Search results for "amer"
showing 10 items of 2105 documents
Histone H3 Lysine 4 Mono-methylation does not Require Ubiquitination of Histone H2B
2005
The yeast Set1-complex catalyzes histone H3 lysine 4 (H3K4) methylation. Using N-terminal Edman sequencing, we determined that 50% of H3K4 is methylated and consists of roughly equal amounts of mono, di and tri-methylated H3K4. We further show that loss of either Paf1 of the Paf1 elongation complex, or ubiquitination of histone H2B, has only a modest effect on bulk histone mono-methylation at H3K4. Despite the fact that Set1 recruitment decreases in paf1delta cells, loss of Paf1 results in an increase of H3K4 mono-methylation at the 5' coding region of active genes, suggesting a Paf1-independent targeting of Set1. In contrast to Paf1 inactivation, deleting RTF1 affects H3K4 mono-methylation…
Trending topics in orthodontics research during the last three decades: A longitudinal bibliometric study on the top‐cited articles
2020
Objective: To perform a bibliometric analysis on the top-cited articles over the last three decades from 1989 to 2018, using a longitudinal set-up, in order to analyse how articles' features have evolved over time. Setting and sample population: A sample of 312 articles divided into three subgroups of 104 top-cited articles for each decade were included. The h-index value was used to determine the sample size. Materials and methods: The articles were identified through a search in the category "dentistry oral surgery and medicine" of the Web of Science database. The information relative to the articles was collected. Descriptive statistics was used to describe the articles and the journals;…
Los tiempos de la violencia en Chile: La memoria obstinada de Patricio Guzmán
2009
Análisis del modo como La memoria obstinada de Patricio Guzmán, trataba de desbloquear la memoria social de la violencia construyendo un documental que hiciera dialogar el discurso de los supervivientes con elementos del archivo y con imágenes del pasado. Se expone cómo, a través de sutiles operaciones discursivas, el documental trata de traer al presente una experiencia de la represión que buena parte de la sociedad trataba de situar en el pasado.
La evolución de la adhesión a dentina
2004
-Isabel.Camps@uv.es Se realiza una revisión a la historia de la adhesión comenzando en las culturas precolombinas ("era pre-adhesiva"), para continuar en la "era adhesiva" con las aportaciones de Buonocuore y la aparición del Bis-GMA, pasando por la incorporación al mercado dental de los fosfatos, los oxalatos, el sistema Gluma. Se analiza también la descripción la capa híbrida por Nakabayashi, después aparecen los primers acuosos y la hibridación de tejidos duras hasta llegar a los sistemas adhesivos autograbadores. An overview of dentin bonding history is done by the author since early south American cultures (pre-adhesive age) to continued in the adhesive age with Buonoccore's findings a…
De Habsburgos a Borbones. Legistas y canonistas en la Real Universidad de México
2020
A lo largo de todo el periodo colonial, la Universidad de México fue mayoritariamente canonista en cuanto a las preferencias de sus estudiantes juristas. Sin embargo, hemos podido comprobar que para el tránsito de los siglos XVII a XVIII se aprecia alguna diferencia o particularidad, en cuanto que, respecto a algunos parámetros, las referencias sobre Leyes llegan a superar a las de Cánones. La cronología de esta singularidad resulta coincidente con los cambios en la política de nombramiento de las autoridades novohispanas, especialmente para la Audiencia. En este estudio intentamos acercarnos a la relación explicativa que pudiera haber entre estas dos realidades, cuestionándonos algunas pos…
A Latin American Casanova? Sex, Gender, Enlightenment and Revolution in the Life and Writings of Francisco de Miranda (1750–1816)
2022
This paper looks from a gender perspective at the elusive figure, complex personality and myth of Francisco de Miranda, enlightened traveller and Precursor of Latin American independence. By analysing Miranda's personal archive as his own carefully crafted creation, it pursues three closely connected issues insufficiently interpreted in historical perspective: the forms of masculinity he embodied and those from which he distanced himself, his connections with women and the role that gender played in his assessments of the countries he visited and wrote about. Miranda's trajectory and self-image trace an evolution (from mondain seducer and enlightened reader and thinker, to revolutionary sym…
Assessing commodity price risks and terms of trade exposures in emerging and developing countries
2020
This paper provides novel evidence on commodity exposure (impacts of commodity price and terms of trade fluctuations) amongst 46 emerging and developing countries (EMDCs) in Africa, Asia and the Latin American and Caribbean (LAC) region. We focus on the exposures of six macroeconomic variables to the commodity prices and terms of trade, based on the real business cycle (RBC) theory. Our empirical results indicate that, overall, about 10% of the macroeconomic variation amongst the EMDCs is due to commodity market-related exposures. The Asian and LAC economies are especially sensitive to changes in commodity prices. The changes in the prices of world trade have an imminent impact on non-commo…
An ‘Authoritarian Nexus’? China’s Alleged Special Relationship with Autocratic States in Latin America
2015
China’s rise is often interpreted as a harbinger of a new era in world politics and raises the question if such a power transition may impact upon patterns of democratic rule across the globe. There is growing interest in whether China acts as an outside stabilizer for other authoritarian regimes. This paper contributes to the emerging literature on the international dimension of autocratic rule by focusing on Chinese Latin American policy. Using the method of structured focused comparisons, we want to assess whether China’s relations towards the Latin American autocracies Cuba and Venezuela differ from those with structurally similar, but democratic cooperation partners in the region, name…
Doña Marina, otra vez. Las contradicciones de la propuesta de Inés M. Stranger en Malinche
2019
La obra Malinche, de Inés M. Stranger, configura una propuesta de reescritura de la Malinche como figura mítica incorporada al imaginario cultural hispanoamericano, que perdura hasta la actualidad. Es común el empleo de esta figura en diversos autores contemporáneos que abordan cuestiones relativas a las identidades nacionales latinoamericanas en sus textos. Algunas autoras han utilizado, además, este personaje para elaborar una reescritura del mito con perspectiva crítica, en relación al modo en que este califica a un modelo de mujer indígena con toda una serie de significados negativos. La obra de Inés M. Stranger a la que se dedica el presente trabajo tiene unos presupuestos similares. E…
Sexism, romantic love and gender inequality. A study of Latin American adolescents living in Spain
2019
Este trabajo examina el papel de los factores sociodemográficos como determinantes de las creencias y actitudes sexistas y las percepciones distorsionadas sobre el amor romántico, y analiza la relación entre el sexismo hostil y el sexismo benevolente y las creencias en mitos del amor romántico, según el Índice de Desigualdad de Género (idg), en una muestra de 203 adolescentes latinoamericanos residentes en Valencia (España). This paper examines the role of socio-demographic factors determining both sexist beliefs and attitudes and distorted perceptions of romantic love. Moreover, the relationship between hostile and benevolent sexism, and the belief in myths about romantic love is analyzed …