411 research outputs found
Nonassociative real H*-algebras
We prove that, if A denotes a topologically simple real (non-associative) H*-algebra, then either A is a topologically simple complex H*-algebra regarded as real H*-algebra or there is a topologically simple complex H*-algebra B with *-involution r such that A = {b € B : r(b) = b*} . Using this, we obtain our main result, namely: (algebraically) isomorphic topologically simple real H*-algebras are actually * isometrically isomorphic
El estado actual de la investigación sobre la congruencia persona-ambiente. Propuesta de aplicación de un diseño experimental
En el presente trabajo se hace una revisión del estado actual de la investigación sobre
la congruencia persona-ambiente, analizando los principales problemas conceptuales
y metodológicos que existen en esta línea de investigación, así como las críticas que
recibe uno de los modelos más representativos del momento: el modelo de la elección
vocacional de Holland. Según este autor, los individuos suelen elegir profesiones que
son congruentes con sus características personales, y este ajuste tiene repercusiones
positivas tanto para el rendimiento como para la satisfacción en el trabajo. Además,
existen otros modelos que han sido propuestos desde diferentes perspectivas (el estrés
laboral, socialización laboral, ajuste laboral...). Teniendo en cuenta los inconvenientes
que presentan la mayoría de los estudios empíricos realizados, se plantea la posibilidad
de abordar el tema desde el paradigma experimental sugiriendo un diseño que permite
solventar, o al menos minimizar, dichos problemas.The aim of this paper is to review the present state of the person-environment
congruence research. We analyze the main conceptual and methodological problems
that this research have and the cristicisms that one of the most representative model
receives: Holland’s vocational choices model. This author suggests that the individuals
tend to choose occupations that are congruent with their personal characteristics, and
that this fi t (or adjustment) has positive implications both for the performance and job satisfaction. On the other hand, models from other approaches have also been proposed
(work stress, work socialization, laboral fi t (or adjustment...). Taking into account the
inconvenients that most of these kind of studies have, the possibility of start on this
subject from an experimental paradigm suggesting a design that may solve or reduce
these problems is proposed
Análisis de las motivaciones para la participación en la comunidad
En este artículo se describen y se analizan los tipos de motivación que conducen a los integrantes de una comunidad a participar en sus asociaciones. De una muestra de 274 estudiantes universitarios, 138 manifestaron pertenecer al menos a una asociación. Los participantes indicaron el nombre de la(s) asociación(es) y las incluyeron en diferentes categorías (política, cultural, asistencial, religiosa, deportiva, de ocio y otras). Cada participante expresó sus motivos para pertenecer a ella(s). Se realizó un análisis de contenido con sus respuestas, utilizando los diez tipos motivacionales de la teoría de los valores de Schwartz como categorías de codificación. Los resultados indican una diferente orientación por género para participar en las asociaciones. En general, los motivos colectivistas están más representados en la participación en la comunidad que los motivos individualistas.This paper aims to describe the motivation types driving people of a community to participate in its associations. Out of a sample of 274 university students, 138 reported they belonged to at least one association. Participants reported the name of the association(s) and included it/them in different categories (political, cultural, assistencial, religious, sporting, leisure and others). Every participant expressed his/her motives to participate there. A content analysis was made on their answers, using the ten motivational types of Schwartz's theory of values as coding categories. Results show a differential gender orientation to participate in different types of associations. In general, collectivist motives are more represented in community participation than individualist motives
Miape web toolkit: a user-friendly work frame to conncect and share proteomics standards in the lab
Comunicaciones a congreso
Informe automático y análisis de reproducibilidad de experimentos proteómicos cualitativos mediante la herramienta "MIAPE extractor"
Comunicaciones a congreso
Tissue remodelling and increased DNA damage in patients with incompetent valves in chronic venous insufficiency
Chronic venous insufficiency (CVI), in which blood return to the heart is impaired, is a prevalent condition worldwide. Valve incompetence is a complication of CVI that results in blood reflux, thereby aggravating venous hypertension. While CVI has a complex course and is known to produce alterations in the vein wall, the underlying pathological mechanisms remain unclear. This study examined the presence of DNA damage, pro-inflammatory cytokines and extracellular matrix remodelling in CVI-related valve incompetence. One hundred and ten patients with CVI were reviewed and divided into four groups according to age (<50 and ≥50 years) and a clinical diagnosis of venous reflux indicating venous system valve incompetence (R) (n = 81) or no reflux (NR) (n = 29). In vein specimens (greater saphenous vein) from each group, PARP, IL-17, COL-I, COL-III, MMP-2 and TIMP-2 expression levels were determined by RT-qPCR and immunohistochemistry. The younger patients with valve incompetence showed significantly higher PARP, IL-17, COL-I, COL-III, MMP-2 and reduced TIMP-2 expression levels and a higher COL-I/III ratio. Young CVI patients with venous reflux suffer chronic DNA damage, with consequences at both the local tissue and systemic levels, possibly associated with ageing.This study (FIS-PI18/00912) was supported by the Instituto de Salud Carlos III (Plan Estatal de I + D+i 2013-2016) and co-financed by the European Development Regional Fund “A way to achieve Europe” (ERDF) and B2017/BMD-3804 MITIC-CM
