Search results for "CA [MG]"
showing 10 items of 2161 documents
Función del gen PIR32 en la construcción y biogénesis de la pared celular de Candida albicans
2013
Candida albicans es un hongo que forma parte de la microbiota comensal de los tractos urogenital y gastrointestinal de muchos individuos, no obstante es la especie que se encuentra con mayor frecuencia como patógeno humano y por ello es la más estudiada y utilizada como modelo de investigación con respecto a otras especies; además, la incidencia de infecciones producidas por Candida se ha incrementado en los últimos años observándose paralelamente un aumento significativo de la morbilidad y la mortalidad como consecuencia de estas infecciones. La pared celular es la característica diferencial más importante entre las células eucariotas humanas y fúngicas, lo cual la convierte en diana ideal…
Grammatica latina e innovazione nella linguistica missionaria: il contributo di Ludovico Bertonio (1557-1625)
2022
L’analisi delle prime grammatiche delle lingue native, scritte dai missionari allo scopo di standardizzare le innumerevoli varietà linguistiche con cui gli europei vennero a contatto durante il periodo della colonizzazione spagnola e portoghese in sud America, consente di gettare una nuova luce sull’evoluzione del pensiero linguistico all’inizio dell’era moderna. Questo lavoro si concentra in particolare sulla prima grammatica dell’aymara, l’Arte y Grammatica muy copiosa de la lengua aymara, scritta in lingua castigliana alla fine del Cinquecento (1596) dal missionario gesuita italiano Ludovico Bertonio e pubblicata a Roma nel 1603.
El Sendebar a la luz de las versiones orientales errores de transmisión que dejan huella
2020
El largo periplo del Sindibâd desde sus orígenes en India o Persia hasta llegar a la Península Ibérica, pasando por versiones en pahlevi y árabe, ha dado como resultado que el Sendebar castellano esté plagado de contradicciones y sinsentidos. La difícil adecuación de la obra al mundo occidental, con valores culturales y religiosos muy distintos, está detrás de muchas de estas anomalías, aunque muchas otras son achacables a los defectos del testimonio, tardío y deturpado, en el que se conserva. Por lo general la crítica se ha ocupado de los relatos más problemáticos de la colección, pasando por alto aquellos en los que un solo párrafo, o incluso un solo término equivocado, dan al traste con …
Genome-wide mapping of signatures of selection using a high-density array identified candidate genes for growth traits and local adaptation in chicke…
2023
Abstract Background Availability of single nucleotide polymorphism (SNP) genotyping arrays and progress in statistical analyses have allowed the identification of genomic regions and genes under selection in chicken. In this study, SNP data from the 600 K Affymetrix chicken array were used to detect signatures of selection in 23 local Italian chicken populations. The populations were categorized into four groups for comparative analysis based on live weight (heavy vs light) and geographical area (Northern vs Southern Italy). Putative signatures of selection were investigated by combining three extended haplotype homozygosity (EHH) statistical approaches to quantify excess of haplotype homoz…
Genomic inbreeding estimation in small populations: evaluation of runs of homozygosity in local cattle breeds
2015
The availability of high throughput genotyping has facilitated the quantification of inbreeding by genomic markers in farm animals. Run of homozygosity (ROH) are contiguous lengths of homozygous genotypes and represent an estimate of the degree of autozygosity at genome-wide level. The current study aims to quantify the genomic inbreeding derived from ROH (FROH) in three Italian local cattle breeds. Individuals of Cinisara (71), Modicana (72), Reggiana (168) were genotyped with the 50K v2 Illumina BeadChip. Genotypes from 96 animals of the Italian Holstein cattle breed were included in the analysis. The following criteria were used to define a ROH: two missing SNPs; one heterozygous SNP; mi…
Cytogenetical test to predict the vigour potential in Brassica seeds under long-term storage.
2013
Preservation of intraspecific diversity in seed banks is a common strategy to frontier the loss of biodi- versity, however long-term storage inevitably results in the loss of a certain percentage of seeds, there- fore causing the genetic erosion of a seed collection. For this reason seed quality monitoring is of out- standing importance to ensure that the regenerated genetic material is representative of the endemic nat- ural diversity once reintroduced in the environment, as well as to preserve the genetic biodiversity of species economically relevant for modern agriculture. Ageing amplification tests, in which seeds under- go osmotic stresses, enable to detect little differences in the vi…
Nonstandard variational calculus with applications to classical mechanics. 2. The inverse problem and more
1999
In this paper we continue analyzing the possible applications of nonstandard analysis to variational problems, with particular interest in classical mechanics. In particular, we adapt various techniques of numerical analysis to solve the nonstandard version of the Euler-Lagrange equation for both one-and multidimensional systems. We also start an introductory analysis of the inverse problem of the calculus of variation, identifying a class of nonstandard difference equations for which a first-order Lagrangian can be obtained.
Studi di dinamica molecolare su Mdm2 legata a due differenti inibitori
2009
An operatorial approach to stock markets
2009
We propose and discuss some toy models of stock markets using the same operatorial approach adopted in quantum mechanics. Our models are suggested by the discrete nature of the number of shares and of the cash which are exchanged in a real market, and by the existence of conserved quantities, like the total number of shares or some linear combination of cash and shares. The same framework as the one used in the description of a gas of interacting bosons is adopted.
Data from: Mechanisms of reciprocity and diversity in social networks: a modelling and comparative approach
2018
Three mechanisms have been proposed to underlie reciprocation of social behaviors in gregarious animals: ‘calculated reciprocity’, ‘emotional bookkeeping’ and ‘symmetry-based reciprocity’. Among these explanations, emotional book-keeping has received the broadest support from experimental and observational studies. On the other hand, three individual-based models have shown that reciprocation may emerge via ‘symmetry-based reciprocity’, ‘emotional bookkeeping’, or a combination of both mechanisms. Here we use these three models to assess their relative fit with empirical data on reciprocation and social network structure across different groups and species of macaques. We collected grooming…