| 1. |
- Abdalla, H., et al.
(författare)
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TeV Emission of Galactic Plane Sources with HAWC and HESS
- 2021
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Ingår i: Astrophysical Journal. - : Institute of Physics Publishing (IOPP). - 0004-637X .- 1538-4357. ; 917:1
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Tidskriftsartikel (refereegranskat)abstract
- The High Altitude Water Cherenkov (HAWC) observatory and the High Energy Stereoscopic System (H.E.S.S.) are two leading instruments in the ground-based very-high-energy gamma-ray domain. HAWC employs the water Cherenkov detection (WCD) technique, while H.E.S.S. is an array of Imaging Atmospheric Cherenkov Telescopes (IACTs). The two facilities therefore differ in multiple aspects, including their observation strategy, the size of their field of view, and their angular resolution, leading to different analysis approaches. Until now, it has been unclear if the results of observations by both types of instruments are consistent: several of the recently discovered HAWC sources have been followed up by IACTs, resulting in a confirmed detection only in a minority of cases. With this paper, we go further and try to resolve the tensions between previous results by performing a new analysis of the H.E.S.S. Galactic plane survey data, applying an analysis technique comparable between H.E.S.S. and HAWC. Events above 1 TeV are selected for both data sets, the point-spread function of H.E.S.S. is broadened to approach that of HAWC, and a similar background estimation method is used. This is the first detailed comparison of the Galactic plane observed by both instruments. H.E.S.S. can confirm the gamma-ray emission of four HAWC sources among seven previously undetected by IACTs, while the three others have measured fluxes below the sensitivity of the H.E.S.S. data set. Remaining differences in the overall gamma-ray flux can be explained by the systematic uncertainties. Therefore, we confirm a consistent view of the gamma-ray sky between WCD and IACT techniques.
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| 2. |
- Barbosa, Gabriel, 1980, et al.
(författare)
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Effects of pulsed electric field-assisted osmotic dehydration and edible coating on the recovery of anthocyanins from in vitro digested berries
- 2019
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Ingår i: Foods. - : MDPI AG. - 2304-8158. ; 8:10
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Tidskriftsartikel (refereegranskat)abstract
- Berry fruits, such as strawberries and blueberries, are rich sources of anthocyanins. Several studies have been made on the impact of non-thermal treatments on safety, shelf-life and nutritional characteristics of such products, but the effects of these processes on anthocyanin stability during digestion in the gastrointestinal tract are still not completely clear. The aim of this study was to assess the recovery of anthocyanins after simulated gastrointestinal digestion of (1) strawberry samples, pre-treated with pulsed electric field (PEF) at 100 or 200 V·cm−1, prior to osmotic dehydration (OD), and (2) blueberry samples coated with chitosan and procyanidin. After digestion, a significantly higher content of cyanidin-3-O-glucoside and malvidin-3-O-glucoside was quantified by LC-MS/MS in processed strawberry and blueberry samples, compared with the controls. The highest recovery of cyanidin-3-O-glucoside was detected in digested strawberry samples osmotically dehydrated with trehalose. The recovery of malvidin-3-O-glucoside was highest in digested blueberries coated with chitosan and stored for 14 days, compared with untreated samples or samples coated with chitosan and procyanidin. Our study shows the potential of mild PEF treatments combined with OD, or the use of edible coating, to obtain shelf-stable products without substantially affecting the composition or the stability of anthocyanins during digestion in the upper gastrointestinal tract.
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| 3. |
- Barbosa, Maria Miguel, et al.
(författare)
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Adaptation and validation of the person-centered care assessment tool (P-CAT) to the Portuguese population
- 2023
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Ingår i: International Journal of Older People Nursing. - : John Wiley & Sons. - 1748-3735 .- 1748-3743. ; 18:2
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Tidskriftsartikel (refereegranskat)abstract
- Background: The relevance of person-centred care as an optimising approach to the quality of care provided to older adults has sparked the development of important instruments that measure this approach at residential care facilities and requires validation for the Portuguese population.Objectives: This study aims to adapt and validate the Person-centered Care Assessment Tool (P-CAT) to the Portuguese population.Methods: The P-CAT assesses the level of person-centred care provided by residential care facilities, according to staff. The process of adapting the P-CAT to the Portuguese population includes its translation, backtranslation and a pilot study. To recruit participants for the validation study, we contacted the Portuguese residential care facilities with emails provided in the official registries, and the study was also divulged on social media.Results: The study had the participation of 573 staff members. The mean score of P-CAT was 50.76 (SD = 7.65). The exploratory factor analysis showed three dimensions: the extent of care personalisation, the amount of organisational support and the degree of environmental accessibility. The results show good internal consistency for the total scale (α = 0.809) and good temporal stability in the test–retest assessed by intraclass correlation coefficient (0.893).Conclusions: This version of the P-CAT for the Portuguese population has shown adequate psychometric properties and contributes to the study of care provided at residential care facilities in Portugal through self-reporting from staff.Implications for practice: The availability of this instrument is useful for professional practice and research purposes and supports technical and scientific advancements that are necessary for the evolution of care frameworks.
