivo estudar o enquadramento midiático construído em torno da crise hídrica que se instalou no Estado de São Paulo, com maior período de seca entre os anos de 2014 e 2015. No intuito de analisar como o tema foi retratado pelos meios de comunicação, a revista Veja foi eleita objeto deste estudo, que pretende elencar como ocorreu o enquadramento da crise e as atribuições de responsabilidade veiculadas por essa mídia, ao governador reeleito Geraldo Alckmin (PSDB, a Companhia de Saneamento Básico do Estado de São Paulo (Sabesp, aos cidadãos e ao meio ambiente, no período de 1º de janeiro a 31 de março de 2015.

  1. Presencia de las geólogas en revistas científicas cubanas a partir del estudio de su producción científica

    OpenAIRE

    Figueredo Figueredo, M.Sc Ana Luisa; Corona Rodríguez, M.Sc Aliana; Figueredo Matos, Lic. Maritza de la Caridad

    2017-01-01

    En la investigación se muestran los resultados de un estudio realizado sobre la presencia de las geólogas en las revistas científicas cubanas durante el período 1968 hasta abril de 2016, a partir de un análisis de su producción científica relacionada con la Geología. Se tomaron los datos del Registro Nacional de Publicaciones Seriadas de Cuba, seleccionando las revistas científicas cubanas cuyas líneas de investigación guardan relación con esta ciencia. Se identificaron las geólogas a partir ...

  2. La Alpaca -vaatemerkin brändäys

    OpenAIRE

    Lehtinen, Laura

    2013-01-01

    Tämä opinnäytetyö käsittelee brändin vahvistamista ja brändiohjeiston luomista vaa-tealan yritykselle La Alpacalle. La Alpaca on suomalainen vaatemerkki, joka suunnit-telee, tuottaa ja myy alpakanvillasta valmistettuja tuotteita. Materiaalin ainutlaatuisuus ja hienous ovat olleet osa yrityksen identiteettiä alusta asti. Brändin lisäksi työssä on tutkittu kaupankäynnin rakenteellista muuttumista perinteisestä myymälätoiminnasta verkkomyyntiin. Työn tavoitteena on ollut luoda materiaalin tun...

  3. EL GOBIERNO CORPORATIVO EN EL ÁMBITO DEL SECTOR PÚBLICO: UN ESTUDIO BIBLIOMÉTRICO EN LAS REVISTAS UBICADAS EN EL ÁREA DE ADMINISTRACIÓN PÚBLICA

    Directory of Open Access Journals (Sweden)

    JESÚS MAURICIO FLÓREZ-PARRA

    2017-01-01

    Full Text Available Esta investigación se centra en un estudio bibliométrico comprendido entre los años 2007-2015. Se analizan las temáticas más relevantes y significativas, las universidades que investigan el fenó- meno del gobierno corporativo (GC en el ámbito público y las revistas que abordan esta temática. Para este fin, se tomaron las 47 revistas de mayor prestigio e impacto internacional incluidas en Public Administration. El análisis de los resultados pone sobre el relieve la implementación del GC en el sector público en áreas como la educación, la sanidad o los gobiernos locales y el predominio que ejerce la cultura anglosajona a través de las d iversas revistas académicas del Journal Citation Reports.

  4. P+C : Proyecto y Ciudad : revista de temas de arquitectura. Número 2

    OpenAIRE

    Universidad Politécnica de Cartagena

    2011-01-01

    «Proyecto y Ciudad» es una revista científica que publica artículos originales y difunde la intención programática y expresiva del Grupo de Investigación «Cartagena: Proyecto & Ciudad» de la Universidad Politécnica de Cartagena. Está dedicada a la investigación, análisis y crítica sobre temas relacionados con la Arquitectura, entendida ésta como un acto complejo que reúne pensamiento, reflexión, expresión, proyecto, inserción urbana e historia. Va dirigida preferentemente a la comunidad cient...

  5. P+C : Proyecto y Ciudad : revista de temas de arquitectura. Número 3

    OpenAIRE

    Universidad Politécnica de Cartagena

    2012-01-01

    «Proyecto y Ciudad» es una revista científica que publica artículos originales y difunde la intención programática y expresiva del Grupo de Investigación «Cartagena: Proyecto & Ciudad» de la Universidad Politécnica de Cartagena. Está dedicada a la investigación, análisis y crítica sobre temas relacionados con la Arquitectura, entendida ésta como un acto complejo que reúne pensamiento, reflexión, expresión, proyecto, inserción urbana e historia. Va dirigida preferentemente a la comunidad cient...

  6. Azúcar en América

    Directory of Open Access Journals (Sweden)

    Santamaría García, Antonio

    2005-04-01

    Full Text Available This is an introductory essay to the «Revista de Indias» monographic issue on the sugar industry in America. It briefly explores the main characteristics of this research field as well as the reasons for the historiographical significance it has achieved. It also presents the authors and their contributions to the scientific debate.<br>>Este artículo, un ensayo introductorio del número monográfico de la «Revista de Indias» sobre la industria azucarera en América, revisa brevemente los rasgos fundamentales de las investigaciones acerca de ella y la razón por la que se ha convertido con el tiempo en un tema historiográfico de primer orden. Además, presenta a los autores y sus contribuciones al conocimiento y al debate científico en los estudios incluidos en el citado volumen.

  7. Irradiation of novel MTR fuel plates in BR2

    International Nuclear Information System (INIS)

    Verboomen, B.; Aoust, Th.; Beeckmans De Westmeerbeeck, A.; De Raedt, Ch.

    2000-01-01

    Since the end of 1999, novel MTR fuel plates with very high-density meat are being irradiated in BR2. The purpose of the irradiation is to investigate the behaviour of these fuel plates under very severe reactor operation conditions. The novel fuel plates are inserted in two standard six-tube BR2 fuel elements in the locations normally occupied by the standard outer fuel plates. The irradiation in BR2 was prepared by carrying out detailed neutron Monte Carlo calculations of the whole BR2 core containing the two experimental fuel elements for various positions in the reactor and for various azimuthal orientations of the fuel elements. Comparing the thus determined fission density levels and azimuthal profiles in the new MTR fuel plates irradiated in the various channels allowed the experimenters to choose the most appropriate BR2 channel and the most appropriate fuel element orientation. (author)

  8. Photoelectron Emission Studies in CsBr at 257 nm

    International Nuclear Information System (INIS)

    Maldonado, Juan R.; Liu, Zhi; Sun, Yun; Pianetta, Piero A.; Pease, Fabian W.

    2006-01-01

    CsBr/Cr photocathodes were found [1,2] to meet the requirements of a multi-electron beam lithography system operating with a light energy of 4.8 eV (257nm). The fact that photoemission was observed with a light energy below the reported 7.3 eV band gap for CsBr was not understood. This paper presents experimental results on the presence of intra-band gap absorption sites (IBAS) in CsBr thin film photo electron emitters, and presents a model based on IBAS to explain the observed photoelectron emission behavior at energies below band gap. A fluorescence band centered at 330 nm with a FWHM of about 0.34 eV was observed in CsBr/Cr samples under 257 nm laser illumination which can be attributed to IBAS and agrees well with previously obtained synchrotron photoelectron spectra[1] from the valence band of CsBr films

  9. Editor de la revista: entre el sueño y la supervivencia

    Directory of Open Access Journals (Sweden)

    Targino, María das Graças

    2010-01-01

    Full Text Available Analiza el papel del editor científico, relaciona las habilidades necesarias para aquellos que anhelan ser editor y reanuda las funciones que él realiza en una revista científica. Revisa los conceptos clave, como editor y editora, edición y proceso editorial. Recuerda la tipología de las editoras, y, sobre todo, muestra que el editor vive la paradoja de responder a las cuestiones culturales del país en que vive (el sueño y asegurar las ganancias por los libros que publica (la supervivencia. Describe el mercado editorial brasileño de las publicaciones científicas, en referencia a los títulos impresos y electrónicos. Destaca la mediación entre el autor y el editor y los dilemas inherentes a la función de generar la producción intelectual (de cualquier naturaleza; la mercantilización creciente de la producción intelectual y científica como producto comercial; la multiplicidad de funciones que la cotidianidad impone al editor; la cuestión cantidad versus calidad de los originales enviados a las revistas científicas. Por último, destaca la importancia del editor de revistas científicas, que garantiza la seguridad, la calidad y el reconocimiento de los títulos publicados y, por lo tanto, de la comunicación científica mediante el cuidado con la calidad de los trabajos científicos.Abstract in English: Analyzes the role of scientific editor, lists the skills needed for those yearning to be editor and resumes his functions in a scientific journal. Review the main concepts such as editor and publisher, editing and publishing process. Presents the types of publishers, and, above all, shows that the editor is living the paradox of responding to the cultural issues in the country where he lives (his dreams and of ensuring profits for the enterprises (her survival. Describe the Brazilian publishing market of scientific publications, referring to the print and electronic titles. Stresses the mediation between the author and the editor

  10. Elastic properties of Cs2HgBr4 and Cs2CdBr4 crystals

    International Nuclear Information System (INIS)

    Kityk, A.V.; Zadorozhna, A.V.; Shchur, Y.I.; Martynyuk-Lototska, Y.I.; Burak, Y.; Vlokh, O.G.

    1998-01-01

    Using ultrasonic velocity measurements, all components of the elastic constant matrix C ij , elastic compliances matrix S ij , and linear compressibility constants matrix K ij of orthorhombic Cs 2 HgBr 4 and Cs 2 CdBr 4 crystals have been determined over a wide temperature range, including the region of the phase transition from the normal to the incommensurate phase. Results obtained are considered within the framework of the phenomenological theory. Preliminary analysis of the acoustical properties at room temperature clearly indicates that both crystals are relatively important materials for acousto-optical applications. Copyright (1998) CSIRO Australia

  11. [Gender analysis of papers published in Revista de Neurología (2002-2006)].

    Science.gov (United States)

    Aleixandre-Benavent, R; Alonso-Arroyo, A; González-Alcaide, G; González de Dios, J; Sempere, A P; Valderrama-Zurián, J C

    There is an ongoing interest in the society in promoting gender equality and in women integration in research activities. The purpose of this work is to identify from a gender perspective the bibliometric characteristics of articles published in Revista de Neurología journal during the 2002-2006 period. Records were obtained from Science Citation Index database of ISI-Thomson platform. The following indicators were determined, disaggregated by gender: year of publication, type of document, number and order of signatures, number of collaborators, signature/papers index and in the institutional and geographical level. 4527 authors were identified, 2614 (57.74%) men and 1913 (42.,26%) women. The highest women's participation took place in original articles (39.01% of signatures). 44.5% of authors with one published article were women, while 'big women producers' (those with more than 9 articles) only were 16.67%. A greater productivity in men and a greater rate of collaboration in women has been detected. Scientific activity studies disaggregated by gender give an essential information in order to establish the basis of a scientific policy for promoting the woman as researcher. The evolution in the number of female authors in Revista de Neurología journal does not present an aiming growth to reach the parity in the next years. A low presence of women in positions of high productivity has been detected, whose causes should be identified.

  12. Br...Br and van der Waals interactions along a homologous series: crystal packing of 1,2-dibromo-4,5-dialkoxybenzenes.

