O excesso de trabalho mata ou dá prazer? : Uma exploração dos antecedentes e consequentes do workaholismo

O objectivo deste trabalho é examinar o workaholismo em termos dos seus antecedentes e consequentes. A problemática tem sido pouco tratada na literatura especializada, pelo que a investigação aproveitou esta lacuna para realizar uma análise exploratória de alguns temas associados ao workaholismo. Utilizou-se o Work Addiction Risk Test (Robinson, 1998) para identificar os indivíduos que, numa empresa de cosméticos, maiores valores registaram no teste. Posteriormente, esses indivíduos foram entrevistados, a fim de explorar e conhecer as suas perspectivas relativamente aos conteúdos sob observação. Os resultados encontrados permitem tecer comparações entre o que é proposto na literatura e a realidade prática. O artigo discute a noção de workaholismo, as suas causas, os seus efeitos sobre as pessoas, e a perspectiva dos sujeitos sobre o tópico. Contrastam-se ainda os resultados da fase quantitativa com a fase qualitativa da investigaçãoinfo:eu-repo/semantics/publishedVersio

Psychopathy Checklist-Revised (PCL-R) factor structure in male perpetrators of intimate partner violence

Psychopathy Checklist-Revised (PCL-R) is the gold standard for assessing psychopathy. However, its factorial structure has been subject of debate, and different factor models have been proposed. Furthermore, research has not focused on the PCL-R factorial structure among intimate partner violence (IPV) perpetrators. We analyzed and compared the fit of nine alternative models of PCL-R among a sample of 242 IPV perpetrators. Results revealed PCL-R has adequate factor validity. The three-factor model without testlets provided the best fit to the current data. The three-factor model also showed good reliability, and the factors established differential associations to penal and personal variables thus revealing discriminant validity. In the current study, psychopathy was thus best conceptualized as a clinical construct comprising a particular affective functioning (e.g., shallow affect, lack of empathy), and a specific interpersonal (e.g., egocentricity, deception) and behavioral style (e.g., irresponsibility, impulsivity) among IPV perpetrators.Portuguese Foundation for Science and Technology and the Portuguese Ministry of Science, Technology and Higher Education through national funds and co-financed by FEDER through COMPETE2020 under the PT2020 Partnership Agreement (POCI-01-0145-FEDER-007653). The study was also supported by Grant SFRH/ BD/66110/200

Performance of Graphene/Polydimethylsiloxane Surfaces against S. aureus and P. aeruginosa Single- and Dual-Species Biofilms

The increasing incidence of implant-associated infections has prompted the development of effective strategies to prevent biofilm formation on these devices. In this work, pristine graphene nanoplatelet/polydimethylsiloxane (GNP/PDMS) surfaces containing different GNP loadings (1, 2, 3, 4, and 5 wt%) were produced and evaluated on their ability to mitigate biofilm development. After GNP loading optimization, the most promising surface was tested against single- and dual-species biofilms of Staphylococcus aureus and Pseudomonas aeruginosa. The antibiofilm activity of GNP/PDMS surfaces was determined by the quantification of total, viable, culturable, and viable but nonculturable (VBNC) cells, as well as by confocal laser scanning microscopy (CLSM). Results showed that 5 wt% GNP loading reduced the number of total (57%), viable (69%), culturable (55%), and VBNC cells (85%) of S. aureus biofilms compared to PDMS. A decrease of 25% in total cells and about 52% in viable, culturable, and VBNC cells was observed for P. aeruginosa biofilms. Dual-species biofilms demonstrated higher resistance to the antimicrobial activity of GNP surfaces, with lower biofilm cell reductions (of up to 29% when compared to single-species biofilms). Still, the effectiveness of these surfaces in suppressing single- and dual-species biofilm formation was confirmed by CLSM analysis, where a decrease in biofilm biovolume (83% for S. aureus biofilms and 42% for P. aeruginosa and dual-species biofilms) and thickness (on average 72%) was obtained. Overall, these results showed that pristine GNPs dispersed into the PDMS matrix were able to inhibit biofilm growth, being a starting point for the fabrication of novel surface coatings based on functionalized GNP/PDMS composites

Long-term memory in financial prices: evidence from the Dutch stock market returns

