Integrative genetic map of repetitive DNA in the sole Solea senegalensis genome shows a Rex transposon located in a proto-sex chromosome

Repetitive sequences play an essential role in the structural and functional evolution of the genome, particularly in the sexual chromosomes. The Senegalese sole (Solea senegalensis) is a valuable flatfish in aquaculture albeit few studies have addressed the mapping and characterization of repetitive DNA families. Here we analyzed the Simple Sequence Repeats (SSRs) and Transposable elements (TEs) content from fifty-seven BAC clones (spanning 7.9 Mb) of this species, located in chromosomes by multiple fluorescence in situ hybridization (m-BAC-FISH) technique. The SSR analysis revealed an average density of 675.1 loci per Mb and a high abundance (59.69%) of dinucleotide coverage was observed, being 'AC' the most abundant. An SSR-FISH analysis using eleven probes was also carried out and seven of the 11 probes yielded positive signals. 'AC' probes were present as large clusters in almost all chromosomes, supporting the bioinformatic analysis. Regarding TEs, DNA transposons (Class II) were the most abundant. In Class I, LINE elements were the most abundant and the hAT family was the most represented in Class II. Rex/Babar subfamily, observed in two BAC clones mapping to chromosome pair 1, showed the longest match. This chromosome pair has been recently reported as a putative sexual proto-chromosome in this species, highlighting the possible role of the Rex element in the evolution of this chromosome. In the Rex1 phylogenetic tree, the Senegalese sole Rex1 retrotransposon could be associated with one of the four major ancient lineages in fish genomes, in which it is included O. latipes

Once bitten, not necessarily shy? Determinants of foreign market re-entry commitment strategies

We investigate foreign market re-entry commitment strategies, namely the changes in the modes of operation (commitment) undertaken by multinational enterprises (MNEs) as they return to foreign markets from which they had previously exited. We combine organisational learning theory with the institutional change literature to examine the antecedents of re-entry commitment strategies. From an analysis of 1,020 re-entry events between 1980 and 2016, we find that operation mode prior to exit is a strong predictor of subsequent re-entry mode. Contrary to the predictions of learning theory, we did not find support for the effect of experience accumulated during the initial market endeavour on the re-entry commitment strategies of MNEs. In turn, exit motives significantly impact on the re-entrants' decision to re-enter via a different mode of operation, by either increasing or decreasing their commitment to the market. We show that re-entrants do not replicate unsuccessful operation mode strategies if they had previously underperformed in the market. When favourable host institutional changes occur during the time-out period re-entrants tend to increase commitment in the host market irrespective of the degree of prior experience accumulated in the market

La renovación de la palabra en el bicentenario de la Argentina : los colores de la mirada lingüística

El libro reúne trabajos en los que se exponen resultados de investigaciones presentadas por investigadores de Argentina, Chile, Brasil, España, Italia y Alemania en el XII Congreso de la Sociedad Argentina de Lingüística (SAL), Bicentenario: la renovación de la palabra, realizado en Mendoza, Argentina, entre el 6 y el 9 de abril de 2010. Las temáticas abordadas en los 167 capítulos muestran las grandes líneas de investigación que se desarrollan fundamentalmente en nuestro país, pero también en los otros países mencionados arriba, y señalan además las áreas que recién se inician, con poca tradición en nuestro país y que deberían fomentarse. Los trabajos aquí publicados se enmarcan dentro de las siguientes disciplinas y/o campos de investigación: Fonología, Sintaxis, Semántica y Pragmática, Lingüística Cognitiva, Análisis del Discurso, Psicolingüística, Adquisición de la Lengua, Sociolingüística y Dialectología, Didáctica de la lengua, Lingüística Aplicada, Lingüística Computacional, Historia de la Lengua y la Lingüística, Lenguas Aborígenes, Filosofía del Lenguaje, Lexicología y Terminología

A prospective video-based observational and analytical approach to evaluate management during brain tumour surgery at a university hospital

International audienc

Impact of concept mapping and learners' use of the concept map on hypertext processing and learning

International audienc

Obtención y caracterización de sustancias húmicas de lombricompuestos y su uso en recuperación de suelos erosionados

IP 1120-07-001-92PONENCIA(S) EN CONGRESO: Evaluacion de la calidad de cuatro lombricompuestos / Juan Carlos Menjivar Flores,;Jairo Gomez Zambrano. -- p. 181-183. -- En: Congreso Colombianode la Ciencia del Suelo (7 : 1994 oct. :;Bucaramanga) -- De los residuos a los productos organicos/ Jairo Gomez Zambrano, Jose Carlos Miranda, Juan;Carlos Menjivar, Milena Carmen Carrillo, Armando Torrente.--En: Curso Master Internacional Aprovechamiento;de Residuos Organicos (1996 jun. 18-21 : Palmira) -- ARTICULO(S)EN REVISTA: Metodologia para la extraccion de;sustancias humicas de lombricompuestos y evaluacion de susrendimientos /Armando Torrente Trujillo, Jairo;Gomez Zambrano. -- En: Revista Suelos Ecuatoriales. -- Vol. 25(1995); p.43-46. -- ISSN 05625351 --;Rendimientos de sustancias humicas de ocho lombricompuestos /Jairo GomezZambrano, Armando Torrente Trujillo,;Jose Carlos Miranda V. -- En: Acta agronomica. -- Vol. 45(1995); p. 45-50. -- ISSN 01202812 --;Caracterizacion de los acidos humicos extraidos de cuatrolombricompuestosy su efecto sobre la germinacion de;semillas de maiz Zea mays L., algodon Gossypium hirsutum ytomate Lycopersicon esculentum L. / Milena Carmen;Carrillo, Jairo Gomez Z., Jose C. Miranda. -- En: Acta agronomica. -- Vol.46, no. 1-4 (ene.-dic. 1996); p.;30-36. -- ISSN 01202812 -- CAPITULO(S) EN LIBRO: Physical,chemical and biological quality of four;lombricomposts. -- p.1399-1401. -- En: The science of composting/ European Commission International Symposium; edited by Marco de Bertoldi, Paolo Sequi, Bert Lemmes, TizianoPapi. --London : Blackie Academic &;Professional, 1996. -- 2 v. : il. ; 23 cm. -- ISBN 0751403830--FOLLETO(S): Productos derivados de;lombricompuestos / Jairo Gomez Zambrano. -- Palmira : Universidad Nacionalde Colombia, 1999. -- 12 p. : il. ;24 cm