    Science.gov (United States)

    Suarez, Sebastián A; Muller, Federico; Gutiérrez Suburu, Matías E; Fonrouge, Ana; Baggio, Ricardo F; Cukiernik, Fabio D

    2016-10-01

    The crystalline structures of four homologues of the 1,2-dibromo-4,5-dialkoxybenzene series [Br 2 C 6 H 2 (OC n H 2n + 1 ) 2 for n = 2, 12, 14 and 18] have been solved by means of single-crystal crystallography. Comparison along the series, including the previously reported n = 10 and n = 16 derivatives, shows a clear metric trend (b and c essentially fixed along the series and a growing linearly with n), in spite of some subtle differences in space groups and/or packing modes. A uniform packing pattern for the aliphatic chains has been found for the n = 12 to 18 homologues, which slightly differs from that of the n = 10 derivative. The crystalline structures of all the higher homologues (n = 10-18) seem to arise from van der Waals interchain interactions and, to a lesser extent, type II Br...Br interactions. The dominant role of interchain interactions provides direct structural support for the usual interpretation of melting point trends like that found along this series. Atoms in Molecules (AIM) analysis allows a comparison of the relative magnitude of the interchain and Br...Br interactions, an analysis validated by the measured melting enthalpies.

  13. Performance evaluation of LaBr3: Ce scintillator

    International Nuclear Information System (INIS)

    Xie Ming; Lin Li; Liu Shihao; Xiao Peng; Xie Qingguo

    2012-01-01

    The cerium doped lanthanum bromide crystal (LaBr 3 : Ce) is a new kind of scintillator with many advantages such as good energy resolution, high light output, short decay time, good proportionality response. These properties make the LaBr 3 : Ce attractive substantial interest to use in the radiation detection. The energy resolution were investigated with Φ25 × 25 mm LaBr 3 : Ce coupled to a Hamamatsu R8900 photomultiplier tube. Energy resolution of 3.6% (FWHM) have been achieved for 511 keV photons ( 18 F source) at room temperature. Decay time constant of 20 ns have been acquired with a Hamamatsu fast-time-response R9800 photomultiplier tube. The results approve the excellent characterizations of LaBr 3 : Ce and imply its enormous potentiality in the radiation detectors of gamma-ray spectroscopy and PET. (authors)

  14. Synthesis and crystal structure determination of Br2SeIBr ...

    Indian Academy of Sciences (India)

    Unknown

    termined by single crystal X-ray diffraction method. This compound was ... company and SeBr4 was prepared from the reaction of Se powder (0⋅1 g) with Br2 ... angles of Br2SeIBr and table 4 shows anisotropic displace- ment parameters.

  15. Water-resistant, monodispersed and stably luminescent CsPbBr3/CsPb2Br5 core-shell-like structure lead halide perovskite nanocrystals

    Science.gov (United States)

    Qiao, Bo; Song, Pengjie; Cao, Jingyue; Zhao, Suling; Shen, Zhaohui; Gao, Di; Liang, Zhiqin; Xu, Zheng; Song, Dandan; Xu, Xurong

    2017-11-01

    Lead halide perovskite materials are thriving in optoelectronic applications due to their excellent properties, while their instability due to the fact that they are easily hydrolyzed is still a bottleneck for their potential application. In this work, water-resistant, monodispersed and stably luminescent cesium lead bromine perovskite nanocrystals coated with CsPb2Br5 were obtained using a modified non-stoichiometric solution-phase method. CsPb2Br5 2D layers were coated on the surface of CsPbBr3 nanocrystals and formed a core-shell-like structure in the synthetic processes. The stability of the luminescence of the CsPbBr3 nanocrystals in water and ethanol atmosphere was greatly enhanced by the photoluminescence-inactive CsPb2Br5 coating with a wide bandgap. The water-stable enhanced nanocrystals are suitable for long-term stable optoelectronic applications in the atmosphere.

  16. Reassessment of the Upper Fremont Glacier ice-core chronologies by synchronizing of ice-core-water isotopes to a nearby tree-ring chronology

    Science.gov (United States)

    Chellman, Nathan J.; McConnell, Joseph R.; Arienzo, Monica; Pederson, Gregory T.; Aarons, Sarah; Csank, Adam

    2017-01-01

    The Upper Fremont Glacier (UFG), Wyoming, is one of the few continental glaciers in the contiguous United States known to preserve environmental and climate records spanning recent centuries. A pair of ice cores taken from UFG have been studied extensively to document changes in climate and industrial pollution (most notably, mid-19th century increases in mercury pollution). Fundamental to these studies is the chronology used to map ice-core depth to age. Here, we present a revised chronology for the UFG ice cores based on new measurements and using a novel dating approach of synchronizing continuous water isotope measurements to a nearby tree-ring chronology. While consistent with the few unambiguous age controls underpinning the previous UFG chronologies, the new interpretation suggests a very different time scale for the UFG cores with changes of up to 80 years. Mercury increases previously associated with the mid-19th century Gold Rush now coincide with early-20th century industrial emissions, aligning the UFG record with other North American mercury records from ice and lake sediment cores. Additionally, new UFG records of industrial pollutants parallel changes documented in ice cores from southern Greenland, further validating the new UFG chronologies while documenting the extent of late 19th and early 20th century pollution in remote North America.

  17. Grain size engineering of bcc refractory metals: Top-down and bottom-up-Application to tungsten

    International Nuclear Information System (INIS)

    Kecskes, L.J.; Cho, K.C.; Dowding, R.J.; Schuster, B.E.; Valiev, R.Z.; Wei, Q.

    2007-01-01

    We have used two general methodologies for the production of ultrafine grained (UFG) and nanocrystalline (NC) tungsten (W) metal samples: top-down and bottom-up. In the first, Equal channel angular extrusion (ECAE), coupled with warm rolling has been used to fabricate UFG W, and high pressure torsion (HPT) was used to fabricate NC W. We demonstrate an abrupt shift in the deformation mechanism, particularly under dynamic compressive loading, in UFG and NC W. This novel deformation mechanism, a dramatic transition from a uniform deformation mode to that of localized shearing, is shared by other UFG and NC body-centerd cubic (BCC) metals. We have also conducted a series of bottom-up experiments to consolidate powdered UFG W precursors into solid bodies. The bottom-up approach relies on rapid, high-temperature consolidation, specifically designed for UFG and NC W powders. The mechanical property results from the top-down UFG and NC W were used as minimum property benchmarks to guide and design the experimental protocols and parameters for use in the bottom-up procedures. Preliminary results, showing rapid grain growth during the consolidation cycle, did not achieve full density in the W samples. Further development of high-purity W nanopowders and appropriate grain-growth inhibitors (e.g., Zener pinning) will be required to successfully produce bulk-sized UFG and NC W samples

  18. Shape and phase evolution from CsPbBr3 perovskite nanocubes to tetragonal CsPb2Br5 nanosheets with an indirect bandgap.

    Science.gov (United States)

    Li, Guopeng; Wang, Hui; Zhu, Zhifeng; Chang, Yajing; Zhang, Ting; Song, Zihang; Jiang, Yang

    2016-09-13

    Tetragonal CsPb 2 Br 5 nanosheets were obtained by an oriented attachment of orthorhombic CsPbBr 3 nanocubes, involving a lateral shape evolution from octagonal to square. Meanwhile, the experimental results, together with DFT simulation results, indicated that the tetragonal CsPb 2 Br 5 is an indirect bandgap semiconductor that is PL-inactive with a bandgap of 2.979 eV.

  19. En el nombre de Perón. Los usos políticos del pasado en la revista Unidos (1983-1991

    Directory of Open Access Journals (Sweden)

    Martina Garategaray

    2012-01-01

    Full Text Available La revista Unidos, publicada entre 1983 y 1991 por un grupo de militantes peronistas y dirigida por Carlos “Chacho” Álvarez, surgió con la intención de reponer al peronismo en el contexto de “la vuelta a la democracia”. En este camino, la revista hizo un uso particular del pasado, más específicamente de la experiencia peronista de 1973-1974 (del último Perón, para intervenir políticamente en la década de los 80. Unidos construyó un pasado democrático, pluralista y frentista del peronismo, que si por un lado llevaba la marca de Perón, por el otro reconocía los valores de la democracia alfonsinista. Esta relectura del pasado le permitió a la publicación apoyar el surgimiento de la Renovación Peronista, disputar los sentidos de la democracia con el alfonsinismo, oponerse al menemismo y terminar apoyando al llamado “Grupo de los Ocho”, integrado por los diputados justicialistas que se distanciaron del gobierno del presidente Carlos Menem. Estas apuestas estuvieron condicionadas por las imágenes que los miembros de la revista construyeron del peronismo y del legado de Perón, y que llevaron a Unidos a llamar a abandonar las filas justicialistas y construir nuevas identidades políticas, como único modo de mantenerse fiel a ese pasado del peronismo.

  20. Reversible light-mediated compositional and structural transitions between CsPbBr3 and CsPb2Br5 nanosheets.

    Science.gov (United States)

    Shen, Wei; Ruan, Longfei; Shen, Zhitao; Deng, Zhengtao

    2018-03-13

    This communication describes a new method to achieve reversible light-induced chemical composition and phase structural transitions from polyvinylpyrrolidone-capped orthorhombic CsPbBr 3 to tetragonal CsPb 2 Br 5 nanosheets or vice versa. This work will deepen our understanding of the controlled synthesis, post-processing, and decomposition pathway of cesium lead halide perovskite nanocrystals.

  1. Evolución del impacto del Boletín de la Sociedad Española de Cerámica y Vidrio

    Directory of Open Access Journals (Sweden)

    Sanz-Guerrero, O.

    2006-12-01

    Full Text Available An analysis of the impact evolution of the journal Bulletin of the Spanish Ceramic and Glass Society has attempted. The results of an inquiry between Spanish Glass and Ceramic Society, SECV, members as well readers and author have been took into account. The profile of the received inquiries reveals that the user of the journal is mainly a ceramic and glass professional devoted to R+D that published scientific papers. This interest was compared with the data obtained from SCI. The increase of the impact facto of the SECV journal is related to a high relatedness index and a short cited half-life. Both factor point out that the scientific nature of the journal is limited to a small community restricted by the language.<br>>Se ha realizado un análisis de la evolución del factor de impacto de la revista. Para ello se han evaluado los resultados de una encuesta realizada entre los socios de la Sociedad Española ce Cerámica y Vidrio, SECV, lectores y autores de la revista. El perfil del usuario de la revista es el de un profesional dedicado a la investigación y desarrollo en materiales cerámicos y vítreos que es autor de trabajos científicos. El interés de los encuestados se contrasta con los datos derivados del SCI para el periodo en el que la revista ha formado parte de dicha base de datos. El aumento en el factor de impacto de la revista Boletín de la Sociedad Española de Cerámica y Vidrio, esta relacionado con un factor de proximidad muy elevado y una vida media de las citaciones muy corta. Ambos factores señalan que la revista en cuanto a su orientación científica, se encuentra limitada a una comunidad muy pequeña constreñida principalmente por el idioma.

