Search results for "ètica"

Prominence and centralization: a two-way contrast between lexical and epenthetic non-labial high vowels in Algherese Catalan

2015

Algherese Catalan has the peculiarity of presenting an inserted [i] vowel across words in order to avoid certain consonant codas. In this study, we compare five acoustic features of this epenthetic segment (i.e., duration, intensity, and the three first formants) with those of lexical /i/ vowels, both stressed and unstressed. The results indicate that the three vowels present differences only with respect to duration, F2 and, to a lesser extent, F3. The second formant values decline progressively from the lexical stressed vowels to the inserted unstressed segments, with lexical unstressed segments at an intermediate point. This gradation mirrors the relative prominence of each vowel. The di…

Heat shock response in yeast involver changes in both transcription rates and mRNA stabilities

2011

We have analyzed the heat stress response in the yeast Saccharomyces cerevisiae by determining mRNA levels and transcription rates for the whole transcriptome after a shift from 25uC to 37uC. Using an established mathematical algorithm, theoretical mRNA decay rates have also been calculated from the experimental data. We have verified the mathematical predictions for selected genes by determining their mRNA decay rates at different times during heat stress response using the regulatable tetO promoter. This study indicates that the yeast response to heat shock is not only due to changes in transcription rates, but also to changes in the mRNA stabilities. mRNA stability is affected in 62% of …

Specific and global regulation of mRNA stability during osmotic stress in Saccharomyces cerevisiae.

2009

Hyperosmotic stress yields reprogramming of gene expression in Saccharomyces cerevisiae cells. Most of this response is orchestrated by Hog1, a stress-activated, mitogen-activated protein kinase (MAPK) homologous to human p38. We investigated, on a genomic scale, the contribution of changes in transcription rates and mRNA stabilities to the modulation of mRNA amounts during the response to osmotic stress in wild-type and hog1 mutant cells. Mild osmotic shock induces a broad mRNA destabilization; however, osmo-mRNAs are up-regulated by increasing both transcription rates and mRNA half-lives. In contrast, mild or severe osmotic stress in hog1 mutants, or severe osmotic stress in wild-type cel…

Exploiting the diversity of tomato: the development of a phenotypically and genetically detailed germplasm collection

2020

[EN] A collection of 163 accessions, including Solanum pimpinellifolium, Solanum lycopersicum var. cerasiforme and Solanum lycopersicum var. lycopersicum, was selected to represent the genetic and morphological variability of tomato at its centers of origin and domestication: Andean regions of Peru and Ecuador and Mesoamerica. The collection is enriched with S. lycopersicum var. cerasiforme from the Amazonian region that has not been analyzed previously nor used extensively. The collection has been morphologically characterized showing diversity for fruit, flower and vegetative traits. Their genomes were sequenced in the Varitome project and are publicly available (solgenomics.net/projects/…

The inner nuclear membrane protein Src1 associates with subtelomeric genes and alters their regulated gene expression

2008

Inner nuclear membrane proteins containing a LEM (LAP2, emerin, and MAN1) domain participate in different processes, including chromatin organization, gene expression, and nuclear envelope biogenesis. In this study, we identify a robust genetic interaction between transcription export (TREX) factors and yeast Src1, an integral inner nuclear membrane protein that is homologous to vertebrate LEM2. DNA macroarray analysis revealed that the expression of the phosphate-regulated genes PHO11, PHO12, and PHO84 is up-regulated in src1Δ cells. Notably, these PHO genes are located in subtelomeric regions of chromatin and exhibit a perinuclear location in vivo. Src1 spans the nuclear membrane twice an…

Delos [sic] remedios cōtra prosp[er]a y aduersa fortuna ...

Nom de l'autor precedeix al tít Existeix un estat que dice en el r. del f. [12], lin. 22: "Gozo / la Esperrnça ..." en lugar de decir, ya corregida la errata: "Gozo / la Esperança ..." Sign.: a-n8 o6, p-v8, u8, x-z8, A8, B-F6 Letra gót Grav. xil. de la Crucifixión a toda plana en a8 v Port. amb esc. xil. de Gonzalo Fernández de Córdoba, a qui es dedica l'obra Combina Cap. xil. amb minus. p. inic Els f. als r. de a4 i b1 amb orla tip

Libri minores & primum Catonis disticha Moralia : cum Antonij Nebrissensis Annotationibus ...

1545

Catonis disticha moralia. De contemptu mundi. Doctrina mensae Ioannis Sulpitii Verulani libri. Aesopi fabulae. Libri Floretus. Libri quinque clauium sapientiae Port. amb orla tip. en p. [1] i en p. [53 Sign.: a10, A8, B6, a-b8, A-C8 Caplletres ornades, vinyetes

Technical memorandum: Mode classification in cylindrical surface waveguides

1987

A new method to analyse the TM-TE field structure of hybrid modes in cylindrical surface waveguides is proposed. This method, as well as others previously suggested, is applied to a dielectric-coated wire with an intervening airgap. Our results reveal that they cannot be classified into quasi-TM and quasi-TE modes. However, a scheme of mode designation is proposed, based more on mathematical properties than on the field structure.

Homogeneity of Interspecific Hybrids Between Saccharomyces cerevisiae and Saccharomyces uvarum by Phenotypic and Transcriptional Analysis

2005

Oenological traits, such as temperature profile and production of certain metabolites, were tested for four interspecifc hybrids obtained by"spore to spore" crossing between Saccharomyces cerevisiae and Saccharomyces uvarum strains and uniformity of their inheritance was found. PCR/RFLP analysis of ITS regions was carried out to confirm the hybrid nature of the strains. They showed an additive profile with five bands of the respective 325, 230, 170 and 125 bp. Finally gene expression study was performed by comparative DNA macroarray analysis of the hybrids and the preliminary results showed that the global gene expression patterns of hybrids are remarkably similar to one another. In conclus…

Evolución del virus de la hepatitis C en muestras hospitalarias de la Comunidad Valenciana

2004

Aproximadamente 170 millones de personas en el mundo se encuentran infectadas por el virus de la hepatitis C (VHC). La gran heterogeneidad del mismo, permite distinguir hasta 6 genotipos y más de 50 subtipos, los cuales presentan diferencias en cuanto a su prevalencia, distribución geográfica y rutas de transmisión. Sin ir más lejos, en la Comunidad Valenciana, el VHC está presente en casi el 3% de la población. Los genotipos mayoritarios presentes, corresponden al 1b y 1a, siendo el 1b mucho más prevalente que el segundo. Así pues se plantea el principal objetivo de esta tesis: ¿Qué hace al genotipo 1b ser más prevalente en la Comunidad Valenciana que el 1a? Dos regiones del genoma del vir…