Search results for "PC"
showing 10 items of 2805 documents
Preliminary identification of self-incompatibility genotypes of Sicilian almond landraces
2018
Sicily is the main almond producer in Italy. The almond tree is one of the main protagonists of the Sicilian agrarian landscape, especially in the winter, when the bare branches are covered by white or pinkish flowers. Its presence is particularly significant in the province of Agrigento, in Syracuse and in Ragusa areas, where the almond nut is used for fresh consumption and for the preparation of typical sweets. The extremely rich Sicilian almond germplasm can be useful for genetic improvement, since many local landraces possess aromatic characteristics of the nuts of high value. Self-incompatibility in this species is gametophytic and controlled by a multi-allelic S locus, coding for the …
Use of standard and setup of non conventional techniques for the elimination of viruses associated with Fig Mosaic Disease (FMD) in fig germplasm (Fi…
2017
Abstract Ficus carica L. is considered one of the oldest fruit trees in the Mediterranean basin and is widely grown and harvested for the consumption of its fruits dry and fresh. This species is affected by different virus diseases, especially by Fig mosaic disease (FMD), for which Fig leaf mottle-associated virus 1 (FLMaV-1), Fig leaf mottle-associated virus 2 (FLMaV-2), Fig mild mottling-associated virus (FMMaV), Fig mosaic virus (FMV), Fig latent virus 1 (FLV-1), Fig badnavirus 1 (FBV-1) and Fig fleck-associated virus (FFkaV) are associated. FMD is the most widespread disorder of this species, which represents a threat and a constraint for healthy fig production and germplasm exchange. T…
The commercial activity of tourism companies. Perception of tourism students
2019
El presente trabajo pretende analizar la opinión que los estudiantes universitarios de Turismo tienen respecto a desarrollar su futuro laboral en el área comercial de empresas turísticas, la que más oferta de puestos de trabajo genera en España. En concreto, se pretende conocer cuál es su percepción sobre este tipo de trabajo, tanto desde un punto de vista personal como profesional. Para alcanzar estos objetivos, se ha encuestado a 348 estudiantes de diferentes cursos, de grado y posgrado, que han sido clasificados en función de su interés por trabajar como vendedores en el sector turístico. Los resultados muestran que, en general, la valoración de una futura actividad de tipo comercial es …
Gianni Rodari and Tamara Lisitsian: Western Communist Parties as Vehicles of Cultural Encounter
2013
Abstract. The case of Gianni Rodari, an Italian communist children's writer whose books were received by the Soviet public with exceptional favour, proves how relations with western communist parties happened to be instrumental in opening up the Soviet cultural system to the world. Rodari became, in fact, well-known in the Soviet Union before attaining fame in his homeland; from the Sixties on, however, things became to change, and from this point on, it may be argued, children from different sides of the iron curtain were brought up reading the same books. Rodari's works were the expression of the point of view of a western communist – in many cases, more western than communist – and they …
A new actor involved in hypothalamic glucose detection : the Transient Receptor Potential Canonical (TRPC) channels
2015
Hyperglycemia is detected and integrated by the mediobasal hypothalamus (MBH) which, in turn, inhibits food intake and triggers insulin secretion. The MBH houses specialized glucose-sensitive (GS) neurons, which directly or indirectly modulate their electrical activity in response to changes in glucose level. In a first study, we hypothesized that indirect detection of glucose by MBH GS neurons involves the secretion of endozepine by astrocytes, a gliotransmitter known to inhibit food intake in response to hyperglycemia. The present work shows that endozepines selectively activate anorexigenic MBH pro-opiomelanotortine (POMC) neurons. In the second study, we show that the direct detection o…
Human taste receptors : study of structure-function relationships
2019
Sweet, umami and bitter taste detectors are membrane receptors that belong to the family of G-protein coupled receptors (GPCRs). They are characterized by the existence of a hydrophobic transmembrane domain (TMD) and an activation mechanism that involves a heterotrimeric G protein.Human has 25 bitter taste receptors TAS2R. These receptors belong to class A GPCRs. Their architecture consists of a TMD structured in 7 -helix which form the orthosteric binding site of bitter molecules. The umami taste receptor is a heterodimer composed of the TAS1R1 and TAS1R3 subunits, while the TAS1R2 and TAS1R3 subunits form the sweet taste receptor. Each subunits belongs to the class C GPCRs and shares a c…
A higher incidence of moult–breeding overlap in great tits across time is linked to an increased frequency of second clutches: a possible effect of g…
2021
The rise of temperatures due to global warming is related to a lengthening of the breeding season in many bird species. This allows more pairs to attempt two clutches within the breeding season, thus finishing their breeding activity later in the season and therefore potentially overlapping these with post–breeding moult. We tested whether this occurred in two Spanish great tit Parus major populations. The proportion of pairs laying second clutches increased from 1 % to 32 % over the study period in one of the populations (Sagunto, 1995–2019), while it did not change in the other (Quintos, 2006–2019; mean 5 %). We did not find any temporal trend for moult start date of late–breeding birds i…
Arriani ... Ponti Euxini et maris Erythraei periplus ... : Nunc primum e graeco sermone in latinum versus, plurimisque mendis repurgatus : Accesserun…
1577
2 t. en 1 v. Index Sign.: œ4, œœ4, *4, **4, a-q6, r-v4; œ4, œœ4, Ì4, Ý6, A-K6. - Errates tip. en la pag.; en la 1a seq.: repiteix 96, dew 178 passa a 181, de 190 passa a 188; en la 2a seq.: de 106 passa a 108 Text a 2 col., comentaris a 1 col. - Postil·les. - Reclams al vers de les p. Frios, vinyetes, caplletres ornades
Robust Principal Component Analysis of Data with Missing Values
2015
Principal component analysis is one of the most popular machine learning and data mining techniques. Having its origins in statistics, principal component analysis is used in numerous applications. However, there seems to be not much systematic testing and assessment of principal component analysis for cases with erroneous and incomplete data. The purpose of this article is to propose multiple robust approaches for carrying out principal component analysis and, especially, to estimate the relative importances of the principal components to explain the data variability. Computational experiments are first focused on carefully designed simulated tests where the ground truth is known and can b…