  2. Microstructure and mechanical behavior of neutron irradiated ultrafine grained ferritic steel

    Energy Technology Data Exchange (ETDEWEB)

    Alsabbagh, Ahmad, E-mail: ahalsabb@ncsu.edu [Department of Nuclear Engineering, North Carolina State University, Raleigh, NC 27695 (United States); Sarkar, Apu [Department of Nuclear Engineering, North Carolina State University, Raleigh, NC 27695 (United States); Miller, Brandon [ATR National Scientific User Facility, Idaho National Laboratory, Idaho Falls, ID 83415 (United States); Burns, Jatuporn [Center for Advanced Energy Studies, Idaho Falls, ID 83401 (United States); Squires, Leah; Porter, Douglas; Cole, James I. [ATR National Scientific User Facility, Idaho National Laboratory, Idaho Falls, ID 83415 (United States); Murty, K.L. [Department of Nuclear Engineering, North Carolina State University, Raleigh, NC 27695 (United States)

    2014-10-06

    Neutron irradiation effects on ultra-fine grain (UFG) low carbon steel prepared by equal channel angular pressing (ECAP) have been examined. Counterpart samples with conventional grain (CG) sizes have been irradiated alongside with the UFG ones for comparison. Samples were irradiated in the Advanced Test Reactor (ATR) at Idaho National Laboratory (INL) to 1.37 dpa. Atom probe tomography revealed manganese and silicon-enriched clusters in both UFG and CG steel after neutron irradiation. Mechanical properties were characterized using microhardness and tensile tests, and irradiation of UFG carbon steel revealed minute radiation effects in contrast to the distinct radiation hardening and reduction of ductility in its CG counterpart. After irradiation, micro hardness indicated increases of around 9% for UFG versus 62% for CG steel. Similarly, tensile strength revealed increases of 8% and 94% respectively for UFG and CG steels while corresponding decreases in ductility were 56% versus 82%. X-ray quantitative analysis showed that dislocation density in CG increased after irradiation while no significant change was observed in UFG steel, revealing better radiation tolerance. Quantitative correlations between experimental results and modeling were demonstrated based on irradiation induced precipitate strengthening and dislocation forest hardening mechanisms.

  3. DoD Fuel Facilities Criteria

    Science.gov (United States)

    2015-04-27

    Pantograph Feb-2010 UFGS 33 58 00 Leak Detection for Fueling Systems Apr-2008 UFGS 33 52 43.13 Aviation Fuel Piping Feb-2010 UFGS 33 59 00 Tightness of... Pipeline Pressure Testing Guidelines  Specifications  Questions 2 7/12/2017 3 7/12/2017 DoD Fuels Facilities Documents  Unified...UFGS)  Most in the 33 nn nn series  Associated with Standard Designs  Available on WBDG site  Coating Systems 4 7/12/2017 Pipeline

  4. Paysans du Brésil

    Directory of Open Access Journals (Sweden)

    Dominique Temple

    2007-01-01

    Full Text Available Eric Sabourin, « Paysans du Brésil : Entre échange marchand et réciprocité » Paris, Editions Quae, 241p, 30 euros, (préface de Maxime Haubert, 2007Dans la présentation du livre, Maxime Haubert dit :«Cet ouvrage propose une analyse socio-anthropologique et agronomique des sociétés rurales et paysannes du Brésil et des transformations qu'elles ont connues ces dernières décennies, en particulier face aux interventions de l'Etat et à l'expansion du marché capitaliste (.... «Le livre pose d'abor...

  5. Design and implementation of tutorials for PLC B&R Automation

    OpenAIRE

    Sýkora, Daniel

    2014-01-01

    Tato bakalářská práce se zabývá návrhem a realizací úloh pro PLC B&R a podrobným návodem práce v Automation Studio. Obsahuje také informace o firmě B&R Automation Ges. m. b. H. a jejích produktech. Návrh úloh probíhal ve vývojovém prostředí B&R Automation Studio. Praktická úloha na regulaci teploty byla řešena a odzkoušena na B&R PLC X20. This bachelor’s thesis deals with the design and the implementation tutorials for PLC B&R as well as the detailed instructions of work in the Automation ...

  6. RELIGIÃO E NEGAÇÃO DA MODERNIDADE: A LEITURA FUNDAMENTALISTA DA BÍBLIA NAS REVISTAS DE ESCOLA BÍBLICA DOMINICAL DA ASSEMBLÉIA DE DEUS

    OpenAIRE

    Bertone de Oliveira Sousa

    2010-01-01

    Este artigo investiga as peculiaridades da leitura da Bíblia realizada pelos redatores das revistas de Escola Bíblica Dominical da Assembléia de Deus no Brasil, tendo como ponto de partida a ortodoxia doutrinária professada pela igreja e o fundamentalismo religioso presente em suas representações. Para isso, faz uma breve historicização da igreja, bem como uma problematização do conceito de fundamentalismo, para depois analisar-se as revistas de faixa etária de jovens e adultos da editora CPA...

  7. Production of 77 Br for medical application

    International Nuclear Information System (INIS)

    Bastos, M.A.V.

    1982-01-01

    Bromine-77 is produced with the variable energy cyclotron (CV-28) at the Instituto de Engenharia Nuclear, via the 75 As. (α, 2 n) 77 Br reaction, by bombarding arsenic trioxide with 28 MeV alpha-particles. The thick target yield is 0.3 mCi/μAh. The target is dissolved in concentrated N H 4 OH and 77 Br, separated from arsenic, by an anionic exchange resin, is obtained carrier-free with a separation yield greater than 90%. All the process is remotely controlled using electric and pneumatic systems, manipulators and tongs. The quality control is made by atomic absorption and gamma-ray spectroscopy. The present production rate of Br-77 is 2.3 mCi per irradiation. (author)

  8. Characterization of the LiSi/CsBr-LiBr-KBr/FeS(2) System for Potential Use as a Geothermal Borehole Power Source

    International Nuclear Information System (INIS)

    GUIDOTTI, RONALD A.; REINHARDT, FREDERICK W.

    1999-01-01

    We are continuing to study the suitability of modified thermal-battery technology as a potential power source for geothermal borehole applications. Previous work focused on the LiSi/FeS(sub 2) couple over a temperature range of 350 C to 400 C with the LiBr-KBr-LiF eutectic, which melts at 324.5 C. In this work, the discharge processes that take place in LiSi/CsBr-LiBr-KBr eutectic/FeS(sub 2) thermal cells were studied at temperatures between 250 C and 400 C using pelletized cells with immobilized electrolyte. The CsBr-LiBr-KBr eutectic was selected because of its lower melting point (228.5 C). Incorporation of a quasi-reference electrode allowed the determination of the relative contribution of each electrode to the overall cell polarization. The results of single-cell tests and limited battery tests are presented, along with preliminary data for battery stacks tested in a simulated geothermal borehole environment

  9. El Universo Simbólico de una Revista Cominternista: Diego Rivera y El Libertador

    Directory of Open Access Journals (Sweden)

    Ricardo Melgar Bao

    2000-01-01

    Full Text Available Desde una perspectiva antropológica, es posible investigar el tejido simbólico de un grupo político, como vehículo de comprensión de su cosmovisión y praxis. La unidad de análisis elegida es una agrupación antiimperialista latinoamericana, a la que se estudia a través de los símbolos en los relatos políticos e iconográficos de su revista El Libertador (1925-1929.

  10. Facile synthesis of CsPbBr3/PbSe composite clusters.

    Science.gov (United States)

    Nguyen, Thang Phan; Ozturk, Abdullah; Park, Jongee; Sohn, Woonbae; Lee, Tae Hyung; Jang, Ho Won; Kim, Soo Young

    2018-01-01

    In this work, CsPbBr 3 and PbSe nanocomposites were synthesized to protect perovskite material from self-enlargement during reaction. UV absorption and photoluminescence (PL) spectra indicate that the addition of Se into CsPbBr 3 quantum dots modified the electronic structure of CsPbBr 3 , increasing the band gap from 2.38 to 2.48 eV as the Cs:Se ratio increased to 1:3. Thus, the emission color of CsPbBr 3 perovskite quantum dots was modified from green to blue by increasing the Se ratio in composites. According to X-ray diffraction patterns, the structure of CsPbBr 3 quantum dots changed from cubic to orthorhombic due to the introduction of PbSe at the surface. Transmission electron microscopy and X-ray photoemission spectroscopy confirmed that the atomic distribution in CsPbBr 3 /PbSe composite clusters is uniform and the composite materials were well formed. The PL intensity of a CsPbBr 3 /PbSe sample with a 1:1 Cs:Se ratio maintained 50% of its initial intensity after keeping the sample for 81 h in air, while the PL intensity of CsPbBr 3 reduced to 20% of its initial intensity. Therefore, it is considered that low amounts of Se could improve the stability of CsPbBr 3 quantum dots.

  11. Reactor BR2. Introduction

    International Nuclear Information System (INIS)

    Gubel, P.

    2001-01-01

    The BR2 is a materials testing reactor and is still one of SCK-CEN's important nuclear facilities. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. During the last three years, the availability of the installation was maintained at an average level of 97.6 percent. In the year 2000, the reactor was operated for a total of 104 days at a mean power of 56 MW. In 2000, most irradiation experiments were performed in the CALLISTO PWR loop. The report describes irradiations achieved or under preparation in 2000, including the development of advanced facilities and concept studies for new programmes. An overview of the scientific irradiation programmes as well as of the R and D programme of the BR2 reactor in 2000 is given

  12. Reactor BR2. Introduction

    Energy Technology Data Exchange (ETDEWEB)

    Gubel, P

    2001-04-01

    The BR2 is a materials testing reactor and is still one of SCK-CEN's important nuclear facilities. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. During the last three years, the availability of the installation was maintained at an average level of 97.6 percent. In the year 2000, the reactor was operated for a total of 104 days at a mean power of 56 MW. In 2000, most irradiation experiments were performed in the CALLISTO PWR loop. The report describes irradiations achieved or under preparation in 2000, including the development of advanced facilities and concept studies for new programmes. An overview of the scientific irradiation programmes as well as of the R and D programme of the BR2 reactor in 2000 is given.

  13. A comparative study of LaBr3(Ce(3+)) and CeBr3 based gamma-ray spectrometers for planetary remote sensing applications.

    Science.gov (United States)

    Kozyrev, A; Mitrofanov, I; Owens, A; Quarati, F; Benkhoff, J; Bakhtin, B; Fedosov, F; Golovin, D; Litvak, M; Malakhov, A; Mokrousov, M; Nuzhdin, I; Sanin, A; Tretyakov, V; Vostrukhin, A; Timoshenko, G; Shvetsov, V; Granja, C; Slavicek, T; Pospisil, S

    2016-08-01

    The recent availability of large volume cerium bromide crystals raises the possibility of substantially improving gamma-ray spectrometer limiting flux sensitivities over current systems based on the lanthanum tri-halides, e.g., lanthanum bromide and lanthanum chloride, especially for remote sensing, low-level counting applications or any type of measurement characterized by poor signal to noise ratios. The Russian Space Research Institute has developed and manufactured a highly sensitive gamma-ray spectrometer for remote sensing observations of the planet Mercury from the Mercury Polar Orbiter (MPO), which forms part of ESA's BepiColombo mission. The Flight Model (FM) gamma-ray spectrometer is based on a 3-in. single crystal of LaBr3(Ce(3+)) produced in a separate crystal development programme specifically for this mission. During the spectrometers development, manufacturing, and qualification phases, large crystals of CeBr3 became available in a subsequent phase of the same crystal development programme. Consequently, the Flight Spare Model (FSM) gamma-ray spectrometer was retrofitted with a 3-in. CeBr3 crystal and qualified for space. Except for the crystals, the two systems are essentially identical. In this paper, we report on a comparative assessment of the two systems, in terms of their respective spectral properties, as well as their suitability for use in planetary mission with respect to radiation tolerance and their propensity for activation. We also contrast their performance with a Ge detector representative of that flown on MESSENGER and show that: (a) both LaBr3(Ce(3+)) and CeBr3 provide superior detection systems over HPGe in the context of minimally resourced spacecraft and (b) CeBr3 is a more attractive system than LaBr3(Ce(3+)) in terms of sensitivities at lower gamma fluxes. Based on the tests, the FM has now been replaced by the FSM on the BepiColombo spacecraft. Thus, CeBr3 now forms the central gamma-ray detection element on the MPO spacecraft.