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| 4. |
- Basso, Marcos Fernando, et al.
(författare)
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Overexpression of a soybean Globin (GmGlb1-1) gene reduces plant susceptibility to Meloidogyne incognita
- 2022
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Ingår i: Planta. - : SPRINGER. - 0032-0935 .- 1432-2048. ; 256:4
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Tidskriftsartikel (refereegranskat)abstract
- Non-symbiotic globin class #1 (Glb1) genes are expressed in different plant organs, have a high affinity for oxygen, and are related to nitric oxide (NO) turnover. Previous studies showed that soybean Glb1 genes are upregulated in soybean plants under flooding conditions. Herein, the GmGlb1-1 gene was identified in soybean as being upregulated in the nematode-resistant genotype PI595099 compared to the nematode-susceptible cultivar BRS133 during plant parasitism by Meloidogyne incognita. The Arabidopsis thaliana and Nicotiana tabacum transgenic lines overexpressing the GmGlb1-1 gene showed reduced susceptibility to M. incognita. Consistently, gall morphology data indicated that pJ2 nematodes that infected the transgenic lines showed developmental alterations and delayed parasitism progress. Although no significant changes in biomass and seed yield were detected, the transgenic lines showed an elongated, etiolation-like growth under well-irrigation, and also developed more axillary roots under flooding conditions. In addition, transgenic lines showed upregulation of some important genes involved in plant defense response to oxidative stress. In agreement, higher hydrogen peroxide accumulation and reduced activity of reactive oxygen species (ROS) detoxification enzymes were also observed in these transgenic lines. Thus, based on our data and previous studies, it was hypothesized that constitutive overexpression of the GmGlb1-1 gene can interfere in the dynamics of ROS production and NO scavenging, enhancing the acquired systemic acclimation to biotic and abiotic stresses, and improving the cellular homeostasis. Therefore, these collective data suggest that ectopic or nematode-induced overexpression, or enhanced expression of the GmGlb1-1 gene using CRISPR/dCas9 offers great potential for application in commercial soybean cultivars aiming to reduce plant susceptibility to M. incognita.
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| 5. |
- Carvalho, Sérgio A., et al.
(författare)
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Self-as-context and depressive symptoms in the general population : A further analysis of the self experiences questionnaire
- 2022
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Ingår i: Current Psychology. - : Springer. - 1046-1310 .- 1936-4733. ; 41:12, s. 8897-8907
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Tidskriftsartikel (refereegranskat)abstract
- The current study aims to contribute to the psychometric validation of the Self Experiences Questionnaire (SEQ), a measure of self-as-context as conceptualized by Acceptance and Commitment Therapy, and to contribute to a better understanding of the relationship between self-as-context, other psychological flexibility processes, and depressive symptoms. The sample (N = 266; 72.6% women) was obtained through paper-pencil and online collection methods in the general Portuguese population. Confirmatory factor analysis, reliability analyses, and convergent and divergent analyses were conducted. A mediation analysis of the effects of self-as-distinction and self-as-observer on depression symptoms through openness to experience, behavioral awareness, and valued action (while controlling for brooding) was performed using PROCESS. Items 8, 12 and 15 were removed to achieve the best model fit, which resulted in a 12-item final version of the SEQ. This version appears to be a psychometrically valid two-dimensional measure of self-as-distinction and self-as-observer, as well as a one global measure of self-as-context. Results from mediation analyses suggested that the relationship of self-as-observer and self-as-distinction with depressive symptoms is mediated by the ability to be behaviorally aware and to act according to personal values, but not by the ability to be open to experience. The behaviorally-oriented aspects of psychological flexibility seem to have particular importance on the presentation of depressive symptoms. More studies are nonetheless needed to analyze SEQ's structure and validity in order to attain a consensual version of the questionnaire.
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| 6. |
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| 7. |
- Mendieta-Leiva, Glenda, et al.
