742 research outputs found
Development and validation of a specific self-efficacy scale in adherence to a gluten-free diet
The aim of this study was to develop a scale to assess the levels of specific self-efficacy in order to enhance adherence to a gluten-free diet and the life quality of celiac patients. Celiac disease is a chronic small intestinal immune-mediated enteropathy precipitated by exposure to dietary gluten in genetically predisposed people. The only treatment is a strict lifelong gluten-free diet. Within the framework of Social Cognitive Theory, expectation of self-efficacy is understood as the degree in which a person believes himself to be capable of performing a certain task (e.g., adhering to a gluten-free diet), a construct which has been widely studied in its relation with adopting healthy behaviors, but scarcely in relation to celiac disease. A validation study was carried out in various stages: preparation of the protocol; construction of the questionnaire and a pilot run with 20 patients; validation of the scale with 563 patients and statistical analysis. A 25-item scale was developed. Feasibility was excellent (99.82% of participants completed all the questions). Factorial analysis pointed to the existence of five factors that explained 70.98% of the variance with a Cronbach alpha of 0.81 for the scale overall and between 0.64 and 0.90 for each factor. The scale showed a Spearman''s Rho coefficient of 0.279 with the General self-efficacy Scale. This easily administered scale provides good psychometric properties for evaluating specific self-efficacy of celiac patients in adhering to treatment. It seeks to be the first scale that provides not only a measurement of specific self-efficacy in celiac disease, but also to determine its levels for each of the areas as a first step toward designing interventions of self-management and empowerment programs to cope with the disease
La memoria: documento expansivo de la información contable de naturaleza externa
Desde la publicación del PGC-90 se han aprobado distintos planes sectoriales que han supuesto adecuar, a cada una de estas realidades, las normas generales de elaboración de información contable de naturaleza, principalmente, externa. Los cambios introducidos han significado la incorporación de criterios de valoración alternativos, la creación o modificación de ciertas cuentas a utilizar de forma específica, la adecuación de los modelos de balance y cuenta de pérdidas y ganancias y, sobre todo, la incorporación de información adicional en la memoria, respecto de la exigida con carácter general en el PGC-90
Dynamic redistribution of raft domains as an organizing platform for signaling during cell chemotaxis
Spatially restricted activation of signaling molecules governs critical aspects of cell migration; the mechanism by which this is achieved nonetheless remains unknown. Using time-lapse confocal microscopy, we analyzed dynamic redistribution of lipid rafts in chemoattractant-stimulated leukocytes expressing glycosyl phosphatidylinositol–anchored green fluorescent protein (GFP-GPI). Chemoattractants induced persistent GFP-GPI redistribution to the leading edge raft (L raft) and uropod rafts of Jurkat, HL60, and dimethyl sulfoxide–differentiated HL60 cells in a pertussis toxin–sensitive, actin-dependent manner. A transmembrane, nonraft GFP protein was distributed homogeneously in moving cells. A GFP-CCR5 chimera, which partitions in L rafts, accumulated at the leading edge, and CCR5 redistribution coincided with recruitment and activation of phosphatidylinositol-3 kinase γ in L rafts in polarized, moving cells. Membrane cholesterol depletion impeded raft redistribution and asymmetric recruitment of PI3K to the cell side facing the chemoattractant source. This is the first direct evidence that lipid rafts order spatial signaling in moving mammalian cells, by concentrating the gradient sensing machinery at the leading edge
Brief update on the satellite tagging of Atlantic swordfish
This paper provides a brief update of the study on habitat use for swordfish, developed within the
working plan of the Swordfish Species Group of ICCAT. A total of 9 miniPAT tags have been
deployed by observers on Portuguese and Spanish vessels and the Uruguayan research cruise in
the North and South Atlantic. Data from eight tags/specimens are available, four specimens
suffered from post-release mortality and one individual tag pop-up date has not occurred yet.