  14. La Calle y Mañana: Las trayectorias divergentes de dos revistas políticas ecuatorianas

    Directory of Open Access Journals (Sweden)

    Hernán Ibarra

    2012-04-01

    Full Text Available English abstract: La Calle and Mañana: The divergent trajectories of two Ecuadorian political magazinesThe defunct magazines La Calle y Mañana played a major role in defining the political space from the mid-fifties to the early seventies of the twentieth century in Ecuador. The position taken and their integration into the political arena was such that these magazines had a clear identification within the limits of what wa considered left and right; and furthermore they had an impact on defining these political orientations. This article discusses the political contexts in which these publications came and went, their orientations and conflicts. Attention is given to the role played by Alejandro Carrión and Pedro Jorge Vera, intellectuals who promoted these magazines. The trajectories of the two publicaions demonstrate the conditions that they imposed on the cycles of Ecuadorian politics.Resumen:Las desaparecidas revistas La Calle y Mañana cumplieron un papel destacado en la definición del espacio político entre mediados de la década del cincuenta y comienzos de la década del setenta del siglo XX en el Ecuador. La toma de posición y su inserción en el espacio político, hacía que estas revistas tuvieran una clara identificación en los límites de lo que era considerado izquierda y derecha; y, además incidieron en definir esas orientaciones políticas. En este artículo se analizan los contextos políticos en los que estas publicaciones surgieron y desaparecieron, sus orientaciones y conflictos. Se presta atención a la función desempeñada por Ale-jandro Carrión y Pedro Jorge Vera, los intelectuales que animaron estas revistas. Las trayectorias de las dos publicaciones evidencian los condicionamientos que impusieron los ciclos de la política ecuatoriana.

  15. [The work of Santiago Ramón y Cajal in the Revista Trimestral Micrográfica (Trabajos del Laboratorio de Investigaciones Biológicas)].

    Science.gov (United States)

    Gamundí, A; Timoner, G; Nicolau, M C; Rial, R V; Esteban, S; Langa, M A

    This paper is based on a study of Revista Trimestral Micrografica (Trabajos del Laboratorio de Investigaciones Biologicas) between its creation by Santiago Ramon y Cajal in 1896 and his death in 1934. The journal Revista Trimestral Micrografica was the main way in which Santiago Ramon y Cajal and his school published their work since its creation. Ramon y Cajal created the journal for two main reasons: first, he needed a rapid system to publish his own work; second, the journal could serve to encourage his pupils. The journal published many important reports defending the neuronal theory which expanded the cellular one to include the nervous system.

  16. Dissociative multiple photoionization of SiBr4 and GeBr4 in the VUV and X-ray regions: a comparative study of inner-shell processes involving Si(2p, 2s), Ge(3d, 3p, 3s), and Br(3d, 3p, 3s)

    International Nuclear Information System (INIS)

    Boo, Bong Hyun; Saito, Norio

    2003-01-01

    Dissociative multiple photoionization of MBr 4 (M=Si, Ge) in the Si(2p, 2s), Ge(3d, 3s, 3p), and Br(3d, 3p, 3s) inner-shell regions has been studied by using time-of-flight (TOF) mass spectrometry coupled to synchrotron radiation in the ranges of 50∼944 eV for SiBr 4 and 50∼467 eV for GeBr 4 . Total photoion and photoion-photoion coincidence (PIPICO) yields have been measured as functions of the photon energy. Here, giant shape resonances have been observed beyond the thresholds of the 3d shells owing to the Br(3d 10 )→Br(3d 9 -f) excitation, showing the similar patterns for both of the systems. The ranges and the intensities of the shape resonances are found to be tremendously broad and enhanced, respectively, by the tetrahedral arrangement of the bromine ligands. In addition to the giant resonances, we have observed discrete features corresponding to the Br(3d), Si(2p), and Si(2s) in SiBr 4 and to the Br(3d), Ge(3p), and Ge(3s) in GeBr 4 . The dissociation processes of multiply charged parent ions have also been evaluated from the variations of photoelectron-photoion coincidence (PEPICO) and PIPICO yields with the photon energy. Over the entire energies examined, most efficient PIPICO channels involve Br + -Br + , Br + -MBr + , and M + -Br + (M=Si, Ge), the formation of which indicates that the total destruction of the molecules is a dominant process in the dissociative photoionization of the molecules

  17. Pyrolysis studies of PP/PE/PS/PVC/HIPS-Br plastics mixed with PET and dehalogenation (Br, Cl) of the liquid products

    Energy Technology Data Exchange (ETDEWEB)

    Bhaskar, Thallada; Kaneko, Jun; Muto, Akinori; Sakata, Yusaku [Department of Applied Chemistry, Faculty of Engineering, Okayama University, 3-1-1 Tsushima Naka, 700-8530 Okayama (Japan); Jakab, Emma [Research Laboratory of Materials and Environmental Chemistry, Chemical Research Center, Hungarian Academy of Sciences, P.O. Box 17, H-1525 Budapest (Hungary); Matsui, Toshiki [Toda Kogyo Co. Ltd., Hiroshima 739-0652 (Japan); Uddin, Md. Azhar [Process Safety and Environment Protection Group, School of Engineering, The University of Newcastle, Callaghan, NSW 2308 (Australia)

    2004-08-01

    Pyrolysis of polypropylene (PP)/polyethylene (PE)/polystyrene (PS)/poly(vinyl chloride) (PVC)/high impact polystyrene with brominated flame retardant (HIPS-Br) plastics mixed with poly(ethylene terephthalate) (PET) was performed at 430C under atmospheric pressure using a semi-batch operation. The presence of PET in the pyrolysis mixture of PP/PE/PS/PVC/HIPS-Br affected significantly the formation of decomposition products and the decomposition behavior of the plastic mixture. We observed the following effects of PET on the pyrolysis of PP/PE/PS/PVC/HIPS-Br mixed plastics: (1) the yield of liquid product decreased and the formation of gaseous products increased; (2) a waxy residue was formed in addition to the solid carbon residue; (3) the formation of SbBr{sub 3} was not detected in liquid products; (4) the yield of chlorinated branched alkanes increased as well as vinyl bromide and ethyl bromide were formed. The use of calcium carbonate carbon composite (Ca-C) completely removed the chlorine and bromine content from the liquid products during PP/PE/PS/PVC/HIPS-Br pyrolysis, however in the presence of PET, the catalytic experiment (Ca-C, 8g) yielded liquid products containing 310ppm of Br and 20ppm of Cl. In addition, the Ca-C increased the yield of liquid products about 3-6wt.%, as well as enhanced the gaseous product evolution and decreased the yield of residue. The halogen free liquid hydrocarbons can be used as a feedstock in a refinery or as a fuel.

  18. Synthesis and characterization of silver nanoparticle composite with poly(p-Br-phenylsilane).

    Science.gov (United States)

    Kim, Myoung-Hee; Lee, Jun; Mo, Soo-Yong; Woo, Hee-Gweon; Yang, Kap Seung; Kim, Bo-Hye; Lee, Byeong-Gweon; Sohn, Honglae

    2012-05-01

    The one-pot synthesis and characterization of silver nanoparticle-poly(p-Br-phenylsilane) composites have been carried out. The conversion of silver(+1) salt to stable silver(0) nanoparticles is promoted by poly(p-Br-phenylsilane), Br-PPS possessing both possible reactive Si-H bonds in the polymer backbone and C-Br bonds in the substituents. The composites were characterized using XRD, TEM, FE-SEM, and solid-state UV-vis analytical techniques. TEM and FE-SEM data show the formation of the composites where large number of silver nanoparticles (less than 30 nm of size) are well dispersed throughout the Br-PPS matrix. XRD patterns are consistent with that for fcc-typed silver. The elemental analysis for Br atom and the polymer solubility confirm that the cleavage of C-Br bond and the Si-Br dative bonding were not occurred appreciably at ambient temperature. Nonetheless, TGA data suggest that some sort of cross-linking was occurred at high temperature. The size and processability of such nanoparticles depend on the ratio of metal to Br-PPS. In the absence of Br-PPS, most of the silver particles undergo macroscopic aggregation, which indicates that the polysilane is necessary for stabilizing the silver nanoparticles.

  19. Gentamicin-Eluting Titanium Dioxide Nanotubes Grown on the Ultrafine-Grained Titanium.

    Science.gov (United States)

    Nemati, Sima Hashemi; Hadjizadeh, Afra

    2017-08-01

    Titanium (Ti)-based materials is the most appropriate choices for the applications as orthopedic and dental implants. In this regard, ultrafine-grained (UFG) titanium with an enhanced mechanical properties and surface energy has attracted more attention. Titanium dioxide (TiO 2 ) nanotubes grown on the titanium could enhance bone bonding, cellular response and are good reservoirs for loading drugs and antibacterial agents. This article investigates gentamicin loading into and release from the TiO 2 nanotubes, grown on the UFG compared to coarse-grained (CG) titanium substrate surfaces. Equal Channel Angular Pressing (ECAP) was employed to produce the UFG structure titanium. TiO 2 nanotubes were grown by the anodizing technique on both UFG and CG titanium substrate surfaces. Scanning electron microscopy (SEM) imaging confirmed TiO 2 nanotube growth on the surface. The UV-vis spectroscopy analysis results show that the amount of gentamicin load-release in the anodized UFG titanium sample is higher than that of CG one which can be explained in terms of thicker TiO 2 nanotube arrays layer formed on UFG sample. Moreover, the anodized UFG titanium samples released the drug in a longer time than CG (1 day for the UFG titanium vs. 3 h for the CG one). Regarding wettability analysis, anodized UFG titanium sample showed more enhanced hydrophilicity than CG counterpart. Therefore, the significantly smaller grain size of pure titanium provided by the ECAP technique coupled with appropriate subsequent anodization treatment not only offers a good combination of biocompatibility and adequate mechanical properties but also it provides a delayed release condition for gentamicin.

  20. http://www.seasinop.com.br/revista/index.php?journal=SEA&page=article&op=view&path%5B%5D=221&path%5B%5D=pdf_93

    Directory of Open Access Journals (Sweden)

    J. L. Escobar

    2016-05-01

    Full Text Available The bar soap is a cosmetic personal care product most consumed in the world. The incorporation of actives to these products provides greater refinement to the formulation. Oils are incorporated in order to increase the moisturize and hydration of the skin. Stability tests are conducted to demonstrate the product's behavior during its period of validity and are essential when there is development of new formulations. The objective of this work was to produce bar soaps containing pequi oil and evaluate its stability through physicochemical testing. They developed three primary formulations with different pequi oil concentrations (1, 3 and 5% w/w, which were evaluated for strength and absorption to water, durability, melting, foaming, crack formation and pH . The best results were obtained with the incorporation of 3% (w/w of oil. After determination of the optimal concentration of oil, a new formulation was developed containing 3% of pequi oil and the stability tests were remade. It was found that the soaps showed good stability. Thus, it can be shown that the pequi oil can be used for preparation of bar soaps and that they have stability within the parameters studied

  1. Revised and extended analysis of Br IV

    International Nuclear Information System (INIS)

    Riyaz, A.; Rahimullah, K.; Tauheed, A.