Paleoseismological evidence of Holocene activity of the Los Tollos Fault (Murcia, SE Spain): A lately formed Quaternary tectonic feature of the Eastern Betic Shear Zone
[EN] The Los Tollos Fault is a recent and important feature of the Eastern Betic Shear Zone, one of the major tectonic structures in South
Iberia accommodating the convergence between Nubian and Eurasian plates in the western Mediterranean. The Los Tollos Fault became
active by the end of Middle Pleistocene introducing some paleogeographical modifications. Previously mapped as a secondary normal fault
related to the Carrascoy Fault, recent research evidences that the Los Tollos Fault is an independent Holocene active left-lateral reverse fault
extending for at least 15 km. Data analysis from 4 trenches dug across the fault has revealed the occurrence of at least two paleo-earthquake
events during the Holocene. The most recent event is dated between 2,740 and 2,140 yr BP (8th to 2nd centuries BC). The size of the paleoevents
is calculated to be Mw 6.3 – 6.6 following empirical regressions on surface rupture length. The recurrence interval is estimated to be
between 2,200-6,860 years, fitting a slip rate for the fault between 0.12 and 0.17 mm/yr. Such parameters highlight the Los Tollos Fault as
a tectonic structure with a considerable activity located relatively close to densely populated areas. These seismogenic parameters should
be considered in future reassessments of the seismic hazard of the region.[ES] La falla de Los Tollos es una estructura reciente e importante de la Zona de Cizalla de la Bética Oriental, la principal estructura del sureste
de la Península Ibérica que acomoda gran parte de la convergencia entre las placas de Eurasia y Nubia en el Mediterráneo Occidental. La
falla de Los Tollos, descrita inicialmente como una falla normal secundaria relacionada con la falla de Carrascoy, comenzó su actividad a
finales del Pleistoceno Medio generando algunas modificaciones paleogeográficas significativas. El trabajo que aquí presentamos demuestra
su activad durante el Holoceno con una cinemática lateral sinestral con componente inversa a lo largo de una longitud de 15 km, e independiente
de la Falla de Carrascoy. Del análisis de los datos obtenidos en 4 trincheras paleosismológicas realizadas a lo largo de la traza de
la falla, se han podido interpretar la ocurrencia de al menos 2 paleoterremotos durante el Holoceno, acotándose el evento más reciente entre
hace 2.740 y 2.140 años (siglos VIII a II a.C.). La magnitud máxima de estos paleoterremotos, estimada mediante correlaciones empíricas
que consideran la longitud de rotura en superficie de la falla, se encuentra entre Mw 6,3 y 6,6, con un periodo de recurrencia comprendido
entre 2.200 y 6.860 años. La tasa de deslizamiento neta calculada para la falla se estima entre 0,12 y 0,17 mm/a. Estos parámetros identifican
la falla de Los Tollos como una estructura activa situada en las cercanías de áreas densamente pobladas y ponen de manifiesto el interés
que tendría considerarla en futuras reevaluaciones de la peligrosidad sísmica en la región.FASEGEO Project (CGL2009-09726) funded by the
Spanish Ministry of Science and Innovation.Peer reviewe
Longitudinal association of telomere length and obesity indices in an intervention study with a Mediterranean diet: the PREDIMED-NAVARRA trial
Background: Telomeres are nucleoprotein structures that protect the ends of eukaryote chromosomes. Shorter telomere length (TL) is associated with some age-related human disorders, but its relationship with obesity or adiposity parameters remains unclear. Objective: The aim of this study was to assess the relationship between TL and changes in adiposity indices after a 5-year nutritional intervention. Design and subjects: TL was measured by quantitative real-time PCR in 521 subjects (55-80 years, 55% women). Participants were randomly selected from the PREDIMED-NAVARRA centre after they completed a 5-year intervention programme. Anthropometric parameters were directly measured by trained personnel at baseline and on a yearly basis thereafter. TL at baseline and changes in TL after a 5-year intervention were assessed. Results: Higher baseline TL significantly predicted a greater decrease in body weight (B=−1.09 kg, 95% confidence interval (CI): −2.01 to −0.16), body mass index (BMI) (B=−0.47 kg m−2, 95% CI: −0.83 to −0.11), waist circumference (B=−1.15 cm, 95% CI: −2.28 to −0.01) and waist to height ratio (B=−0.008, 95% CI: −0.010 to −0.001) in multiple-adjusted models. In addition, changes in TL during the 5-year intervention were inversely associated with changes in the four anthropometric variables. The reduction in adiposity indices during the intervention, associated with increasing TL, was even higher among subjects with the longest telomeres at baseline. Logistic regression analysis showed that the risk of remaining obese after 5 years was lower in those participants who initially had the longest telomeres and increased their TL after intervention (odds ratio=0.27, 95% CI: 0.03-2.03). Conclusions: Our research suggests that TL is inversely associated with changes in obesity parameters. The assessment of TL can provide further insights for biological pathways leading to adiposity. We show for the first time an improvement of obesity indices when an increase in TL is observed after a 5-year Mediterranean diet intervention
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