(författare)
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EpIG-DB: A database of vascular epiphyte assemblages in the Neotropics
- 2020
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Ingår i: Journal of Vegetation Science. - : Wiley. - 1100-9233 .- 1654-1103. ; 31, s. 518-528
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Tidskriftsartikel (refereegranskat)abstract
- Vascular epiphytes are a diverse and conspicuous component of biodiversity in tropical and subtropical forests. Yet, the patterns and drivers of epiphyte assemblages are poorly studied in comparison with soil-rooted plants. Current knowledge about diversity patterns of epiphytes mainly stems from local studies or floristic inventories, but this information has not yet been integrated to allow a better understanding of large-scale distribution patterns. EpIG-DB, the first database on epiphyte assemblages at the continental scale, resulted from an exhaustive compilation of published and unpublished inventory data from the Neotropics. The current version of EpIG-DB consists of 463,196 individual epiphytes from 3,005 species, which were collected from a total of 18,148 relevés (host trees and ‘understory’ plots). EpIG-DB reports the occurrence of ‘true’ epiphytes, hemiepiphytes and nomadic vines, including information on their cover, abundance, frequency and biomass. Most records (97%) correspond to sampled host trees, 76% of them aggregated in forest plots. The data is stored in a TURBOVEG database using the most up-to-date checklist of vascular epiphytes. A total of 18 additional fields were created for the standardization of associated data commonly used in epiphyte ecology (e.g. by considering different sampling methods). EpIG-DB currently covers six major biomes across the whole latitudinal range of epiphytes in the Neotropics but welcomes data globally. This novel database provides, for the first time, unique biodiversity data on epiphytes for the Neotropics and unified guidelines for future collection of epiphyte data. EpIG-DB will allow exploration of new ways to study the community ecology and biogeography of vascular epiphytes.
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| 8. |
- Rosa, Augusto H.B., et al.
(författare)
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SYSTEMATIC POSITION AND CONSERVATION ASPECTS OF MELINAEA MNASIAS THERA (LEPIDOPTERA: NYMPHALIDAE: DANAINAE)
- 2024
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Ingår i: Nature Conservation Research. - 2500-008X. ; 9:1, s. 1-8
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Tidskriftsartikel (refereegranskat)abstract
- The tribe Ithomiini (Nymphalidae: Danainae) includes nearly 400 species of butterflies distributed from Mex-ico to Northern Argentina, and adults of all species are aposematic and the main models in several Neotropical mimicry rings. The subtribe Melinaeina, a small group composed of five genera of large ithomiines, is the sister group of all remaining groups in the tribe Ithomiini. With 14 recognised species, the genus Melinaea is the most species rich, and also the most widespread within the Melinaeina. From all species of the genus, Melinaea mnasias is considered very rare and a little known one. This is also true for Melinaea mnasias thera, a subspecies from the Atlantic Forest with less than 20 specimens known in all world museums. Studies com-bining systematics, ecology, biogeography and natural history are priority in tropical areas, especially when focusing on threatened species. Thus, the aim of this study was to compile all available knowledge on the threatened M. mnasias thera, providing information to future management plans focusing on the conservation of this butterfly and its habitats. Data were compiled from scientific collections and personal observations, and the systematics of species of Melinaea was assessed by DNA sampling and analysis. The obtained phy-logeny recovered the subtribe Melinaeina organised in two clades, the first composed by Olyras + Paititia and the second by Eutresis + (Athyrtis + Melinaea). Melinaea mnasias thera was recovered as a sister to M. mnasias lucifer. A total of only 17 specimens of M. mnasias thera from four Brazilian localities were found in all revised collections. However, well-preserved forests are present only at one of these localities, in the southern Bahia state, from where a recent specimen has been collected, suggesting that the last populations of M. mnasias thera are restricted to this region. If this is true, the real conservation status of this species could be much more critical than the estimated.
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| 9. |
- Trindade, Inês A., 1990-, et al.
(författare)
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Further validation of the cognitive fusion questionnaire – chronic illness (CFQ-CI) in different health condition samples
- 2020
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Ingår i: Journal of Contextual Behavioral Science. - : Elsevier. - 2212-1447. ; 16, s. 45-48
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Tidskriftsartikel (refereegranskat)abstract
- CFQ-CI was previously developed and preliminarily validated in a study with a single online-recruited inflammatory bowel disease (IBD) sample. The current study presents a further validation of CFQ-CI in four different samples of patients with chronic health conditions: a sample of 82 women with breast cancer, an online-recruited mixed sample of 100 people with cancer, a sample of 69 people with IBD, and an online-recruited mixed chronic illness sample of 93 participants. Confirmatory Factor Analyses, multi-group, reliability, and differences analyses were conducted.Results indicated that the scale is a robust unidimensional 7-item measure of chronic illness-related cognitivefusion, with excellent reliability and structural validity across the four studied samples and in both paper-penciland online-based collection methods. Measurement invariance was not established across the samples, suggesting that CFQ-CI does not appear tofunction equivalently across different illness diagnoses.This study confirms CFQ-CI as a robust, adequate, and simple measure of chronic illness-related cognitive fusion that can be used in different behavioural medicine research and clinical contexts. As the scale does not seem to present measurement invariance, comparing scores between different illness groups is not recommended.
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| 10. |
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