An optimization problem for the first weighted eigenvalue problem plus a potential

In this paper, we study the problem of minimizing the first eigenvalue of the $p-$Laplacian plus a potential with weights, when the potential and the weight are allowed to vary in the class of rearrangements of a given fixed potential $V_0$ and weight $g_0$. Our results generalized those obtained in [9] and [5].Comment: 15 page

Sobre la traducción y edición de literatura griega moderna y contemporánea en España (1993-2005)

In order to study the development of the Spanish reception of Modern and Contemporary Greek literature in the second half of the twentieth century and approach more fully the present-day state of the question, it is necessary to avoid a consideration of these five decades as if they constituted a homogeneous period. For the objectives of our study it is posible to distinguish three phases. The first covers the period from the first Spanish editions of the work of Casantsakis (1959) and the poetry of C.P. Cavafis (1962) to the death of the dictator and the beginning of the Spanish transition to democracy (1975). The second one covers the years from 1976 (first publication of Cavafy’s 154 canon poems a few months after Franco´s death) to 1992, an emblematic year in the recent history of Spain. The third phase goes from 1993 to 2005, year in which Liber, the International Book Fair in Madrid, was dedicated to Greece

"El Liberal", de Sevilla (1901-1936): un diario independiente en la Andalucía anterior de la Guerra Civil

Fundado en 1901 por el célebre trust de prensa dirigido por Miguel Moya, El Liberal de Sevilla se convirtió en el principal diario independiente editado en Andalucía con anterioridad a la Guerra Civil. Dirigido desde 1909 por José Laguillo y perteneciente desde los años veinte al grupo editorial de los hermanos Busquets, El Liberal llegó a alcanzar una tirada de aproximadamente 50.000 ejemplares diarios. En este artículo se analiza su trayectoria durante la Dictadura de Primo de Rivera y la Segunda República, la composición de su redacción y las vicisitudes de este gran diario, parte de cuyo archivo se conserva actualmente en el Centro Documental de la Memoria Histórica de Salamanca

A daily newspaper between the Restoration and the Second Republic: "El Noticiero Sevillano" (1893-1933)

Fundando en 1893 por el periodista valenciano Francisco Peris Mencheta, "El Noticiero Sevillano" fue probablmenete el primero gran diario de información general editado en la capital de Andalucía conforme a los criterios del nuevo periodismo, en expansión desde finales del siglo XIX. Su publicación se extendió por espacio de cuatro décadas, llegando a convertirse en el decano de la Prensa hispalense y en uno de los diario de mayor tirada de la región andaluza. De carácter independiente, aunque de claras simpatías conservadoras, durante la Segunda República "El Noticiero" pasó a convertirse durante algunos meses en el único diario republicano de Sevillan, órgano del Partido Radical liderado por Diego Martínez Barrio, despareciendo a comienzos de 1933, ante la dura competencia del resto de los diarios locales ("ABC", "El Liberal, "El Correo de Andalucía", "La Unión) y por problemas de carácter financiero.Founded in 1893 by the Valencian reporter Francisco Peris Mencheta, "El Noticero Sevillano" was probably the first major general newspaper edited in the capital of Andalusia representing a new trend in journalism, growing since the end of the 19th Century. Its publication spanned a period of four decades, becoming the most senior newspapers of the hispalense Press and was one of the most highly circultated newspapers of the Andalusian Region. "El Noticiero" was an independant newspaper with conservative tendencies, which became, during the Second Republic for some months, the only Republican newspaper in Seville. "El Noticiero" was an instrument of the radical party led by Diego Martínez Barrio, which eventually disappeared in early 1933 due to the fierce competition of other local publications (ABC", "El Liberal, "El Correo de Andalucía", "La Unión") and due to financial problems

Un diario entre la Restauración y la Segunda República: El Noticiero Sevillano (1893-1933)

