Search results for "R1"
showing 10 items of 1016 documents
Age-Related Changes in the Gut Microbiota Modify Brain Lipid Composition
2020
PMCID: PMC6970973; International audience; Understanding the molecular mechanisms underlying the changes observed during aging is a prerequisite to design strategies to prevent age-related diseases. Aging is associated with metabolic changes, including alteration in the brain lipid metabolism. These alterations may contribute to the development of pathophysiological conditions. Modifications in the gut microbiota composition are also observed during aging. As communication axes exist between the gut microbiota and the brain and knowing that microbiota influences the host metabolism, we speculated on whether age-associated modifications in the gut microbiota could be involved in the lipid ch…
Las deducciones autonómicas en el IRPF: análisis y alternativas
2009
RESUMEN En este trabajo llevamos a cabo un ejercicio de microsimulación para analizar la política autonómica en el IRPF, utilizando la Muestra IRPF 2002 IEF-AEAT. Hasta el momento las Comunidades Autónomas han utilizado las deducciones como instrumento principal para modificar el IRPF. Sin embargo parece que las deducciones autonómicas llevan aparejados elevados costes de diseño, legislativos y administrativos; mientras que sus beneficios afectan poco a pocos contribuyentes. Nuestra hipótesis es que se puede alcanzar un resultado similar con unos costes menores. Para ello hemos considerado dos alternativas, sin duda más sencillas: una ligera reducción de los tipos impositivos de las tarifas…
A Spatial Multilevel Analysis of Italian SMEs Productivity
2009
Abstract In this paper, we adapt multilevel analysis methods to investigate the spatial variability of SMEs' productivity across the Italian territory, and account for differences in the socio-economic context. Our results suggest that to properly capture the variability of the data, it is important to allow for both spatial mean and slope effects. Social decay has the expected negative impact. However, while this effect is larger on firms with smaller capital intensity, firms with higher capital intensity seem to be less affected by geography. Greater territorial heterogeneity emerges among those firms with lower capital to labour ratios. Une analyse spatiale a plusieurs niveaux de la prod…
Viajes a Francia para el estudio de la química, 1770-1833
2001
[ES] Los viajes científicos a Francia durante último tercio del siglo XVIII y el primero del siglo XIX son generalmente considerados, por diversas razones, como una importante cuestión en el desarrollo de la ciencia española de ese período. Los viajes científicos de los pensionados y comisionados de la Ilustración suelen estudiarse como un vehículo de transmisión de nuevas ideas científicas. Por el contrario, el exilio de autores afrancesados y liberales suele valorarse negativamente, como una de las causas de la decadencia de la ciencia española del primer tercio del siglo XIX. En este trabajo se pretende ofrecer un marco general para el estudio de estos viajes y presentar algunas de las p…
The Intersection of $3$-Maximal Submonids
2020
Very little is known about the structure of the intersection of two $k$-generated monoids of words, even for $k=3$. Here we investigate the case of $k$-maximal monoids, that is, monoids whose basis of cardinality $k$ cannot be non-trivially decomposed into at most $k$ words. We characterize the intersection in the case of two $3$-maximal monoids.
Identification and Quantification of Enniatins and Beauvericin in Animal Feeds and Their Ingredients by LC-QTRAP/MS/MS
2019
Emerging fusariotoxins, mainly enniatins (ENNs) and beauvericin (BEA), are secondary toxic metabolites produced by Fusarium spp. and are widely distributed contaminants of cereals and by-products. Mycotoxin contamination in these products supposes an important risk to feed supply security in the feed industry due to the common use of cereals in feed formulations. Hence, continuous monitoring of both raw materials and feed mixtures is highly recommended as stated by sanitary authorities. Therefore, an analytical procedure based on liquid chromatography tandem mass spectrometry and an acetonitrile-based extraction followed by a d-SPE (QuEChERS) step for the simultaneous determination of emerg…
"Table 2" of "C-12 (gamma,p) B-11 cross-section from 80 to 157 MeV"
1995
EX = 7 (FROM 6.5 TO 8.0 MEV). ANGULAR BINS OF 5 DEG WIDTH.
"Table 3" of "C-12 (gamma,p) B-11 cross-section from 80 to 157 MeV"
1995
EX = 13 (FROM 12.0 TO 13.5 MEV). ANGULAR BINS OF 5 DEG WIDTH.
"Table 1" of "C-12 (gamma,p) B-11 cross-section from 80 to 157 MeV"
1995
EX IN 0 MEV REGION (FROM 0 TO 1.5 MEV). ANGULAR BINS OF 5 DEG WIDTH.
Hullun hauska maailma. Näkökulmia hulluutta ja poikkeavuuksia käsittelevään huumoriin opiskelijoiden digitaalisessa folkloressa
2020
Artikkelissa tarkastellaan Suomalaisen Kirjallisuuden Seuran tutkija Ulla Lipposen (1941–2015) tallettaman digitaalisen folkloreaineiston kuvaa 2000- luvun hulluudesta osana kansanhuumoria. Artikkelissa pohditaan, millaista kuvaa yhteiskunnasta ja hulluna pidetyn ilmentymistä nuorten aikuisten tallettamat esimerkit rakentavat. Mille niissä nauretaan tai millaiseen kulttuuriseen keskusteluun ne ottavat osaa huumorin keinoin? Artikkeli nostaa esille kaksi erilaista tulokulmaa hulluuteen: lääketieteelliseen diagnosointiin liittyvät näkökulmat sekä kulttuuriseen, pääosin normeja rikkovan käytöksen tuottamaan hulluuteen. Artikkeli osoittaa, että huumorin keinoin on mahdollista käsitellä arkoja y…