Repository logo

Browsing by Issue Date, starting with "2020-02"

Filter results by year or month
Now showing 1 - 10 of 67
  • A pseudorotaxane formed from a cucurbit[7]uril wheel and a bioinspired molecular axle with pH, light and redox-responsive properties
    Publication . Seco, André; Diniz, Ana Marta; Sarrato, João; Mourão, Henrique; Cruz, Hugo; Parola, A. Jorge; Basílio, Nuno
    A pH-, light- and redox-responsive flavylium-bipyridinium molecular dyad (bioinspired in natural anthocyanins) were synthesized and employed to devise a pseudorotaxane with the macrocycle cucurbit[7]uril (CB7) in aqueous solution. The inclusion complex was characterized by UV-Vis absorption, fluorescence emission, NMR, and electrochemical techniques which demonstrate the formation of a stable binary complex between the dyad and CB7 both under acidic and neutral conditions. It is noteworthy that the flavylium-bipyridinium tricationic dyad is only stable in highly acidic media, undergoing a reversible hydration reaction at slightly acidic or neutral pH to give a trans-chalcone-bipyridinium dication. 1H NMR experiments showed that in this last species the CB7 binds to the bipyridinium unit while in the tricationic species the macrocycle is positioned between the flavylium and the bipyridinium moieties. The different location of the CB7 wheel in the two dyad states allows control of the shuttling movement using light and pH stimuli that trigger the interconversion between these two species.
    2020-02Journal article Restricted access Show more
  • Gender differences on labour issues in hotel industry in the Algarve, Portugal: The perceptions of employees from two business groups
    Publication . Seabra, Fernando Miguel; Contreiras, Joaquim Pinto; Duarte, Patricia
    This research sought to analyse gender differences in perceptions about labour issues hold by female and male employees of hotel companies, a male-dominant working environment (Burguess, 2003; Ng & Pine, 2003). Issues such as job insecurity, organisational justice, work- family interface, career opportunities and leadership are addressed in this study. The preliminary findings suggest that man and women have different perceptions on work- family balance (with women reporting higher conflict between the two life domains), and leadership (with women considering more than men do not like to have a woman as their leader). Perceptions on job insecurity and organisational justice seem similar between groups.
    2020-02Conference object Open access Show more
  • Género e risco de queda no doente com acidente vascular cerebral
    Publication . Correia, Anabela; Pimenta, Carla
    Introdução: Tem sido demonstrado que homens e mulheres têm um perfil diferente de fatores de risco vasculares com diferente resposta ao tratamento médico e às intervenções terapêuticas; apresentando também níveis de incapacidade e complicações dispares. As quedas são uma das complicações mais comuns após AVC e alguns autores referem que as mulheres apresentam maior risco de queda. Objetivo do estudo: Comparar o risco de queda entre homens e mulheres vítimas de AVC.
    2020-02Conference object Open access Show more
  • Prevenção e tratamento da incontinência urinária
    Publication . Mota, Patrícia
    Durante a gravidez o corpo da mulher passa por diversas alterações fisiológicas e morfológicas que afetam o sistema músculo-esquelético, sendo a mais evidente o crescimento do útero e da região abdominal com alteração da postura e equilíbrio da futura mãe. Estes fatores combinados com as alterações hormonais e aumento de peso podem contribuir para diversas situações, ou agravamento de lesões pré-existentes. Uma das condições músculo-esqueléticas mais comuns relacionadas com a gravidez é a disfunção do pavimento pélvico, relacionada com o aumento de peso, sobretudo do útero, pelo crescimento do bebé dirante a gravidez e com possível estiramento e laceração dos músculos do pavimento pélvico durante o parto.
    2020-02Book part Open access Show more
  • Magnólia: a pele de Vera Castro
    Publication . Marques, Luísa Maria Lousã; Morais-Alexandre, Paulo; Andrade, Paulo (fotografias)
    Vera Barroso Morais de Castro (1946-2010) foi figurinista, cenógrafa, pintora e Professora da Escola Superior de Teatro e Cinema. Faleceu no dia 8 de fevereiro de 2010. Para assinalar os 10 anos da sua morte, surge a ideia de organizar uma obra onde se apresenta a sua biografia, um estudo sobre as suas criações para Teatro e Dança, os depoimentos de Tiago Bartolomeu Costa, Paulo Filipe Monteiro, Rui Mendes, Sérgio Loureiro, Rui Morais e Castro e ainda as fotografias dos estudos para figurinos e figurinos que se encontravam no arquivo da família.
    2020-02Book Open access Show more
  • Prevenção e tratamento da diástase abdominal
    Publication . Mota, Patrícia
    A diástase dos retos abdominais é uma condição caracterizada pela separação dos músculos retos abdominais ao longo da linha alba. Este aumento da distância entre os dois retos abdominais pode ser congénito, masé mais frequente que esta condição se verifique durante a gravidez, sobretudo no terceiro trimestre, imediatamente após o parto e durante as primeiras semanadas do puerpério.
    2020-02Book part Open access Show more
  • COPD: should diagnosis match physiology?