These preliminary results showed swordfish moved in several directions, travelling considerable
distances. Swordfish spent most of the daytime in deeper waters, being closer to the surface
during night-time. The main plan for the next phase of the project is to continue the tag
deployment during 2020 in several regions of the Atlantic Ocean and Mediterranean Sea
BRIEF UPDATE ON THE SATELLITE TAGGING OF ATLANTIC SWORDFISH
This paper provides a brief update of the study on habitat use for swordfish, developed within the
working plan of the Swordfish Species Group of ICCAT. A total of 9 miniPAT tags have been
deployed by observers on Portuguese and Spanish vessels and the Uruguayan research cruise in
the North and South Atlantic. Data from eight tags/specimens are available, four specimens
suffered from post-release mortality and one individual tag pop-up date has not occurred yet.
These preliminary results showed swordfish moved in several directions, travelling considerable
distances. Swordfish spent most of the daytime in deeper waters, being closer to the surface
during night-time. The main plan for the next phase of the project is to continue the tag
deployment during 2020 in several regions of the Atlantic Ocean and Mediterranean SeaEn prens
Testing the persistence of Carcharodontosauridae (Theropoda) in the Upper Cretaceous of Patagonia based on dental evidence
The deposits corresponding to the Upper Cretaceous Neuquén and San Jorge Gulf basins from northern and central Patagonia have provided two of the most complete sequences of terrestrial vertebrate faunas of all Gondwanan landmasses. Among the carnivorous components, the carcharodontosaurid theropods appeared as common elements during the Early Cretaceous and the earliest Late Cretaceous in northern and central Patagonia. Although recorded mostly in the lower Turonian, isolated teeth suggest their presence in younger strata in northern and central Patagonia, reaching the clade in the region as late as the early Maastrichtian. Here, we verify the assignment of such isolated teeth previously identified as belonging to Carcharodontosauridae from the Upper Cretaceous strata of northern and central Patagonia. Using three different methods, namely a cladistic analysis performed on a dentition-based data matrix, and discriminant and cluster analyses conducted on a large dataset of theropod crown measurements, we assign a tooth from Candeleros Formation to carcharodontosaurid theropods and teeth from Cerro Lisandro, Bajo Barreal, Portezuelo, Plottier and Allen formations to abelisaurid theropods. These new reappraisals provide additional evidence about the extinction of Carcharodontosauridae in South America at about the late Turonian–earliest Coniacian as part of a general faunistic turnover event, with the last clear evidence of this lineage in Patagonia coming from the early–middle Turonian.Fil: Meso, Jorge Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Juárez Valieri, R. D.. Gobierno de la Provincia de Río Negro. Ministerio de Turismo, Cultura y Deporte. Secretaría de Cultura; ArgentinaFil: Porfiri, Juan Domingo. Museo del Desierto Patagónico; Argentina. Universidad Nacional del Comahue. Museo de Ciencias Naturales; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería; ArgentinaFil: Da Silva Correa, Samuel Aparecido. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Martinelli, Agustín Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Casal, G. A.. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Canudo, J. I.. Universidad de Zaragoza; EspañaFil: Poblete, F.. Museo del Desierto Patagónico; ArgentinaFil: Dos Santos, D.. Museo del Desierto Patagónico; Argentina. Universidad Nacional del Comahue. Museo de Ciencias Naturales; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería; Argentin
Is the tiger shark (Galeocerdo cuvier) a coastal species? Expanding its distribution range in the Atlantic Ocean using at-sea observer data
captura asociada a la pesquería de palangre de superficie dirigida a pez espadaThe occurrence of tiger shark (Galeocerdo cuvier) in the Atlantic Ocean was assessed
using at-sea observer data from multiple pelagic longline fisheries (Japan, Portugal,
Spain, United States and Uruguay). Geographic positions of 2,764 tiger sharks,
recorded between 1993 and 2013 and covering a wide area of the Atlantic were
compared with the currently accepted distribution ranges of the species. Most of our
records fell outside the accepted distribution ranges in both the Southern and Northern