    2014-01-01

    The spectrum of three-times ionized bromine Br IV has been studied in the 319–2350 Å wavelength region. The spectrum was recorded on a 3-m normal incidence vacuum spectrograph at the St. Francis Xavier University, Antigonish (Canada) and 6.65-m grazing incidence spectrograph at the Zeeman laboratory (Amsterdam). The light sources used were a triggered spark and sliding spark, respectively. The ground configuration of Br IV 3d 10 4s 2 4p 2 , the excited configurations 3d 10 4s4p 3 +3d 10 4s 2 4p (4d+5d+6d+5s+6s+7s) in the odd parity system and 3d 10 4s 2 4p (5p+4f+5f)+3d 10 4s4p 2 (4d+5s)+3d 10 4p 4 in the even parity system have been studied. Relativistic Hartree–Fock (HFR) and least squares fitted (LSF) parametric calculations were used to interpret the observed spectrum. 120 Levels of Br IV have now been established, 58 being new. Among 424 spectral lines, 277 are newly classified. The levels 4s4p 35 S 2 , 4s 2 4p4d 3 F 4 and 4p5p ( 3 P 0,1 , 3 D 1,2 , 3 S 1 ) are revised. We estimate the accuracy of our measured wavelength for sharp and unblended lines to be ±0.005 Å. The ionization limit is determined as 385,390±100 cm −1 (47.782±0.012 eV). -- Highlights: • The spectrum of Br was recorded on a 3-m spectrograph with triggered spark source. • Atomic transitions for Br IV were identified to established new energy levels. • CI calculations with relativistic corrections were made for theoretical predictions. • Weighted oscillator strength (gf) and transition probabilities (gA) were calculated. • Ionization potential of Br IV was determined experimentally

  2. Apresentação

    Directory of Open Access Journals (Sweden)

    Maria Elias Soares

    2016-01-01

    Full Text Available CONSELHO EDITORIAL DA REVISTA DE LETRAS ABUÊNDIA PADILHA PINTO Universidade Federal de Pernambuco abuendia@elogica.com.br CLÁUDIO LEITÃO FUNREI Univesidade Federal de Minas Gerais claudio@prover.com.br ENEIDA LEAL CUNHA Universidade Federal da Bahia leal@ufba.br / eneidalealcunha@uol.com.br JOÃO AZENHA JÚNIOR Universidade de São Paulo azenha@usp.br JOSÉ LUIZ FIORIN Universidade de São Paulo jolufi@uol.com.br LEONOR SCLIAR-CABRAL Universidade Federal de Santa Catarina lsc@th.com.br LUIZ ANTONIO MARCUSCHI Universidade Federal de Pernambuco lamarcuschi@uol.com.br MARIA DO SOCORRO SILVA DE ARAGÃO Universidade Federal do Ceará acaragao@terra.com.br MARIA HELENA MIRA MATEUS Universidade de Lisboa mhm@.ip.pt MARCIA ARBEX Universidade Federal de Minas Gerais marphi@larnet.com.br NADJA DA COSTA RIBEIRO MOREIRA Universidade Federal do Ceará nadja@ultranet.com.br PATRÍCIA ANNE VOUGHAN Universidade Federal do Ceará patricianne@uol.com.br ROLAND WALTER Universidade Federal de Pernambuco walter_roland@hotmail.com

  3. Formation of new halogenothiocarbonylsulfenyl halides, XC(S)SY, through photochemical matrix reactions starting from CS2 and a dihalogen molecule XY (XY=Cl2, Br2, or BrCl).

    Science.gov (United States)

    Tobón, Yeny A; Romano, Rosana M; Védova, Carlos O Della; Downs, Anthony J

    2007-05-28

    Isolation of a dihalogen molecule XY (XY=Cl2, Br2, or BrCl) with CS2 in a solid Ar matrix at about 15 K leads, by broad-band UV-vis photolysis (200BrC(S)Cl, BrCCl3, and :CBrCl, the following new molecules have also been identified as products of the various photoreactions: syn-ClC(S)SCl, anti-ClC(S)SCl, syn-BrC(S)SBr, anti-BrC(S)SBr, syn-ClC(S)SBr, anti-ClC(S)SBr, syn-BrC(S)SCl, anti-BrC(S)SCl, ClC(S)S*, BrCS*, and Br*...SCS. The IR spectra of these hitherto unknown species have been interpreted with reference to the predictions of ab initio (HF and MP2) and density functional theory (DFT) calculations. The results are analyzed in relation to the reaction pathways accessed by matrix photolysis.

  4. [Marine science in Revista de Biologia Tropical in its 50th anniversary].

    Science.gov (United States)

    Cortés, Jorge; Nielsen, Vanessa

    2002-01-01

    The first paper published in the Revista de Biología Tropical (RBT) on anything related to marine science was in 1963. Since then the number of marine-related papers has increased to 637, which represents 27% of the total production of RBT (excluding the Supplements), and 33% since 1979. Most publications are Full Articles on Ecology (135 papers). The marine ecosystem of which there is more publications is the coral reefs (28); and fish is the most studied taxonomic group (165). Almost half of the Supplements are marine related (12). The RBT must continue its efforts to maintain itself as a leading marine science publication in Latin America.

  5. Del “estylo” moderno a la arquitectura moderna: significados de lo moderno en las revistas brasileñas a casa y arquitetura e urbanismo (1923 y 1942

    Directory of Open Access Journals (Sweden)

    Juliana Cardoso Nery

    2016-12-01

    Full Text Available Este artículo se basa en resultados de la investigación que analizó un corpus de 225 ediciones de las revistas A CASA y ARQUITETURA E URBANISMO, publicado entre 1923 y 1942, cuyo fin consistió en identificar a través de los textos e imáge- nes divulgados las transformaciones de los significados y formas de expresión de “lo moderno”. Se busca, de este modo, entender cómo este término que albergaba una gama diversificada de expresiones se convirtió en una línea hegemó- nica, bastante definida en la arquitectura brasileña, que incluso admitió la denominación de Movimiento Moderno para ser identificado. El “estylo” moderno aparece en las revistas brasileñas a partir de la Exposición de Artes Industriales y Decorativas Modernas de 1925 en París, donde se presentaron diversas manifestaciones arquitectónicas que fueron, por cierto, identificadas indistintamente como “modernas” en las revistas analizadas. Estas variadas expresiones de lo moder- no, ignoradas por la mayoría de las narrativas históricas, fueron precisamente las responsables de conquistar y fertilizar -en gran parte debido a publicaciones de revistas especializadas- un campo árido en el cual florecerían luego las excep- cionales obras de la arquitectura moderna brasileña de matriz corbusiana, celebradas a nivel nacional e internacional. 

  6. High Defect Tolerance in Lead Halide Perovskite CsPbBr3.

    Science.gov (United States)

    Kang, Jun; Wang, Lin-Wang

    2017-01-19

    The formation energies and charge-transition levels of intrinsic point defects in lead halide perovskite CsPbBr 3 are studied from first-principles calculations. It is shown that the formation energy of dominant defect under Br-rich growth condition is much lower than that under moderate or Br-poor conditions. Thus avoiding the Br-rich condition can help to reduce the defect concentration. Interestingly, CsPbBr 3 is found to be highly defect-tolerant in terms of its electronic structure. Most of the intrinsic defects induce shallow transition levels. Only a few defects with high formation energies can create deep transition levels. Therefore, CsPbBr 3 can maintain its good electronic quality despite the presence of defects. Such defect tolerance feature can be attributed to the lacking of bonding-antibonding interaction between the conduction bands and valence bands.

  7. Brändin nykytila ja kehityskohtien identifiointi : case: Yritys X

    OpenAIRE

    Leinonen, Joonas

    2017-01-01

    Tämän opinnäytetyön tavoitteena on selvittää Yritys X:n brändin nykytila sekä identifioida eli tunnistaa sen heikkoudet sekä ryhmät, joiden keskuudessa brändimielikuva on heikompi. Tarkoituksena on käytännössä tarjota yritykselle osuus brändistrategiasuunnitelmasta, jonka avulla se pystyy keskittämään brändinehostustoimenpiteensä tiettyihin asioihin ja ryhmiin. Opinnäytetyön tutkimus suoritettiin määrällisenä tutkimuksena, sillä tavoitteena oli saada selville suuren yleisön käsitys Yrity...

  8. Revistas científicas e a contituição de campo de estudos de gênero: um olhar desde as "margens"

    Directory of Open Access Journals (Sweden)

    Maria Margaret Lopes

    2004-01-01

    Full Text Available http://dx.doi.org/10.1590/S0104-026X2004000300013 Este artigo trata do papel das revistas científicas na construção do campo de estudos de gênero. A partir da sociologia da ciência, da história da ciência e da experiência das autoras na publicação dos CADERNOS PAGU, examina-se a interação desta com a agenda feminista. Busca-se discutir o efeito das tensões e “negociações” na publicação de revistas científicas, além da constituição do campo de estudos de gênero. As ações políticas, as tensões, as negociações, o processo de “peer-review”, o “controle” do conhecimento científico e as normas editoriais são analisadas no quadro das publicações cientificas – a formação de um campo de pesquisa e a reprodução de centralidade/periferia no Brasil. Finalmente, aponta-se para questões relativas ao aumento da visibilidade da Revista, da diversificação do seu conteúdo e da cooperação com pesquisadores latino-americanos e de outras partes do mundo.

  9. Single crystal growth and surface chemical stability of KPb2Br5

    Science.gov (United States)

    Atuchin, V. V.; Isaenko, L. I.; Kesler, V. G.; Tarasova, A. Yu.

    2011-03-01

    Single crystal of KPb2Br5 has been grown using the Bridgman technique. Initially the synthesis of stoichiometric KPb2Br5 compound was performed from high purity bromide salts. Electronic structure of KPb2Br5 has been determined with X-ray photoelectron spectroscopy for powdered sample fabricated by grinding in air. Drastic chemical interaction of KPb2Br5 with atmosphere has not been detected. Chemical bonding in potassium- and lead-containing bromides is considered using binding energy differences ΔK=(BE K 2p3/2-BE Br 3d) and ΔPb=(BE Pb 4f7/2-BE Br 3d), respectively, as representative parameters.

  10. PbBr3 Perovskite Crystals

    KAUST Repository

    Wei, Tzu-Chiao

    2018-01-31

    Researchers have recently revealed that hybrid lead halide perovskites exhibit ferroelectricity, which is often associated with other physical characteristics, such as a large nonlinear optical response. In this work, the nonlinear optical properties of single crystal inorganic–organic hybrid perovskite CH3NH3PbBr3 are studied. By exciting the material with a 1044 nm laser, strong two-photon absorption-induced photoluminescence in the green spectral region is observed. Using the transmission open-aperture Z-scan technique, the values of the two-photon absorption coefficient are observed to be 8.5 cm GW−1, which is much higher than that of standard two-photon absorbing materials that are industrially used in nonlinear optical applications, such as lithium niobate (LiNbO3), LiTaO3, KTiOPO4, and KH2PO4. Such a strong two-photon absorption effect in CH3NH3PbBr3 can be used to modulate the spectral and spatial profiles of laser pulses, as well as to reduce noise, and can be used to strongly control the intensity of incident light. In this study, the superior optical limiting, pulse reshaping, and stabilization properties of CH3NH3PbBr3 are demonstrated, opening new applications for perovskites in nonlinear optics.

