Search results for "ètica"
showing 10 items of 343 documents
Transcriptional Response of Saccharomyces cerevisiae to Different Nitrogen Concentrations during Alcoholic Fermentation▿ †
2007
Gene expression profiles of a wine strain of Saccharomyces cerevisiae PYCC4072 were monitored during alcoholic fermentations with three different nitrogen supplies: (i) control fermentation (with enough nitrogen to complete sugar fermentation), (ii) nitrogen-limiting fermentation, and (iii) the addition of nitrogen to the nitrogen-limiting fermentation (refed fermentation). Approximately 70% of the yeast transcriptome was altered in at least one of the fermentation stages studied, revealing the continuous adjustment of yeast cells to stressful conditions. Nitrogen concentration had a decisive effect on gene expression during fermentation. The largest changes in transcription profiles were o…
Ètica i ciència en la normativa lingüística
2014
L’article tracta un tema poc debatut: quines condicions ètiques, socials i científiques deuen satisfer les gramàtiques de les acadèmies. Les normes deuen estar fonamentades en estudis i en argumentacions, mai en el dogma i en l’autoritarisme. Amb mitjans objectius, les gramàtiques han de potenciar l’autoestima i la confiança dels parlants (§2). Com que els seus destinataris són els parlants en general, han de definir els conceptes que usen i han de buscar una redacció coherent i comprensible (§4). Eixes característiques contribuïxen a desplegar una formació crítica, que complementa l’autoestima. En el cas valencià, també hi ha l’objectiu d’augmentar la cohesió de la societat valenciana i su…
Els parlars del Montsià. Estudi geolingüístic
2019
TESI DOCTORAL ELS PARLARS DEL MONTSIÀ. ESTUDI GEOLINGÜÍSTIC L'estudi presenta la descripció dialectal de la llengua catalana, a partir del registre col·loquial, a la comarca del Montsià, situada al bell mig de la llengua, entre el Baix Ebre al nord, el Baix Maestrat al sud i el Matarranya a l'oest. Les dades s'han recollit en dènou punts d'enquesta, aquests són els que estan habitats regularment amb població autòctona. Els informants presenten el perfil adequat per a aquest tipus d'investigació. El qüestionari s'ha basat en 3.491 ítems. El treball inclou les parts habituals de descripció lingüística: fonètica (vocalisme tònic i àton, consonantisme), morfologia nominal i verbal, morfosintaxi…
Periodontal health and esthetic results in impacted teeth exposed by apically positioned flap technique.
2010
Objectives: This study evaluates the periodontal health status and the esthetic results of teeth subjected to orthodontic traction, after their exposure by an apically positioned flap. Study design: Fifteen patients were included in the study, ages between 11 and 28 years old. The fenestrated teeth and their homologous contralateral normally erupted teeth, used as control, were evaluated. Results: Statistically significant differences were found in the position of the gingival margin (p = 0.005), with an average distance between cemento-enamel junction (CEJ) and gingival margin of 2.47 mm (SD 1.19) in control teeth and of 1 mm (SD 1.31) in the operated teeth, and in the depth of palatal pro…
A Novel Loss-of-Function Mutation (N48K) in the PTEN Gene in a Spanish Patient with Cowden Disease
2003
Cowden disease, also known as multiple hamartoma syndrome, is a rare disease inherited in an autosomal dominant pattern, which confers a high risk of developing breast and thyroid carcinomas. Mutations in PTEN, a tumor suppressor gene located on chromosome 10q23, have been identified in patients with Cowden disease. In this work, the direct sequencing of all coding regions of the PTEN gene led us to the identification of N48K, a new germline PTEN missense mutation, in a patient suffering from Cowden disease. The genetic analysis of 200 chromosomes from healthy individuals revealed that the variant was not common in our population. Moreover, by functional analysis we found that the ability o…
Intercomparison of spanish advanced lidars in the framework of EARLINET
2007
To extend and reinforce the action of the EARLINET- ASOS project, a nucleus of Spanish advanced lidars was created. Four systems were intercompared satisfactorily in terms of backscatter coefficients at two elastic wavelengths. Peer Reviewed
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/…
A Refractive Index Sensor Based on the Resonant Coupling to Cladding Modes in a Fiber Loop
2013
We report an easy-to-build, compact, and low-cost optical fiber refractive index sensor. It consists of a single fiber loop whose transmission spectra exhibit a series of notches produced by the resonant coupling between the fundamental mode and the cladding modes in a uniformly bent fiber. The wavelength of the notches, distributed in a wavelength span from 1,400 to 1,700 nm, can be tuned by adjusting the diameter of the fiber loop and are sensitive to refractive index changes of the external medium. Sensitivities of 170 and 800 nm per refractive index unit for water solutions and for the refractive index interval 1.40-1.442, respectively, are demonstrated. We estimate a long range resolut…
La evolución en los tribunales: aplicaciones forenses de las filogenias moleculares
2013
En las dos últimas décadas se ha generalizado el uso de pruebas genéticas en los tribunales, permitiendo la identificación de criminales a partir de restos biológicos, la determinación de paternidades o la identificación de cadáveres. Menos conocidas son las periciales basadas en el uso de filogenias moleculares. En ellas se estudia la ancestralidad común de organismos, normalmente virus o bacterias, para establecer su asociación a una fuente de infección. Desde el caso del dentista de Florida, que infectó con el VIH a varios de sus pacientes, hasta el más próximo del anestesista Juan Maeso, que transmitió el VHC a cerca de 300 pacientes, la teoría evolutiva tiene un papel esencial en estas…
Light induced electron spin resonance in a-Ge:H
1999
We report the observation of light-induced electron spin resonance (LESR) in amorphous hydrogenated germanium. Two new lines with zero crossings near g=2.01 and g=2.03 were detected and ascribed to electrons and holes in the conduction- and valence-band-tail states, respectively. The ratio between the LESR spin densities of both lines is approximately one, suggesting the absence of spin pairing, charge defect creation, or LESR of dangling bonds. The growth and decay spectra exhibit dispersive behavior with a dispersion parameter ∼0.5. The decay spectrum is best fit assuming bimolecular recombination. The LESR spin density depends weakly on the photogeneration rate as a sublinear power law.