hemispheres. These results strongly suggest that the distribution range of the tiger
shark is considerably wider than previously described, particularly over the open oceanEn prensa1,834
Reading Brain in the Digital Age: An Experience of Philippine High School
The study aims to ascertain the significant relationship of digital reading profile and reading comprehension, and digital reading behavior and reading comprehension of Grade 7 students of Elpidio Quirino High School. The results will be obtained through the three phases of the study: digital reading profile and digital reading behavior survey, reading comprehension tests, and focus group discussion. The findings of the study show that the participants read more academic resources online or offline as opposed to the results from the qualitative data in which it shows that they preferred Wattpad, also respondents tend to use cellphone in reading digital materials. Based on the comparison made, the result shows no significant relationship. From the findings, due to its portability, cellphone is the commonly used device and Wattpad is the most commonly read digital reading material. It can be concluded that digital reading has no effect on the reading brain of the students. Based on the conclusions, it is suggested that through the inevitable emergence of technology, proper utilization and the collaboration of parents and teacher is vital to promote genuine love for reading
Distributional and reproductive aspects of the bigeye thresher shark (Alopias superciliosus) in the Atlantic ocean
Captura asociada a la pesquería de palangre de superficie dirigida a pez espadaThe bigeye thresher shark, Alopias supercilious is sometimes caught as bycatch in
pelagic longline fisheries targeting tunas and swordfish in the Atlantic Ocean. As part
of an ongoing cooperative program for fisheries and biological data collection, fishery
observer data from various fishing nations and projects were compiled and analyzed.
Those data sets include information on geographic location of the observations, as well
as size, sex and in some cases maturity stage. A total of 4371 bigeye threshers were
recorded throughout the Atlantic Ocean between 1992 and 2013, with the sizes ranging
from 70 to 305 cm FL (fork length). Considerable variability was observed in the catchat-
size, with particular emphasis on the tropical region where the mean sizes tended to
be smaller than in the other regions. The expected distribution of juvenile and adult
specimens also showed considerable variability, and the sex-ratios varied between
regions and size classes. Maturity ogives were fitted to data from 642 specimens, with
the median sizes at maturity estimated at 208.6 cm FL (corresponding to 349.1 cm TL)
for females and 159.2 cm FL (corresponding to 269.8 cm TL) for males. In addition, a
segmented regression model (SRM) was used for males, and two breakpoints (Bk1:
122.5cm FL, Bk2: 173.3cm FL) estimated, identifying transitions between the three
different maturity stages for male sharks (immature, maturing and mature). Only a few
pregnant females were recorded, always with the presence of two embryos (one per
uterus), and were distributed predominantly in the tropical northeast Atlantic closer the
African continent, and in the southwest region, with those regions possibly serving as
nursery areas for this species. These reproductive parameters, and especially the
estimated median sizes at maturity and low fecundity, highlight the vulnerability of this
species, reinforcing that the bigeye thresher tends to mature at a larger size than the
other species of the Alopiidae family. The biological and distributional patterns
presented can help managers adopt more informed and efficient conservation measures
for this species.En prensa0,000
The decay Bs -> mu+ mu-: updated SUSY constraints and prospects
We perform a study of the impact of the recently released limits on BR(Bs ->
mu+ mu-) by LHCb and CMS on several SUSY models. We show that the obtained
constraints can be superior to those which are derived from direct searches for
SUSY particles in some scenarios, and the use of a double ratio of purely
leptonic decays involving Bs -> mu+ mu- can further strengthen such
constraints. We also discuss the experimental sensitivity and prospects for
observation of Bs -> mu+ mu- during the sqrt(s)=7 TeV run of the LHC, and its
potential implications.Comment: 30 pages, 21 figures. v2: Improved discussion of constraints from B
-> tau nu, references adde
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