  11. Measurement of BR(Bu to phi K)/BR(Bu to J/psi K) at the collider detector at Fermilab

    Energy Technology Data Exchange (ETDEWEB)

    Napora, Robert A. [Johns Hopkins Univ., Baltimore, MD (United States)

    2004-01-01

    This thesis presents evidence for the decay mode B± → ΦK± in p$\\bar{p}$ collisions at √s = 1.96 TeV using (120 ± 7)pb-1 of data collected by the Collider Detector at Fermilab (CDF). This signal is then used to measure the branching ratio relative to the decay mode B± → J/ΨK±. The measurement starts from reconstructing the two decay modes: B± → ΦK±, where Φ → K+K- and B± → J/ΨK±, where J/Ψ → μ+μ-. The measurement yielded 23 ± 7 B± → ΦK± events, and 406 ± 26 B± → J/ΨK± events. The fraction of B± → J/ΨK± events where the J/Ψ subsequently decayed to two muons (as opposed to two electrons) was found to be fμμ = 0.839 ± 0.066. The relative branching ratio of the two decays is then calculated based on the equation: BR(B± → ΦK±)/BR(B± → J/ΨK±) = N ΦK/NΨK • fμμ BR(J/Ψ → μ+μ-)/BR(Φ → K+K-) ϵμμK/ϵKKK R(ϵiso). The measurement finds BR(B± → ΦK±)/BR(B± → J/ΨK±) = 0.0068 ± 0.0021(stat.) ± 0.0007(syst.). The B± → ΦK± branching ratio is then found to be BR(B± → ΦK±) = [6.9 ± 2.1(stat.) ± 0.8(syst.)] x 10-6. This value is consistent with similar measurements reported by the e+e- collider experiments BaBar[1], Belle[2], and CLEO[3].

  12. Dry-sliding tribological properties of ultrafine-grained Ti prepared by severe plastic deformation

    International Nuclear Information System (INIS)

    La Peiqing; Ma Jiqiang; Zhu, Yuntian T.; Yang Jun; Liu Weimin; Xue Qunji; Valiev, Ruslan Z.

    2005-01-01

    This paper reports the tribological properties of ultrafine-grained (UFG) Ti prepared by severe plastic deformation under dry sliding against AISI52100 steel in ambient environment and at varying load and sliding speed. Worn surfaces of the UFG Ti were examined with a scanning electron microscope and X-ray photoelectron spectroscope. It was found that the wear rate of the UFG Ti under dry sliding was of the magnitude of 10 -3 mm 3 m -1 , which is lower than that of the annealed coarse-grained (CG) Ti. The wear rate of the UFG Ti increased with the load, while it decreased with the sliding speed. The friction coefficient of the UFG Ti was in the range of 0.45-0.60, slightly lower than that of the CG Ti, and did not change with the load and sliding time after the initial transient period. The friction coefficient increased with increasing sliding speed to a maximum point and then decreased. The wear mechanism of the UFG Ti was micro-ploughing and delamination. The worn surfaces were covered by a TiO 2 layer. These results demonstrated that UFG structures improved the wear resistance but did not significantly affect the friction coefficient of Ti

  13. Análisis bibliométrico de las publicaciones sobre síndrome metabólico en dos revistas biomédicas colombianas de alto impacto

    OpenAIRE

    María Alejandra Recio; Nathalie Yepes; Freddy Moreno

    2017-01-01

    Objetivo: Realizar un análisis bibliométrico de las publicaciones sobre síndrome metabólico (SM) en las dos revistas biomédicas colombianas de mayor impacto. Materiales y métodos: Estudio descriptivo documental que realizó un análisis bibliométrico de las publicaciones sobre SM en las revistas Biomédica y Colombia Médica. Para el análisis se emplearon indicadores bibliométricos (tipo de artículo, año de publicación, información de los autores, universidad, tipo de universidad, ciudad, país, á...

  14. Inhibition of hydrogen oxidation by HBr and Br2

    DEFF Research Database (Denmark)

    Dixon-Lewis, Graham; Marshall, Paul; Ruscic, Branko

    2012-01-01

    O. Ab initio calculations were used to obtain rate coefficients for selected reactions of HBr and HOBr, and the hydrogen/bromine/oxygen reaction mechanism was updated. The resulting model was validated against selected experimental data from the literature and used to analyze the effect of HBr and Br2......The high-temperature bromine chemistry was updated and the inhibition mechanisms involving HBr and Br2 were re-examined. The thermochemistry of the bromine species was obtained using the Active Thermochemical Tables (ATcT) approach, resulting in improved data for, among others, Br, HBr, HOBr and Br...... on laminar, premixed hydrogen flames. Our work shows that hydrogen bromide and molecular bromine act differently as inhibitors in flames. For HBr, the reaction HBr+H⇌H2+Br (R2) is rapidly equilibrated, depleting HBr in favor of atomic Br, which is the major bromine species throughout the reaction zone...

  15. Metodología empleada en los artículos originales publicados sobre tabaquismo en cuatro revistas médicas españolas, (1985-1996

    Directory of Open Access Journals (Sweden)

    García López José Antonio

    1999-01-01

    Full Text Available FUNDAMENTOS: Siendo el diseño de una investigación el factor más importante de la calidad de los resultados obtenidos y el tabaquismo un tema prioritario de investigación, se describen las características metodológicas de los artículos originales sobre tabaquismo publicados en cuatro revistas médicas españolas. MÉTODOS: Se realizó un estudio descriptivo de los artículos originales sobre tabaquismo, procedentes de centros españoles, publicados en el período de 1985 a 1996 en las revistas Atención Primaria, Medicina Clínica (Barcelona, Revista Española de Salud Pública y Revista Clínica Española. RESULTADOS: De los 154 originales analizados, la mayoría trataron los temas de patrones de consumo (31,8% y del tabaquismo como factor de riesgo (27,3%, se realizaron a nivel municipal (41,7% o provincial (36,1%, con sujetos procedentes de la atención primaria (71,6%, que acudían a consulta (20,8%, con edades comprendidas entre 25 y 65 años (30,4% o mayores de 15 años (27,0%. Se emplearon encuestas para obtener la información (38,3% y tuvieron una duración de 12 meses (24,5% o más (19,3%. Los diseños más utilizados fueron descriptivos (67,5%, retrospectivos (79,2% y transversales (81,8%. CONCLUSIONES: La investigación española sobre tabaquismo debe cubrir ciertos aspectos temáticos no tratados suficientemente y cuidar ciertos aspectos metodológicos que mejoren la calidad de las publicaciones, necesidad apuntada también en otros estudios.

  16. [Revista Brasileira de História da Medicina, a pioneer in medical historiography].

    Science.gov (United States)

    Mendonça, Amanda; Nicolini, Gabriel Baptista

    2007-01-01

    I(It? This?) presents the general characteristics of the Revista Brasileira de História da Medicina, which contributed for the emergence of the field of medicine history in Brazil by inciting bibliographic production on the subject. The purpose of our analysis is to foster research on the history of medicine and of the sciences. From the description of the editorial aspects of the journal one can have an idea of how the research field was organized between 1940 and 1960. The periodical also allows for an overview of the exchange occurring between Brazilian and foreign historian physicians at that time.

  17. Picosecond Water Radiolysis at High Temperature. Br- Oxidation - Experiments and MC-Simulations

    International Nuclear Information System (INIS)

    Baldacchino, G.; Saffre, D.; Jeunesse, J.P.; Schmidhammer, U.; Larbre, J.P.; Mostafavi, M.; Beuve, M.; Gervais, B.

    2012-09-01

    Acidic solutions of bromhydric acid have been irradiated by picosecond pulses of 7 MeV-electrons provided by ELYSE accelerator (LCP Orsay). At elevated temperatures up to 350 deg. C, salts like NaBr or KBr usually precipitate and organic compound are decomposed. Another choice of OH-scavenger may be acidic halogenates like HBr or HCl. In this situation, the processes involving H + and Br - must be considerate: while hydrated electrons are scavenged by H + , . OH reacts with Br - . Then the formations of BrOH . and Br 2 .- have been investigated by using a devoted picosecond pump-probe setup. A dedicated small-size high temperature optical flow cell has been developed for fitting the picosecond duration of the electron pulses. This cell replaces the one used also with nanosecond resolution. The picosecond time resolution remains roughly not affected by the material crossed by electrons (0.4 mm of Inconel 718) and by the white light continuum (20 mm of Sapphire windows and 6 mm of liquid solution). Depending on the concentration of HBr, the growing up of the signal can be attributed to mainly BrOH . or Br2 .- . Actually with a relatively low scavenging power ([HBr] = 25 mM), Br 2 .- is formed with a reaction between Br . and Br - which delays of around 4 ns the apparition of Br2 .- . In this particular case we then assume the absorbance is due to BrOH . . With higher and higher temperature, from 100 deg. C to 300 deg. C, the rate constant of this formation is lightly less and less. This observation must be associated to the fact that the formation of BrOH . is actually equilibrium with a lower and lower equilibrium constant value when temperature is increased. This presentation tries to explain this fact in detail by also considering Monte Carlo simulations. This will allows following all transient species from ps to μs. (authors)

  18. Ultrafine grained steels processed by equal channel angular pressing

    International Nuclear Information System (INIS)

    Shin, Dong Hyuk; Park, Kyung-Tae

    2005-01-01

    Recent development of ultrafine grained (UFG) low carbon steels by using equal channel angular pressing (ECAP) and their room temperature tensile properties are reviewed, focusing on the strategies overcoming their inherent mechanical drawbacks. In addition to ferrite grain refinement, when proper post heat treatments are imposed, carbon atom dissolution from pearlitic cementite during ECAP can be utilized for microstructural modification such as uniform distribution of nano-sized cementite particles or microalloying element carbides inside UFG ferrite grains and fabrication of UFG ferrite/martensite dual phase steel. The utilization of nano-sized particles is effective on improving thermal stability of UFG low carbon ferrite/pearlite steel but less effective on improving its tensile properties. By contrast, UFG ferrite/martensite dual phase steel exhibits an excellent combination of ultrahigh strength, large uniform elongation and extensive strain hardenability

  19. Electronic structure of the CsPbBr3/polytriarylamine (PTAA) system

    Science.gov (United States)

    Endres, James; Kulbak, Michael; Zhao, Lianfeng; Rand, Barry P.; Cahen, David; Hodes, Gary; Kahn, Antoine

    2017-01-01

    The inorganic lead halide perovskite CsPbBr3 promises similar solar cell efficiency to its hybrid organic-inorganic counterpart CH3NH3PbBr3 but shows greater stability. Here, we exploit this stability for the study of band alignment between perovskites and carrier selective interlayers. Using ultraviolet, X-ray, and inverse photoemission spectroscopies, we measure the ionization energy and electron affinities of CsPbBr3 and the hole transport polymer polytriarylamine (PTAA). We find that undoped PTAA introduces a barrier to hole extraction of 0.2-0.5 eV, due to band bending in the PTAA and/or a dipole at the interface. p-doping the PTAA eliminates this barrier, raising PTAA's highest occupied molecular orbital to 0.2 eV above the CsPbBr3 valence band maximum and improving hole transport. However, IPES reveals the presence of states below the PTAA lowest unoccupied molecular level. If present at the CsPbBr3/PTAA interface, these states may limit the polymer's efficacy at blocking electrons in solar cells with wide band gap materials like CsPbBr3 and CH3NH3PbBr3.

  20. Br2 induced oxidative pore modification of a porous coordination network.

    Science.gov (United States)

    Ohtsu, Hiroyoshi; Kawano, Masaki

    2016-01-14

    Iodinated pores of a Zn-based coordination network were modified by Br2 oxidation to produce brominated pores in a polycrystalline-to-polycrystalline manner while maintaining the same network topology. Ab initio X-ray powder diffraction analysis and Raman spectroscopy revealed that the brominated pore can trap Br2 or I2 by strong σ/π-type interactions. A kinetic study in solution revealed that the pore modification by Br2 oxidation is much faster than the Br2 encapsulation process.

