94 research outputs found
Medico-legal age estimation in a sub-adult portuguese population: validation of Atlas Schour and Massler and London
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited."Introduction: Age estimation in children and adolescents often depends on morphological methods, such as
examination of dental development.
Objectives: The aim of this project was to validate, in a Portuguese population, two forensic methods of dental age estimation â Schour and Massler charts and the London atlas.
Materials and Methods: The test sample was composed by 108 dental radiographs of living and known-age
individuals. Dental age was estimated according to each method. Chronological age was then compared to the
estimated dental age using individual t-test and paired t-test.
Results: Results showed that the Schour and Massler charts underestimated age and the London atlas
overestimated age. Nevertheless, the London atlas performed better in all measures. Mean differences for both the London atlas and Schour and Massler were 0,1389 and -5,4167 months respectively. Schour and Massler charts showed significant statistical difference between dental age and chronological age (p <0.05).
Discussion and Conclusions: We conclude that, in the evaluated sample, age estimation using the London atlas
represents an improvement in forensic age estimation from developing teeth. Further studies should be done with a larger Portuguese population sample.
Material orgĂąnico de superfĂcie em solos florestais sob diferentes paisagens da Mata AtlĂąntica.
O bioma Mata AtlĂąntica Ă© considerado um ?hotspot? por conter uma alta diversidade de espĂ©cies e um alto grau de endemismo. AlĂ©m de abrigar grande parte da população brasileira, este bioma encontra-se altamente fragmentado e Ă© considerado um bioma estratĂ©gico para a conservação. Nesse sentido, a utilização de ferramentas simples para a avaliação dos processos geobioquĂmicos, como a serapilheira (Formas de Humus) parecem interessantes. Portanto, o trabalho tem como alvo avaliar e quantificar as Formas de Humus em gradiente altitudinal. Para esse fim, foram escolhidos 3 municĂpios da paisagem da Mata AtlĂąntica em diferentes altitudes, e avaliados o material orgĂąnico de superfĂcie de dois sistemas (Natural e Plantios de Eucalipto) em cada municĂpio. Os resultados mostram uma clara diferença entre os estoques da serapilheira com a altitude, sendo entre os sistemas naturais, os do municĂpio de Friburgo com os maiores estoques. Mudanças nos estoques de serapilheira, como quantidade de galhos, dos plantios de Eucalipto parecem responder positivamente a estrutura e a idade dos sistemas. Os resultados tambĂ©m mostram associaçÔes positivas entre quantidade de material fresco e quantidade de raĂzes finas. Por fim, o estudo com serapilheira, a luz das Formas de Humus, pode ajudar a diagnosticar e classificar sistemas
Employeesâ fit to telework and work well-being: (in)voluntariness in telework as a mediating variable?
Purpose: The present study aims to examine the mediating role of (in)voluntariness in teleworking in explaining the relationship between employeesâ fit to telework and work well-being (i.e. work engagement and exhaustion). Design/methodology/approach: A cross-sectional survey design was used in this study. The sample comprised 222 individuals performing telework in Portugal. Statistical analyses employed were descriptive statistics, Pearsonâs correlation, confirmatory factor and structural equation analyses, and mediation analysis using Hayes Process macro. Findings: The findings confirmed the hypothesis that employeesâ fit to telework raises the voluntariness in telework and decreases involuntariness in telework. However, contrary to expectations, no significant relationships were found between voluntariness in telework, work engagement and exhaustion. Yet, involuntariness in telework showed a significant role in decreasing work engagement and increasing workersâ exhaustion. The mediating role of involuntariness in telework was confirmed in explaining the relationship between employeesâ fit to telework and exhaustion. Practical implications: Managers in global firms can draw from the results to understand how employeesâ fit to telework directly and/or indirectly contributes to work well-being and develop human resource (HR) management practices aiming to increase employeesâ fit to telework. Originality/value: Although teleworking is already studied, to the best of the authorsâ knowledge, no studies have analyzed the same conceptual model employeesâ fit to telework, (in)voluntariness in teleworking and work well-being.info:eu-repo/semantics/acceptedVersio
Estabilidade de agregados em ĂĄgua: anĂĄlise crĂtica e padronização.
bitstream/item/128680/1/ComTec-57-Estabilidade-Agregados.pd
Through the lens of workersâ motivation: does it relate to workâfamily relationship perceptions?
Workersâ motivations and the workâfamily relationship are two subjects that have been capturing the attention of researchers and practitioners. However, to date, little is known about the link between the two subjects. Thus, this research aimed to investigate the relationships among each type of motivation conceptualized in self-determination theory and workâfamily conflict, workâfamily enrichment, and workâfamily balance. In addition, the current study intended to investigate the relationships among workâfamily conflict, workâfamily enrichment, and Workâfamily balance. Data were collected through a self-administered questionnaire. To test the hypotheses, the PROCESS macro was used. The results suggested that intrinsic motivation is negatively associated with workâfamily conflict and positively associated with workâfamily enrichment and workâfamily balance. Additionally, identified regulations seem to be positively associated with workâfamily enrichment and workâfamily balance. However, contrary to expectations, this study revealed a positive relationship between introjected regulation and workâfamily enrichment and workâfamily balance. Concerning external regulation (material and social) and amotivation, globally, the findings were consistent with the hypotheses, i.e., the higher the external regulation and amotivation, the higher workâfamily conflict and the lower the workâfamily enrichment and workâfamily balance. Moreover, the higher the workâfamily conflict, the lower the workâfamily balance, and the higher the workâfamily enrichment, the higher the workâfamily balance. Theoretical and practical implications are discussed.info:eu-repo/semantics/publishedVersio
Oral anticoagulation on patients with atrial fibrillation: are we doing a good job?