    Publication . Studnicka, Michael; Horner, Andreas; Sator, Lea; Buist, A. Sonia; Lamprecht, Bernd; Zhong, NanShan; Liu, Shengming; Lu, Jiachun; Ran, Pixin; Wang, Dali; Zheng, Jingping; Koopman, Mariana; Louw, Innocentia; Ludick, Ina; Olckers, Alta; Ryck, Johanna; Storbeck, Janita; Gislason, Thorarinn; Benedikdtsdottir, Bryndis; Jörundsdottir, Kristin; Gudmundsdottir, Lovisa; Ferreira, Reis; Gudmundsdottir, Sigrun; Gundmundsson, Gunnar; Nizankowska-Mogilnicka, Ewa; Frey, Jakub; Harat, Rafal; Mejza, Filip; Nastalek, Pawel; Pajak, Andrzej; Skucha, Wojciech; Szczeklik, Andrzej; Janson, Christer; Twardowska, Magda; Welte, Tobias; Bodemann, Isabelle; Geldmacher, Henning; Schweda-Linow, Alexandra; Gulsvik, Amund; Endresen, Tina; Svendsen, Lene; Tan, Wan C.; Wang, Wen; Olafsdottir, Inga Sif; Mannino, David M.; Cain, John; Copeland, Rebecca; Hazen, Dana; Methvin, Jennifer; Dantes, Renato B.; Amarillo, Lourdes; Berratio, Lakan U.; Fernandez, Lenora C.; Francisco, Norberto A.; Nisser, Katarina; Garcia, Gerard S.; de Guia, Teresita S.; Idolor, Luisito F.; Naval, Sullian S.; Reyes, Thessa; Roa, Camilo C.; Sanchez, Ma. Flordeliza; Simpao, Leander P.; Jenkins, Christine; Marks, Guy; Spetz-Nyström, Ulrike; Bird, Tessa; Espinel, Paola; Hardaker, Kate; Toelle, Brett; Burney, Peter G.J.; Amor, Caron; Potts, James; Tumilty, Michael; McLean, Fiona; Wouters, E.F.M.; Hägg, Gunilla; Wesseling, G.J.; Bárbara, Cristina; Rodrigues, Fátima; Dias, Hermínia Brites; Cardoso, João; Almeida, João; Matos, Maria João; Simão, Paula; Santos, Moutinho; Lund, Gun-Marie; Jõgi, Rain; Laja, Hendrik; Ulst, Katrin; Zhou, Yumin; Zobel, Vappu; Lill, Toomas-Julius; Koul, Parvaiz A.; Malik, Sajjad; Hakim, Nissar A.; Khan, Umar Hafiz; Chowgule, Rohini; Shetye, Vasant; Raphael, Jonelle; Almeda, Rosel; Kocabaş, Ali; Tawde, Mahesh; Tadvi, Rafiq; Katkar, Sunil; Kadam, Milind; Dhanawade, Rupesh; Ghurup, Umesh; Harrabi, Imed; Denguezli, Myriam; Tabka, Zouhair; Daldoul, Hager; Hancioglu, Attila; Boukheroufa, Zaki; Chouikha, Firas; Khalifa, Wahbi Belhaj; Idolor, Luisito F.; de Guia, Teresita S.; Francisco, Norberto A.; Roa, Camilo C.; Ayuyao, Fernando G.; Tady, Cecil Z.; Tan, Daniel T.; Hanta, Ismail; Banal-Yang, Sylvia; Balanag, Vincent M.; Reyes, Maria Teresita N.; Dantes, Renato. B.; Juvekar, Sanjay; Hirve, Siddhi; Sambhudas, Somnath; Chaidhary, Bharat; Tambe, Meera; Pingale, Savita; Kuleci, Sedat; Umap, Arati; Umap, Archana; Shelar, Nitin; Devchakke, Sampada; Chaudhary, Sharda; Bondre, Suvarna; Walke, Savita; Gawhane, Ashleshsa; Sapkal, Anil; Argade, Rupali; Turkyilmaz, Ahmet Sinan; Gaikwad, Vijay; Salvi, Sundeep; Brashier, Bill; Londhe, Jyoti; Madas, Sapna; Obaseki, Daniel; Erhabor, Gregory; Awopeju, Olayemi; Adewole, Olufemi; Umut, Sema; Unalan, Turgay; Studnicka, Michael; Dawes, Torkil; Lamprecht, Bernd; Sator, Lea; Bateman, Eric; Jithoo, Anamika; Adams, Desiree; Barnes, Edward; Freeman, Jasper; Hayes, Anton; Hlengwa, Sipho; Johannisen, Christine
    We are very grateful to Dr. Vanfleteren and colleagues for commenting on our data regarding overdiagnosed COPD2 and for putting this evidence into the framework of the current understanding of the disease. Based on the data presented on overdiagnosis, and on prior Burden of Obstructive Lung Disease (BOLD) observations on underdiagnosis,3 we truly believe that our worldwide community of pulmonary specialists could do much better in caring for this extremely prevalent and devastating disease. Overall, our data indicate that for one patient with a “matched” COPD diagnosis (ie, the presence of postbronchodilator airway obstruction and a positive recall of such a diagnosis), there is always another “mismatched,” false-positive patient with COPD. This patient possibly experiences all the untoward consequences, such as receiving expensive and possibly harmful medication, and missing chances for treatment of cardiac disease or asthma. On the contrary, for each “known” patient with COPD who has a poorly reversible airway obstruction, there are four to five other patients out there with yet undetected airways obstruction. Again, we are missing opportunities in these patients for smoking intervention, symptom relief, and prolongation of their lives.