Prepared for presentation at the Portuguese Finance Network International Conference 2014, Vilamoura, Portugal, June 18-20The purpose of this paper is to contribute to the discussion of long-term memory, focusing on the behavior of the main Dutch stock index.The analysis of the general characteristics of temporal frequency reveals that daily returns are non-ergodic, non-stationary and non-independent. Consequently, we have employed the rescaled-range analysis (R/S) and the detrended fluctuation analysis (DFA), under the fractional Brownian motion approach, and found slight evidence of long-term persistence. This suggests that this market is more prone to predictability ("Joseph effect"), but also trends that may be unexpectedly disrupted by discontinuities ("Noah effect"). Although the evidence of fractal dynamics has weak support, refutes the hypothesis of random walk with i.i.d. increments. This implies that the use of statistical limit arguments to determine conventional financial statistics, as used in the Capital Asset Pricing Model and option valuation models, is scientifically incorrect. Furthermore, a more localized (in time) study to identify the evolution of the degree of long-term memory over time showed a change in the characteristic index from persistent to anti-persistent, more evident after 2010. This suggests that the AEX market does not correspond to Efficient Market Hypotheis in strictly sense of Fama (1970), although it has progressed closer to this theoretical ideal during the worsening of the current international financial crisis

Uso de resíduos da indústria de papel e celulose em plantios florestais: aspectos técnicos e legais.

Introdução; Principais resíduos sólidos e semi-sólidos gerados em complexos integrados de celulose e papel; Aspectos técnicos e legais voltados à elaboração de projeto agronômico para uso de resíduos em plantios florestais; Caracterização e classificação dos resíduos quanto aos seus riscos potenciais ao meio ambiente e à saúde pública; Caracterização de resíduos sob o aspecto agronômico; Critérios para definição de doses, épocas e formas de aplicação; Avaliação de problemas de ordem ambiental; Avaliação da viabilidade econômica; Seleção e caracterização das áreas de aplicação; Monitoramento agronômico e ambiental da área de aplicação; Manuseio, transporte e armazenamento; Processos adicionais de tratamento.bitstream/item/145134/1/Doc.-291-S.Maeda.pd

Chylothorax in the neonate-A stepwise approach algorithm

Background: Chylothorax in neonates results from leakage of lymph from thoracic lymphatic ducts and is mainly congenital or posttraumatic. The clinical course of the effusion is heterogeneous, and consensus on treatment, timing, and modalities of measures has not yet been established. This review aims to present, along with levels of evidence and recommendation grades, all current therapeutic possibilities for the treatment of chylothorax in neonates. Methods: An extensive search of publications between 1970 and 2020 was performed in the PubMed, Cochrane Database of Systematic Reviews, and UpToDate databases. A stepwise approach algorithm was proposed for both congenital and traumatic conditions to guide the clinician in a rational and systematic way for approaching the treatment of neonates with chylothorax. Discussion and conclusion: The treatment strategy for neonatal chylothorax generally involves supportive care and includes drainage and procedures to reduce chyle flow. A stepwise approach starting with the least invasive method is advocated. Progression in the invasiveness of treatment options is determined by the response to previous treatments. A practical stepwise approach algorithm is proposed for both, congenital and traumatic chylothoraces

Development and validation of a scale to measure social isolation in adolescents

Background: There is a lack of questionnaires specifically designed to assess social isolation in adolescents. We developed and validated a self-report measure of social isolation in adolescents, the Social Isolation Questionnaire (QIS). Methods: A literature review on social isolation and mental health in adolescents indicated 20 questions to form QIS. Two cross-sectional surveys with 48 and 1,135 adolescents, respectively, evaluated the reproducibility and validity of QIS. Results: The Bland-Altman plot did not indicate a systematic difference between measurements 15 days apart. Bartlett’s sphericity test verified a correlation between the questions and the Kaiser-Meyer-Olkin test showed good adequacy (0.896) to the factor analysis. Exploratory factor analysis suggested the exclusion of three questions (loading factors <0.3), and eigenvalues (4.9 to 0.8) indicated that the questionnaire should be composed of three factors (dimensions). The Cronbach’s alpha indicated high internal consistency of the 17 questions (0.850 overall; Dimensions: 0.815 ‘feeling of loneliness’; 0.760 ‘friendship’; and, 0.680 ‘Family support’). The QIS score ranged from 0 to 131 (maximum social isolation score). Correlation between QIS and depressive symptoms (r=0.543) indicated the construct validity of QIS. Limitations: We evaluated QIS in the Portuguese version, thus translation and cultural adaptation are necessary to evaluate the questionnaire in other settings. Conclusions: We constructed and validated the QIS questionnaire, a self-administered questionnaire to assess social isolation in adolescents, composed of three dimensions; feeling of loneliness, friendship and family support. The QIS questionnaire seems a very promising tool to support practitioners and researchers in assessing social isolation among adolescents

Cure and discontinuation of treatment in a tuberculosis control state programme in Brazil: insights from dispensing data

Poster presented at the 45th ESCP Symposium on Clinical Pharmacy. 4-6 October 2016, Oslo, NorwayN/