Abstract in proceedings of the Fourth International Congress of CiiEM: Health, Well-Being and Ageing in the 21st Century, held at Egas Monizâ University Campus in Monte de Caparica, Almada, from 3â5 June 2019.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.info:eu-repo/semantics/publishedVersio
Bench-scale production of polyhydroxyalkanoates and other valuable biomaterials from xylose-rich lignocellulosic hydrolysates
Communication at the BioTech 2017 and 7th Czech-Swiss Symposium with Exhibition. June 13-17, 2017, Prague, Czech Republicinfo:eu-repo/semantics/publishedVersio
Identification of potentially inappropriate medications with risk of major adverse cardio- and cerebrovascular events among elderly patients
Abstract in proceedings of the Fourth International Congress of CiiEM: Health, Well-Being and Ageing in the 21st Century, held at Egas Monizâ University Campus in Monte de Caparica, Almada, from 3â5 June 2019.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.info:eu-repo/semantics/publishedVersio
The impact of pH modulation on the rhizosphere bacteriome of maize and bean.
In soils, pH stands as the main factor modulating bacterial communities' composition. However, most studies address its effects in bulk soils in natural systems, with few focusing on its effects in the rhizosphere of plants. Predicting pH effects in the rhizosphere is an important step towards successful microbiome manipulation, aiming to increase crop production. Here, we modulated an acidic soilâs pH to four different ranges (4.7, 5.2, 7.5 and 8.2), while correcting for fertility differences among ranges, thus isolating pH effects from other physicochemical characteristics. Then, two crops with distinct metabolisms (maize and bean) were cultivated in a greenhouse experiment and the effects of pH and cover crops on the rhizosphere bacteriome after 90 days explored through 16S rRNA gene sequencing, aiming to characterize pH effects on the rhizosphere of two different plants across this gradient. Alpha diversity indexes (OTU richness and Shannon index) were statistically different with pH but not crop species, with an interaction among factors. For beta diversity, both pH and crop species were significant modulators of community composition, without an interaction, but pH effects were 2.5 times bigger than those of plant species. Additionally, strong and significant positive correlations were observed between pH and Bacteroidetes and Deltaproteobacteria, while Actinobacteria, Planctomycetes and Acidobacteria were negatively correlated with pH. Regarding OTUs, 27 and 46 were correlated with pH in maize and beanâs rhizosphere, respectively, while 11 were shared between them. Altogether, these results provide valuable information on the isolated effect of pH in the rhizosphere of important crop plants, aiding future microbiome manipulation studies
Does oral polio vaccine have non-specific effects on all-cause mortality? Natural experiments within a randomised controlled trial of early measles vaccine.
BACKGROUND: BCG and measles vaccine (MV) may have beneficial non-specific effects (NSEs). If an unplanned intervention with a vaccine (a natural experiment) modifies the estimated effect in a randomised controlled trial (RCT), this suggests NSEs. We used this approach to test NSEs of triple oral polio vaccine (OPV). METHODS: During an RCT of 2 doses of MV at 4.5 and 9â
months versus 1 dose of MV at 9â
months of age, we experienced 2 natural experiments with OPV. We assessed whether these OPV experiments modified the effect of 2-dose MV in the MV trial. SETTING: MV RCT conducted in urban Guinea-Bissau 2003-2009. INTERVENTIONS: Natural experiments with OPV due to missing vaccine and the implementation of OPV campaigns. MAIN OUTCOME MEASURE: Changes in the mortality rate ratio (MRR) for 2-dose MV versus 1-dose MV. RESULTS: First, the MRR (2-dose/1-dose MV) overall was 0.70 (0.52 to 0.94), but the MRR was 1.04 (0.53 to 2.04) when OPV at birth (OPV0) was not given, suggesting that early priming with OPV was important for the effect of 2-dose MV. The effect of OPV0 depended on age of administration; the MRR (2-dose/1-dose MV) was 0.45 (0.29 to 0.71) for children receiving OPV0 in the first week of life, but 3.63 (0.87 to 15.2) for those receiving OPV0 after the first month of life (p=0.007, test of no interaction). Second, campaign-OPV may have reduced the difference between the randomisation groups since the MRR (2-dose/1-dose MV) was 0.60 (0.42 to 0.85) for children who had not received campaign-OPV before RCT-enrolment versus 0.72 (0.23 to 2.31) and 1.42 (0.70 to 2.90) for children who had received 1 or 2 doses of campaign-OPV-before-enrolment, respectively. CONCLUSIONS: Bissau had no polio infection during this trial, so OPV0 and campaign-OPV may have NSEs since they modified the effect of 2-dose MV in an RCT. Different interventions may interact to a much larger effect than usually assumed
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