    2020-02Journal article Open access Show more
  • Surveillance of mucorales resistance to azoles in the waste sorting industry: assessment of filtering respiratory protective devices and gloves
    Publication . Aranha Caetano, Liliana; Dias, M.; Almeida, Beatriz; Viegas, Carla
    The use of filtering respiratory protective devices (FRPD) and gloves is mandatory in the waste-sorting industry in Portugal as preventive of workers’ exposure to bioaerosols, including fungi. Mucorales order includes a large number of ubiquitous saprophytes species that can cause severe infections, such as mucormycosis, which is associated with a great deal of morbidity. The emergence of resistance to azoles among fungal species, including Mucorales, in the environmental challenges the management of severe fungal infections. The aim of this study was to assess the Mucorales burden retained by filtering respiratory protective devices (FRPD) (interior layer and exhalation valves) and present in gloves used in the waste sorting industry and to screen the resistance of Mucorales to azole-drugs in this occupational environment.
    2020-02Conference object Open access Show more
  • Comparison of static models in optimization of the determinants of the Portuguese SME capital structure
    Publication . Lourenco, Antonio; Mata, Mário Nuno; Arsénio, Tiago
    Purpose: This research aims to study the determinants of Portuguese companies’ capital structure. These results can be useful: 1) as guidelines for capital structure optimization and 2) as a support for efficient decisions in what concerns to capital structure. The literature shows that classical determinants of capital structure present statistical significance and pursue the expected sign for different econometric models tested. Method: The study follows a quantitative design research, with data collected in Amadeus from 500 SME`S in Portugal. The data spans from 2009 to 2018 totaling 4500 observations. We consider three dependent variables, i.e., total, medium and long term and short-term debt. In addition, we also employ seven independent variables (dimension; growth; liquidity; profitability; tangibility; profitability and business risk and singularity). We used a panel data approach based on fixed effects (FE) and of random effects models (RE). Findings: We found that there is no significant divergence of the experimental results obtained in the OLS model, with the fixed effects model and the random effects model, and the expected signals for some independent variables are generally the hypotheses formulated. If we compared both econometric models, it is verified that regardless of the model used, or of the dependent variable analyzed, some of the independent variables are statistically significant in all analyzed models. Furthermore, we also found evidence that the same expected signals are in agreement with the standard financial theory. These empirical findings may suggest good indicators for making more efficient decisions about the determinants of the capital structure. Research limitations/implications: The main contribution of this work is mainly in which econometric models had best results (according to existing theories) to analyse capital structures of companies. We found that the econometric model chosen for the analysis of the variables must be analysed insofar as some of the independent variables are sensitive to the expected signal and statistical significance, depending on the selected model. Practical implications: These findings will be very useful to top managers in the process of deciding the optimal structure of capital without neglecting the long run financial sustainability of the companies. Originality/value: This study is different because go beyond the classical capital structure determinants and also shows a comparison between different econometric models.
    2020-02Conference object Open access Show more
  • A perceção do risco de fraude na aquisição de bens e serviços e mecanismos adotados para a sua prevenção: o caso dos municípios portugueses
    Publication . Neves, Ana Cláudia; Alves, Gabriel Correia
    As organizações, independentemente da sua dimensão, estão sujeitas ao fenómeno da fraude e à necessidade de a prevenir. No sector público, torna-se cada vez mais essencial a identificação dos riscos, que distorcem o normal funcionamento das estruturas governativas e administrativas. Para o efeito, foi criado o Conselho de Prevenção da Corrupção como forma de ajudar na prevenção da corrupção e infrações conexas no sector público, onde se incluem naturalmente os municípios. Desta forma, o objetivo deste estudo foi analisar os riscos e as medidas dos planos de gestão de riscos de corrupção e infrações conexas, na área da aquisição de bens e serviços dos municípios. O estudo incidiu nos 25 maiores municípios portugueses, em termos de população, de acordo com os censos realizados em 2011. Não obstante estamos perante organizações com competências e objetivos muito comuns, verificando-se divergências significativas entre os municípios. As diferenças existentes respeitam, não só à natureza, ao potencial efeito e à probabilidade de ocorrência dos riscos identificados, que é normal, mas principalmente no que respeita ao âmbito e ao detalhe dos planos e ainda à tempestividade da sua atualização. Conclui-se que o risco é geralmente identificado pelos municípios, no âmbito dos planos de gestão de riscos de corrupção e infrações conexas, embora com estruturas e intensidades bastantes diferentes.
    2020-02Master thesis Open access Show more