Search results for " colon"
showing 10 items of 718 documents
La comercialización de los tejidos de seda valencianos con América y sus dinámicas: una aproximación a través de la correspondencia de la Compañía de…
2022
Ribes Sáez, Francisco: La comercialización de los tejidos de seda valencianos con América y sus dinámicas: una aproximación a través de la correspondencia de la Compañía de Nuestra Señora de los Desamparados (1775-1786). . En: Estudis: Revista de historia moderna, 48 2022: 277-298
Nuevos estándares de calidad de linfadenectomía D3 en la escisión completa del mesocolon tras la hemicolectomía derecha
2022
Introducción y objetivo. Los estándares de calidad anatomopatológica de escisión total del mesorrecto y escisión completa de mesocolon se basan en parámetros anatomoquirúrgicos constantes y están claramente definidos. Mediante estos estándares se ha podido relacionar la calidad de la pieza quirúrgica con el aumento de la supervivencia. La técnica quirúrgica de Linfadenectomia D3 (LD3) en la hemicolectomía derecha se basa en la disección e incorporación a la pieza quirúrgica del tejido linfograso del tronco gastrocólico de Henle y del tronco quirúrgico de Gillot. Numerosos estudios destacan la necesidad de establecer estándares de calidad anatomopatológicos de LD3 hasta el momento no descrit…
Influence of plant traits, soil microbial properties, and abiotic parameters on nitrogen turnover of grassland ecosystems
2016
International audience; Although it is known that multiple interactions among plant functional traits, microbial properties , and abiotic soil parameters influence the nutrient turnover, the relative contribution of each of these groups of variables is poorly understood. We manipulated grassland plant functional composition and soil nitrogen (N) availability in a multisite mesocosm experiment to quantify their relative effects on soil N turnover. Overall, root traits, arbuscular mycorrhizal colonization, denitrification potential, as well as N availability and water availability, best explained the variation in measured ecosystem properties, especially the trade-off between nutrient sequest…
Dinamiche della colonizzazione da pneumococco in Sicilia tra il 2009 ed il 2017: implicazioni nella vaccinazione anti-pneumococcica in soggetti di tu…
2019
Introduzione Streptococcus pneumoniae è uno dei maggiori responsabili di meningiti, sepsi e polmoniti a livello globale. La colonizzazione asintomatica da pneumococco (carriage) rappresenta il reservoir di sierotipi batterici ed è considerata un pre-requisito per lo sviluppo della malattia. In questo lavoro viene descritto l’andamento del carriage da pneumococco e la distribuzione dei sierotipi circolanti in Sicilia, una delle regioni italiane a proporre nei nuovi nati, già dal 2004, la vaccinazione universale con il vaccino anti pneumococcico coniugato e dal 2013 anche nei soggetti a rischio di qualsiasi età e negli adulti over-65. Materiali e metodi Soggetti di tutte le età, giunti all’os…
Artico nero. La lunga notte dei popoli dei ghiacci
2016
Sette storie da un Artico nero e morente, ambientate in Canada, nella Norvegia settentrionale, in Siberia, in Groenlandia: luoghi dove la distruzione di una cultura sta anticipando gli scenari peggiori. Un’analisi politica e sociale incassata nel modello romanzo-saggio. Un modo nuovo di raccontare e fare antropologia: antropofiction.
Temperature differences associated with colour do not determine where the acorn ant Temnothorax crassispinus (Hymenoptera: Formicidae) chooses to nest
2021
Temperature is an important factor for invertebrates. Social insects build nests, which along with their ability to thermoregulate, provide shelter from extreme temperatures. However, for many species of ants the most common method of controlling the temperature inside a nest is to choose a suitable nest site. During a fi eld experiment, the choice of nest site by the acorn ant Temnothorax crassispinus, a species which lives in coniferous and mixed forests, was studied. It typically occupies ephemeral nest sites and can move to a new nest site several times in one season. It was predicted that in early spring, dark coloured nest sites would be warmer and thus more frequently occupied by ant…
The loss of dispersal on islands hypothesis revisited: Implementing phylogeography to investigate evolution of dispersal traits in Periploca (Apocyna…
2017
Aim: The loss of dispersal on islands hypothesis (LDIH) posits that wind-dispersed plants should exhibit reduced dispersal potential, particularly if island populations are old. In this study, we tested this hypothesis using a detailed phylogeographical framework across different geographical scales. Location: Mainland and island areas of the Atlantic and Mediterranean regions, including Macaronesia (Canary Islands and Cape Verde) and Mediterranean islands in the strait of Sicily. Methods: Forty-five populations of Periploca laevigata, a wind-dispersed shrub, were sampled. Plastid and nuclear microsatellite data were used to reconstruct spatio-temporal patterns of island colonization, and e…
Génesis y resolución de conflictos relacionados con la instalación de mezquitas y oratorios: el caso del oratorio de Singuerlín (Santa Coloma de Gram…
2017
Durante los últimos años, se han sucedido, en diferentes territorios del Estado español, los conflictos relacionados con la instalación de mezquitas y oratorios destinados a la práctica del culto musulmán. Este artículo analiza uno de los conflictos más intensos, el desatado en 2004 ante el intento de apertura del oratorio del barrio de Singuerlín en Santa Coloma de Gramenet. Se estudia su raíz, su evolución y el papel que jugó la mediación intercultural en su gestión. A partir de las entrevistas en profundidad efectuadas con los actores implicados, varios años después, se analizan los elementos estructurales del conflicto y se plantea una reflexión acerca de la forma en la que se ha ido co…
Enhancement by TNF-alpha of reactivation and replication of latent herpes simplex virus from trigeminal ganglia of mice.
1995
The influence of tumor-necrosis-factor-alpha (TNF-alpha), granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukine-1 (IL-1) and IL-3 on the in vitro reactivation frequency and replication rate of trigeminal ganglia of mice latently infected with herpes simplex virus (HSV) strain KOS was studied. It could be demonstrated that TNF-alpha and possibility GM-CSF, but not IL-1 and IL-3, enhanced the reactivation frequency and replication of HSV. Interferon alpha/beta (IFN alpha/beta) prevented reactivation and replication.
Feature selection with Ant Colony Optimization and its applications for pattern recognition in space imagery
2016
This paper presents a feature selection (FS) algorithm using Ant Colony Optimization (ACO). It is inspired by the particular behavior of real ants, namely by the fact that they are capable of finding the shortest path between a food source and the nest. There are considered two ACO-FS model applications for pattern recognition in remote sensing imagery: ACO Band Selection (ACO-BS) and ACO Training Label Purification (ACO-TLP). The ACO-BS reduces dimensionality of an input multispectral image data by selecting the “best” subset of bands to accomplish the classification task. The ACO-TLP selects the most informative training samples from a given set of labeled vectors in order to optimize the…