  1. Design guidelines for teaching about design guidelines for educational WWW-sites

    NARCIS (Netherlands)

    Collis, Betty; Winnips, Koos; Ottmann, Thomas; Tomek, Ivan

    1998-01-01

    This paper describes how the authors use a mixture of World Wide Web (WWW)-based functionalities and new didactics to teach educational technology students at the University of Twente (Netherlands) about the design of WWW-based learning environments. Topics discussed include: (1) the content of

  2. Polymorphism in 2-X-adamantane derivatives (X = Cl, Br).

    Science.gov (United States)

    Negrier, Philippe; Barrio, María; Tamarit, Josep Ll; Mondieig, Denise

    2014-08-14

    The polymorphism of two 2-X-adamantane derivatives, X = Cl, X = Br, has been studied by X-ray powder diffraction and normal- and high-pressure (up to 300 MPa) differential scanning calorimetry. 2-Br-adamantane displays a low-temperature orthorhombic phase (space group P212121, Z = 4) and a high-temperature plastic phase (Fm3̅m, Z = 4) from 277.9 ± 1.0 K to the melting point at 413.4 ± 1.0 K. 2-Cl-adamantane presents a richer polymorphic behavior through the temperature range studied. At low temperature it displays a triclinic phase (P1̅, Z = 2), which transforms to a monoclinic phase (C2/c, Z = 8) at 224.4 ± 1.0 K, both phases being ordered. Two high-temperature orientationally disordered are found for this compound, one hexagonal (P63/mcm, Z = 6) at ca. 241 K and the highest one, cubic (Fm3̅m, Z = 4), being stable from 244 ± 1.0 K up to the melting point at 467.5 ± 1.0 K. No additional phase appears due to the increase in pressure within the studied range. The intermolecular interactions are found to be weak, especially for the 2-Br-adamantane compound for which the Br···Br as well as C-Br···H distances are larger than the addition of the van der Waals radii, thus confirming the availability of this compound for building up diamondoid blocks.

  3. CeBr3 as a room-temperature, high-resolution gamma-ray detector

    International Nuclear Information System (INIS)

    Guss, Paul; Reed, Michael; Yuan Ding; Reed, Alexis; Mukhopadhyay, Sanjoy

    2009-01-01

    Cerium bromide (CeBr 3 ) has become a material of interest in the race for high-resolution gamma-ray spectroscopy at room temperature. This investigation quantified the potential of CeBr 3 as a room-temperature, high-resolution gamma-ray detector. The performance of CeBr 3 crystals was compared to other scintillation crystals of similar dimensions and detection environments. Comparison of self-activity of CeBr 3 to cerium-doped lanthanum tribromide (LaBr 3 :Ce) was performed. Energy resolution and relative intrinsic efficiency were measured and are presented.

  4. Revista Estudos Feministas Is Ten Years Old - A Brief History of Feminism in Brazil

    Directory of Open Access Journals (Sweden)

    Mirian Pillar Grossi

    2004-01-01

    Full Text Available This article is a report on the activities of Revista Estudos Feministas during its first phase at UFSC (1999-2002. It is divided into three parts: the first presents a brief review of literature about feminism and gender studies in Brazil; the second covers the move of Estudos Feministas from Rio de Janeiro to Santa Catarina, and the third presents some considerations on the role of this periodical in relation to the movement and to the field of gender, feminist and women’s studies in Brazil.

  5. Publicación científica de revistas electrónicas en formato EPUB

    OpenAIRE

    Ramírez Vega, Alexa; Abarca Fedullo, Felipe

    2017-01-01

    Como respuesta a las nuevas demandas tecnológicas, los editores de revistas científicas se han dado a la tarea de incorporar las publicaciones científicas en distintos formatos digitales como PDF (formato más utilizado), HTML enriquecido, EPUB y XML. Esto con el objetivo de beneficiarse de las ventajas de cada de uno de ellos, ya sea para aumentar la visibilidad en la web, generar indicadores de uso, mejorar la accesibilidad de los contenidos que faciliten la lectura a los usuarios. Por otra ...

  6. Identification of Yellow Pigmentation Genes in Brassica rapa ssp. pekinensis Using Br300 Microarray

    Directory of Open Access Journals (Sweden)

    Hee-Jeong Jung

    2014-01-01

    Full Text Available The yellow color of inner leaves in Chinese cabbage depends on its lutein and carotene content. To identify responsible genes for yellow pigmentation in leaves, the transcriptome profiles of white (Kenshin and yellow leaves (Wheessen were examined using the Br300K oligomeric chip in Chinese cabbage. In yellow leaves, genes involved in carotene synthesis (BrPSY, BrPDS, BrCRTISO, and BrLCYE, lutein, and zeaxanthin synthesis (BrCYP97A3 and BrHYDB were upregulated, while those associated with carotene degradation (BrNCED3, BrNCED4, and BrNCED6 were downregulated. These expression patterns might support that the content of both lutein and total carotenoid was much higher in the yellow leaves than that in the white leaves. These results indicate that the yellow leaves accumulate high levels of both lutein and β-carotene due to stimulation of synthesis and that the degradation rate is inhibited. A large number of responsible genes as novel genes were specifically expressed in yellow inner leaves, suggesting the possible involvement in pigment synthesis. Finally, we identified three transcription factors (BrA20/AN1-like, BrBIM1, and BrZFP8 that are specifically expressed and confirmed their relatedness in carotenoid synthesis from Arabidopsis plants.

  7. Reactor BR2. Introduction

    International Nuclear Information System (INIS)

    Gubel, P.

    2002-01-01

    The BR2 materials testing reactor is one of SCK-CEN's most important nuclear facilities. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. In 2001, the reactor was operated for a total of 123 days at a mean power of 59 MW in order to satisfy the irradiation conditions of the internal and external programmes using mainly the CALLISTO PWR loop. The mean consumption of fresh fuel elements was 5.26 per 1000 MWd. Main achievements in 2001 included the development of a three-dimensional full-scale model of the BR2 reactor for simulation and prediction of irradiation conditions for various experiments; the construction of the FUTURE-MT device designed for the irradiation of fuel plates under representative conditions of geometry, neutron spectrum, heat flux and thermal-hydraulic conditions and the development of in-pile instrumentation and a data acquisition system

  8. Reactor BR2. Introduction

    Energy Technology Data Exchange (ETDEWEB)

    Gubel, P

    2002-04-01

    The BR2 materials testing reactor is one of SCK-CEN's most important nuclear facilities. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. In 2001, the reactor was operated for a total of 123 days at a mean power of 59 MW in order to satisfy the irradiation conditions of the internal and external programmes using mainly the CALLISTO PWR loop. The mean consumption of fresh fuel elements was 5.26 per 1000 MWd. Main achievements in 2001 included the development of a three-dimensional full-scale model of the BR2 reactor for simulation and prediction of irradiation conditions for various experiments; the construction of the FUTURE-MT device designed for the irradiation of fuel plates under representative conditions of geometry, neutron spectrum, heat flux and thermal-hydraulic conditions and the development of in-pile instrumentation and a data acquisition system.

  9. A Revista Perspectivas em Ciência da Informação e seu panorama científico no período 2010 a 2014

    Directory of Open Access Journals (Sweden)

    Wanderley Pivatto Brum

    Full Text Available RESUMO O presente trabalho tem por objetivo analisar a produção da Revista Perspectivas em Ciência da Informação, no período de 2010 a 2014, tendo como critérios os apontados pela Scientific Eletronic Library Online (SciELO como política e visibilidade dos periódicos brasileiros. Caracteriza-se essa investigação como documental. Para a análise, buscou-se observar, no período analisado da revista, as categorias: artigos, referências, autores dos artigos, editoração e financiamento. A partir da análise empreendida, os resultados apontam predominância de artigos originais, redigidos em português e as fontes referenciadas, equilibra-se por livros e textos em português. Conclui-se que, há uma predominância de artigos publicados em português, o que poderá ser repensado pela revista, caso a opção da mesma seja pela internacionalização; assim, nesse caso, há a necessidade da publicação de artigos principalmente em língua inglesa, ampliação do número de avaliadores e membros do corpo editorial vinculados a instituições estrangeiras.

  10. Aagesta-BR3 Decommissioning Cost. Comparison and Benchmarking Analysis

    International Nuclear Information System (INIS)

    Varley, Geoff

    2002-11-01

    This report presents the results of decommissioning cost analyses focusing on discrete working packages within the decommissioning program of the BR3 reactor in Mol, Belgium and comparison of them with cost estimate data for the Aagesta research reactor in Sweden. The specific BR3 work packages analysed were: Primary coolant piping decontamination; Primary coolant piping dismantling; Vulcain reactor internals dismantling; Westinghouse reactor internals dismantling; Reactor vessel dismantling. The main conclusions to be drawn from the analyses are that: The fixed costs related to decontamination and dismantling activities generally are a very important part of the overall resources needed to execute the work, with the Reactor Pressure Vessel (RPV) seemingly being significantly more demanding than other major components. Cutting activities tend to need something like 150 to 200 labour hours per m 2 of reactor equipment dismantled. Fixed investment costs to set up the equipment needed to cut up major vessels or internals appear to be in the range of MSEK 4 to 8. Consumables costs vary according to the nature of the equipment being dismantled. The thicker the metal being cut, the higher the attrition rate for things such as cutting blades. The range of consumables costs at BR3 have been in the range of MSEK 0.1 to 0.2/m 2 dismantled. The extent of detailed information available in the 1996 Aagesta estimate is not sufficient to enable a full comparison with the BR3 decommissioning results. A global first comparison has been attempted by summing the resources expended on the BR3 work packages described in this report with the combined dismantling data presented in the 1996 Aagesta cost estimate report. Very broadly the cost of decontamination plus dismantling of the main process equipment at Aagesta appears to be in the order of MSEK 70, of which MSEK 4 is labour on preparatory/planning work, MSEK 40 is labour on actual decontamination and dismantling and MSEK 25 is

  11. Structure and bonding of transition metal-boryl compounds. Theoretical study of [(PH3)2(CO)ClOs-BR2] and [(PH3)2(CO)2ClOs-BR2] (BR2 = BH2, BF2, B(OH)2, B(OCH=CHO), Bcat).

    Science.gov (United States)

    Giju, K T; Bickelhaupt, F M; Frenking, G

    2000-10-16

    Quantum chemical DFT calculations using the B3LYP functionals have been carried out for the electronically unsaturated 16 VE five-coordinate osmium boryl-complexes [(PH3)2(CO)ClOs-BR2] and the 18 VE six-coordinate complexes [(PH3)2(CO)2ClOs-BR2] with BR2 = BH2, BF2, B(OH)2, B(OHC=CHO), and Bcat (cat = catecholate O2C6H4). The bonding situation of the Os-BR2 bond was analyzed with the help of the NBO partitioning scheme. The Os-B bond dissociation energies of the 16 VE complexes are very high, and they do not change very much for the different boryl ligands. The 18 VE complexes have only slightly lower bond energies than the 16 VE species. The Os-B bond in both classes of compounds is provided by a covalent sigma-bond which is polarized toward osmium and by strong charge attraction. Os-->B pi-donation is not important for the Os-B binding interactions, except for the Os-BH2 complexes. The stability of the boryl complexes [Os]-BR2 comes mainly from BB pi-donation. The intraligand charge distribution of the BR2 group changes little when the Os-B bond is formed, except for BH2. The CO ligand in [(PH3)2(CO)2ClOs-BR2] which is trans to BR2 has a relatively weak bond to the osmium atom.