Fundado en 1893 por el periodista valenciano Francisco Peris Mencheta, El Noticiero Sevillano fue probablemente el primer gran diario de información general editado en la capital de Andalucía conforme a los criterios del nuevo periodismo, en expansión desde finales del siglo XIX. Su publicación se extendió por espacio de cuatro décadas, llegando a convertirse en el decano de la Prensa hispalense y en uno de los diarios de mayor tirada de la región andaluza. De carácter independiente, aunque de claras simpatías conservadoras, durante la Segunda República El Noticiero pasó a convertirse durante algunos meses en el único diario republicano de Sevilla, órgano del Partido Radical liderado por Diego Martínez Barrio, desapareciendo a comienzos de 1933 ante la dura competencia del resto de los diarios locales (ABC, El Liberal, El Correo de Andalucía, La Unión) y por problemas de carácter financiero.Founded in 1893 by the Valencian reporter Francisco Peris Mencheta, El Noticiero Sevillano was probably the first major general newspaper edited in the capital of Andalusia representing a new trend in journalism, growing since the end of the 19th Century. Its publication spanned a period of four decades, becoming the most senior newpapers of the hispalense Press and was one of the most highly circulated newspapers of the Andalusian region. El Noticiero was an independent newspaper with conservative tendencies, which became, during the Second Republic for some months, the only Republican newspaper in Seville. El Noticiero was an instrument of the radical party led by Diego Martínez Barrio, which eventually disappeared in early1933 due to the fierce competition of other local publications (ABC, El Liberal, El Correo de Andalucía, La Unión) and due to financial problems

First report of caprine abortions due to Chlamydia abortus in Argentina.

Infectious abortions of goats in Argentina are mainly associated with brucellosis and toxoplasmosis. In this paper, we describe an abortion outbreak in goats caused by Chlamydia abortus. Seventy out of 400 goats aborted. Placental smears stained with modified Ziehl-Neelsen stain showed many chlamydia-like bodies within trophoblasts. One stillborn fetus was necropsied and the placenta was examined. No gross lesions were seen in the fetus, but the inter-cotyledonary areas of the placenta were thickened and covered by fibrino-suppurative exudate. The most consistent microscopic finding was found in the placenta and consisted of fibrinoid necrotic vasculitis, with mixed inflammatory infiltration in the tunica media. Immunohistochemistry of the placenta was positive for Chlamydia spp. The results of polymerase chain reaction targeting 23S rRNA gene performed on placenta were positive for Chlamydia spp. An analysis of 417 amplified nucleotide sequences revealed 99% identity to those of C. abortus pm225 (GenBank AJ005617) and pm112 (GenBank AJ005613) isolates. To the best of our knowledge, this is the first report of abortion associated with C. abortus in Argentina

Analysis of the contextual behavior of the user and its relation with the consumption of mobile applications

The mobile applications market is growing rapidly, capturing the attention on the analysis of the consumption of applications to improve their recommendation and the satisfaction of the user. The analysis is based on the search for information that allow explaining the occurrence of events of the life cycle of the applications. In this sense, several studies show a strong relation between such events and information about the current contextual situation of the users and their application consumption record. Nevertheless, the mentioned studies do not take into account the relation existing between the contextual dimensions status record (knownas CUBe), and the occurrence of application life cycle events, but it was taken into account for this research work. Therefore, a statistical analysis about an actual dataset is presented, evidencing a strong relation between the CUBe and the launch of a set of applications. Finally, a scenario where these relations can be used for enriching recommendation systems for mobile applications is described.El mercado de aplicaciones móviles crece aceleradamente, captando la atención sobre el análisis del consumo de las mismas para mejorar su recomendación y la satisfacción del usuario, soportado en la búsqueda de información que permita explicar la ocurrencia de eventos del ciclo de vida de las aplicaciones. En este sentido algunos estudios muestran una fuerte relación entre dichos eventos e información sobre la situación contextual actual del usuario y su registro de consumo de aplicaciones. Sin embargo, dichos trabajos no consideran la relación existente entre el registro de estados de las dimensiones contextuales (denominado como CUBe) y la ocurrencia de eventos del ciclo de vida de las aplicaciones,tal como lo hace este estudio. En este sentido, se presenta un análisis estadístico sobre un dataset real, evidenciando una fuerte relación entre el CUBe y el lanzamiento de un conjunto de aplicaciones. Finalmente, se describe un escenario donde estas relaciones pueden ser utilizadas para enriquecer sistemas de recomendación para aplicaciones móviles