  12. Les Robins des bois de l'ère numérique | CRDI - Centre de ...

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

    3 févr. 2011 ... En février 2002, la municipalité de Porto Alegre dans le sud du Brésil ... chaque semaine le RETS (Revista do terceiro setor), magazine électronique ... en direct sur les politiques publiques en matière d'inclusion numérique.

  13. Magnetic diagnostic plasma position in the TCA/BR tokamak

    International Nuclear Information System (INIS)

    Galvao, R.M.O.; Kuznetsov, Yu.K.; Nascimento, I.C.

    1996-01-01

    The cross-section of the plasma column is TCA/BR has a nearly circular plasma shape. This allows implementation of simplified methods of magnetic diagnostics. Although these methods were in may tokamaks and are well described, their accuracies are not clearly defined because the very simplified theoretical model of plasma equilibrium on which they are based differs from the real conditions in tokamaks like TCA/BR. In this paper we present the methods of plasma position diagnostics in TCA/BR from external magnetic measurements with an error analysis. (author). 4 refs., 3 figs

  14. Imagens sedutoras da modernidade urbana: reflexões sobre a construção de um novo padrão de visualidade urbana nas revistas ilustradas na década de 1950

    Directory of Open Access Journals (Sweden)

    Charles Monteiro

    2007-06-01

    Full Text Available Este artigo contém resultados parciais de pesquisa em andamento sobre a construção de uma nova visualidade urbana na década de 1950 nas revistas ilustradas brasileiras, visando problematizar a forma como esses veículos de comunicação geriram e deram a ver através da fotografia a imagem de um país em transformação e em acelerado processo de urbanização. Inicialmente, abordamse questões gerais sobre a forma de edição das revistas ilustradas e o formato das fotorreportagens para, posteriormente, apresentar-se um estudo de caso sobre a Revista do Globo nos anos 50.This paper presents partial results of an ongoing research on the creation of a new urban perception in the 1950s illustrated magazines in Brazil. It aims to cast doubt on the way these means of communication managed and worked in the image of a country at a fast pace of change and urban development process through photographs. Firstly, a wide range of matters concerning the way these magazines were edited alongside the layout of the photos in the articles are discussed. After that, a case study about the Revista do Globo in the 50s is presented.

  15. Tapa de revista y home page: Dos modelos para la apropiación de contenidos

    OpenAIRE

    Ornani, Carla

    2011-01-01

    Fil: Traversa, Oscar. Universidad Nacional de las Artes. Área Transdepartamental de Crítica de Artes; Argentina Fil: Traversa, Oscar. Universidad de Buenos Aires. Facultad de Ciencias Sociales; Argentina Fil: Orlando, Daniela. Universidad Nacional de las Artes. Área Transdepartamental de Crítica de Artes; Argentina El objetivo del presente trabajo es el de dar cuenta de las diferencias morfológicas y enunciativas de dos dispositivos de comunicación: las tapas de revistas en soporte t...

  16. Global observations of tropospheric BrO columns using GOME-2 satellite data

    Science.gov (United States)

    Theys, N.; van Roozendael, M.; Hendrick, F.; Yang, X.; de Smedt, I.; Richter, A.; Begoin, M.; Errera, Q.; Johnston, P. V.; Kreher, K.; de Mazière, M.

    2011-02-01

    Measurements from the GOME-2 satellite instrument have been analyzed for tropospheric BrO using a residual technique that combines measured BrO columns and estimates of the stratospheric BrO content from a climatological approach driven by O3 and NO2 observations. Comparisons between the GOME-2 results and BrO vertical columns derived from correlative ground-based and SCIAMACHY nadir observations, present a good level of consistency. We show that the adopted technique enables separation of stratospheric and tropospheric fractions of the measured total BrO columns and allows quantitative study of the BrO plumes in polar regions. While some satellite observed plumes of enhanced BrO can be explained by stratospheric descending air, we show that most BrO hotspots are of tropospheric origin, although they are often associated to regions with low tropopause heights as well. Elaborating on simulations using the p-TOMCAT tropospheric chemical transport model, this result is found to be consistent with the mechanism of bromine release through sea salt aerosols production during blowing snow events. No definitive conclusion can be drawn however on the importance of blowing snow sources in comparison to other bromine release mechanisms. Outside polar regions, evidence is provided for a global tropospheric BrO background with column of 1-3 × 1013 molec cm-2, consistent with previous estimates.

  17. Aagesta-BR3 Decommissioning Cost. Comparison and Benchmarking Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Varley, Geoff [NAC International, Henley on Thames (United Kingdom)

    2002-11-01

    This report presents the results of decommissioning cost analyses focusing on discrete working packages within the decommissioning program of the BR3 reactor in Mol, Belgium and comparison of them with cost estimate data for the Aagesta research reactor in Sweden. The specific BR3 work packages analysed were: Primary coolant piping decontamination; Primary coolant piping dismantling; Vulcain reactor internals dismantling; Westinghouse reactor internals dismantling; Reactor vessel dismantling. The main conclusions to be drawn from the analyses are that: The fixed costs related to decontamination and dismantling activities generally are a very important part of the overall resources needed to execute the work, with the Reactor Pressure Vessel (RPV) seemingly being significantly more demanding than other major components. Cutting activities tend to need something like 150 to 200 labour hours per m{sup 2} of reactor equipment dismantled. Fixed investment costs to set up the equipment needed to cut up major vessels or internals appear to be in the range of MSEK 4 to 8. Consumables costs vary according to the nature of the equipment being dismantled. The thicker the metal being cut, the higher the attrition rate for things such as cutting blades. The range of consumables costs at BR3 have been in the range of MSEK 0.1 to 0.2/m{sup 2} dismantled. The extent of detailed information available in the 1996 Aagesta estimate is not sufficient to enable a full comparison with the BR3 decommissioning results. A global first comparison has been attempted by summing the resources expended on the BR3 work packages described in this report with the combined dismantling data presented in the 1996 Aagesta cost estimate report. Very broadly the cost of decontamination plus dismantling of the main process equipment at Aagesta appears to be in the order of MSEK 70, of which MSEK 4 is labour on preparatory/planning work, MSEK 40 is labour on actual decontamination and dismantling and MSEK

  18. Physical adsorption and charge transfer of molecular Br2 on graphene.

    Science.gov (United States)

    Chen, Zheyuan; Darancet, Pierre; Wang, Lei; Crowther, Andrew C; Gao, Yuanda; Dean, Cory R; Taniguchi, Takashi; Watanabe, Kenji; Hone, James; Marianetti, Chris A; Brus, Louis E

    2014-03-25

    We present a detailed study of gaseous Br2 adsorption and charge transfer on graphene, combining in situ Raman spectroscopy and density functional theory (DFT). When graphene is encapsulated by hexagonal boron nitride (h-BN) layers on both sides, in a h-BN/graphene/h-BN sandwich structure, it is protected from doping by strongly oxidizing Br2. Graphene supported on only one side by h-BN shows strong hole doping by adsorbed Br2. Using Raman spectroscopy, we determine the graphene charge density as a function of pressure. DFT calculations reveal the variation in charge transfer per adsorbed molecule as a function of coverage. The molecular adsorption isotherm (coverage versus pressure) is obtained by combining Raman spectra with DFT calculations. The Fowler-Guggenheim isotherm fits better than the Langmuir isotherm. The fitting yields the adsorption equilibrium constant (∼0.31 Torr(-1)) and repulsive lateral interaction (∼20 meV) between adsorbed Br2 molecules. The Br2 molecule binding energy is ∼0.35 eV. We estimate that at monolayer coverage each Br2 molecule accepts 0.09 e- from single-layer graphene. If graphene is supported on SiO2 instead of h-BN, a threshold pressure is observed for diffusion of Br2 along the (somewhat rough) SiO2/graphene interface. At high pressure, graphene supported on SiO2 is doped by adsorbed Br2 on both sides.

  19. Las revistas universitarias en el marco de los criterios de evaluación de la actividad investigadora en España

    Directory of Open Access Journals (Sweden)

    Ruíz-Pérez, Rafael

    2015-06-01

    Full Text Available The evaluation of scientific performance in Spain through the “national accreditation” system and the sexennials (a research assessment program that evaluates academic staff every six years does not only confer social and personal recognition to professors and researchers, but it also has an influence over their future academic careers. This is a controversial issue where the greatest criticism centers on academic journals and how they are evaluated. Within academic journals, university journals are those considered to be the most disadvantaged. In this article we explore the state of Spanish academic journals from the perspective of how evaluation criteria are applied by different agencies, using several indicators: regularity, periodicity, peer review, their presence in journal impact indexes, and their position in various journal assessment systems. Our results have detected significant deficiencies, but although there are some differences when comparing university and non-university journals, they are not significant. These conclusions can be of interest for evaluation agencies in order to consider rectifying criteria that currently penalize university publishing directly or indirectly.La evaluación de la actividad investigadora en España mediante la “acreditación nacional” y los “sexenios de investigación”, no solo otorga reconocimiento personal y social a profesores e investigadores sino que condiciona su carrera académica, de ahí que se trate de un asunto polémico. Las críticas más contundentes se centran en las revistas científicas y la forma de evaluarlas, siendo las revistas universitarias las que se sienten especialmente perjudicadas frente a otros colectivos. Se explora la situación de las revistas universitarias españolas en relación con los criterios de evaluación de las agencias mediante distintos indicadores: regularidad, periodicidad, peer review, presencia en índices de impacto y situación en los

  20. Características en contenido y afiliación de Notas Clínicas publicadas en la revista CIMEL, 2001- 2009

    Directory of Open Access Journals (Sweden)

    Juan José Montenegro-Idrogo

    2010-01-01

    Full Text Available Objetivo, Determinar frecuencia y características de contenido y afiliación de Notas clínicas (casos clínicos publicados en la Revista CIMEL período 2001-2009. Diseño, Descriptivo, bibliométrico Lugar, Se utilizó el sistema de base de datos de la biblioteca central de la UNMSM. Participantes, artículos publicados en la revista CIMEL como Notas clínicas (Casos clínicos en el período citado. Intervenciones, Se determinó la frecuencia según años, además de las características de afiliación según país, región, y de contenido (tema de especialidad y condición de importancia en publicación. Principales medidas de resultados, Distribución de frecuencias y gráfico lineal para representar producción de esta categoría en la revista según años. Resultados, Total de notas clínicas (n=34, hubo mayor número de publicaciones a partir del año 2005. Mayor porcentaje de notas clínicas según país de afiliación fue: Venezuela (35,3%, Colombia (17,6%, Chile (17,6%, Bolivia (11,8%, y según tema de especialidad, Cirugía (21%, Oncología (14,7% y Hematología (11,8%. Las condiciones más frecuentes que justifican publicación de notas clínicas son: enfermedad rara o infrecuente (79,4% y presentación o complicación inusual de enfermedad (26,5%. La distribución de autores más frecuente fue, un médico y más de un estudiante de medicina (47,5%. Conclusiones, La frecuencia de publicación de notas clínicas en la revista CIMEL ha aumentado desde la periodicidad semestral, siendo la principal justificación de publicación, presentación de enfermedad rara o infrecuente. Es preocupante no refleje la participación de la mayoría de instituciones estudiantiles afiliadas a la Federación del cual es órgano oficial de difusión.