Importância das Células Tronco Mesenquimais no desenvolvimento do câncer de mama

La mayoría de las pacientes con cáncer de mama (PCM) avanzado desarrollan metástasis óseas, de tipo osteolíticas, como resultado de un desbalance entre los procesos de os-teogénesis, osteoclastogénesis y resorción ósea. Nosotros encontramos en la médula ósea (MO) de las PCM avanzado (carcinoma mamario ductal infiltrante, estadío clínico III y IV, sin metástasis en MO y hueso) una disminución de la eficiencia de clonado de las células madre mesenquimales (MSC), medida como el número de unidades formadoras de colonias fibroblásticas (CFU-F), así como una disminución en su capacidad de diferenciación osteogénica en comparación con las voluntarias sanas (VS). Además, observamos osteoclastogénesis espontánea en MO y sangre periférica de las PCM, mientras que no lo hicimos en las VS. Por último, consideramos importante la evaluación de la diferenciación osteogénica de las MSC de MO y del potencial osteoclasto-génico de los progenitores hematopoyéticos de MO y de los monocitos de sangre periférica, como posibles factores pronósticos de futuros desórdenes óseos que pueden favorecer la invasión de las células del CM en el hueso.Most advanced breast cancer patients (BCP) develop oste-olytic bone metastasis as a result of the imbalance between osteogenesis, osteoclastogenesis and bone resorption processes.In bone marrow (BM) aspirates of untreated BCP (infiltrative ductal breast carcinoma, clinical stage III and IV, without bone and BM metastasis), a decrease in cloning efficiency of BM-mesenchymal stem cells (MSC), measured as number of colony forming unit-fibroblasts (CFU-F), and a decrease in its osteogenic differentiation capacity compared to healthy volunteers (HV) were found . Moreover, spontaneous osteoclastogenesis (SpOC) in BM and peripheral blood of BCP were observed, while SpOC was not observed in BM of HV. Finally, evaluation of the osteogenic differentiation of BM-MSC and osteoclastogenic potential of BM-hematopoi-etic progenitors as well as peripheral blood-monocytes are considered important as possible prognostic factors for future bone disorders that may favor the invasion of BC cells into bone.A maior parte das pacientes com câncer de mama (PCM) avançado desenvolve metástases ósseas, de tipo osteolíticas, como resultado de um desequilíbrio entre os processos de os-teogênese, osteoclastogênese e ressorção óssea. Nós encontramos na medula óssea (MO) das PCM avançado (carcinoma mamário ductal infiltrante, estágío clínico III e IV, sem metástase em MO e osso) uma diminuição da eficiên-cia de clonagem das células tronco mesenquimais (MSC), medida como o número de unidades formadoras de colônias fibroblásticas (CFU-F), bem como uma diminuição em sua capacidade de diferenciação osteogênica em comparação com as voluntárias saudáveis (VS). Além disso, observamos osteoclastogênese espontânea em MO e sangue periférica das PCM, enquanto que não o fizemos nas VS. Por último, consideramos importante a avaliação da diferenciação os-teogênica das MSC de MO e do potencial osteoclastogênico dos progenitores hematopoiéticos de MO e dos monócitos de sangue periférico, como possíveis fatores prognósticos de futuras desordens ósseas que possam favorecer a invasão das células do CM no osso.Fil: Fernández Vallone, Valeria Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); ArgentinaFil: Labovsky, Vivian. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); ArgentinaFil: Martinez, Leandro Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); ArgentinaFil: Chasseing, Norma Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentin

Fine-Scale Habitat Segregation between Two Ecologically Similar Top Predators

Similar, coexisting species often segregate along the spatial ecological axis. Here, we examine if two top predators (jaguars and pumas) present different fine-scale habitat use in areas of coexistence, and discuss if the observed pattern can be explained by the risk of interference competition between them. Interference competition theory predicts that pumas should avoid habitats or areas used by jaguars (the dominant species), and as a consequence should present more variability of niche parameters across study areas. We used non-invasive genetic sampling of faeces in 12 different areas and sensor satellite finescale habitat indices to answer these questions. Meta-analysis confirmed differences in fine-scale habitat use between jaguars and pumas. Furthermore, average marginality of the realized niches of pumas was more variable than those of jaguars, and tolerance (a measure of niche breadth) was on average 2.2 times higher in pumas than in jaguars, as expected under the interference competition risk hypothesis. The use of sensor satellite fine-scale habitat indices allowed the detection of subtle differences in the environmental characteristics of the habitats used by these two similar top predators, which, as a rule, until now were recorded using the same general habitat types. The detection of fine spatial segregation between these two top predators was scale-dependent.Peer reviewe