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Risk factors that determine the severity of Covid-19 have not been fully elucidated. The aim of this study was to evaluate the role of coronary artery calcification (CAC) as a risk factor for death or mechanical ventilation (MV) of patients without known heart disease infected with Covid-19. We analyzed 283 consecutive in-patients with acute respiratory symptoms with chest computed tomography (chest-CT), without previous heart disease, and criteria for Covid-19 (RT-PCR positive and/or typical clinical and chest-CT findings). CAC was classified by the number of coronary segments affected as absent (0), mild (1-3), and severe calcification (more than 3). The association between CAC, CAC severity, and death or MV due to severe respiratory failure was assessed by logistic regression. The mean age was 58.7 +/- 15.7 years and 54.1% were men. Patients with CAC were older, more likely to have hypertension, and less likely to be obese. CAC was present in 75 patients (26.5%), of which 42 had a mild calcification and 33 had severe calcification, and was associated with death (OR=2.35, 95%CI: 1.01-5.48) or MV (OR=2.72, 95%CI: 1.20-6.20) adjusted for multiple confounders, with significant and increased odds ratio for the severe form of CAC (death: OR=3.70, 95%CI: 1.20-11.42; MV: OR=3.30, 95%CI: 1.09-9.95). We concluded that CAC was an independent risk factor for death or MV in Covid-19 patients without previous heart disease, particularly for those with severe calcification. CAC can be easily visualized on common chest-CT, widely used in evaluation of moderate to severe Covid-19.

Esta pesquisa teve como objetivo efetuar o mapeamento espaço temporal do uso e ocupação do solo, na bacia hidrográfica do rio Pimenta, no intervalo de 26 anos (1984-2010). Para tanto foram utilizadas imagens do satélite LANDSAT 5TM, órbita/ponto 220/062, resolução espacial de 30 m referente aos anos citados. A confecção dos mapas se deu em ambiente de sistema de informações geográficas (SIG) o software utilizado foi o QGIS (versão 2.0.1). A projeção cartográfica adotada foi UTM (Universal Transverse de Mercator) e o DATUM SIRGAS 2000. Os resultados indicaram que no intervalo temporal estudado houve uma perda de 1,07 Km2 de área coberta por vegetação. Essa perda está relacionada à intensa expansão urbana da área, o que modificou de forma irreversível a bacia hidrográfica do rio Pimenta

The combined action of several physical, chemical and biological factors cause the weathering of stone widely employed in the field of Cultural Heritage. These deterioration processes were well studied and the results have promoted the research and the development of novel types of consolidation treatments to overcome the limitations of traditional ones and to meet the requirements of the historic building substrates. During the collaborative project NANOMATCH [1], different consolidating agents for carbonate supports, as alkaline alkoxides, were synthesized and applied. In particular, calcium alkoxides are metallorganic compounds that, dissolved in an organic solvent, penetrate within the porous substrate and, reacting with moisture and carbon dioxide of the atmosphere, form a calcium carbonate coating on the pore walls [2]. In this study, calcium ethoxide with formula Ca(OEt)2, is characterized, tested and applied on carbonate stone with different porosity, properly selected among those widely employed in Italian Cultural Heritage. Its performance as stone consolidant product was investigated and compared with that of a commercial one, the nanolime Calosil E50. The kinetic of carbonation process of Ca(OEt)2 was evaluated with ?FT-IR and, to understand how the humidity can affect the final product, XRD was used. Preliminary results of the performance of this consolidating treatment applied on carbonate stones regarding the changing in mechanical characteristics- drilling resistance, ultrasonic velocity- and the observation of the coating- photocolorimetric measurements- are here reported and discussed.

Objectives:To characterize the patient population admitted to a psychiatric ward. Background:As the western population pyramid is shaped by a dominant ageing tendency, it is crucial to understand how it may influence the population of patients admitted to acute psychiatric care. This study aims to describe socio-demographic and clinical characteristics of patients admitted to a Portuguese psychiatric ward during a 5-years period. Materials and Methods:In this retrospective study, data from patients admitted between 2014 and 2018 to the psychiatric ward of the Vila Nova de Gaia / Espinho Hospital Center (CHVNG/E) was collected and analyzed. There were a total of 1899 admissions in the studied period.Results and Conclusions:A progressive reduction of admissions was verified within the 5-years period. Patients were mostly female gender (n=1027, 54.1%), had around 48 years of age (mean=48.02, SDu00b116.47) and were hospitalized for 2 weeks on average (median=14 days). An increase length of stay was verified across the studied period (u03c1=0.13, p

O trabalho teve como finalidade, estudar o efeito de várias auxinas sintéticas em formulações comerciais e do boro, sobre o enraizamento de estacas caulinares de kiwi (Actinidia chinensis Planch, cv Abbott.). As estacas utilizadas continham dois nós e duas folhas cortadas ao meio, com aproximadamente 10 cm de comprimento, onde o corte basal em bisel foi realizado logo abaixo de um nó e o apical acima do outro nó. O efeito das auxinas, sobre o enraizamento de estacas caulinares de kiwi foi verificado mediante os seguintes tratamentos, aplicados sobre as bases das estacas: T1 H(2)0); T2 (NAA 300 ppm); T3 (IBA 300 ppm); T4 (NAA 300 ppm + B); T5 (IBA 300 ppm + B); T6 (NAA 0,5%-pó) e T7 (IBA 0,5%-pó). Após o tratamento das estacas, estas foram plantadas em bandejas de enraizamento, contendo vermiculita pura e colocadas em câmara de nebulização, onde permaneceram por 120 dias, até a sua coleta. Para a avaliação do efeito de auxinas e do ácido bórico, sobre o enraizamento de estacas caulinares de kiwi, foram realizadas as seguintes observações: 1. porcentagem de estacas enraizadas; 2. análise de açúcares redutores e açúcares totais (em g/100 g de matéria seca); 3. análise de triptofano (em µg/100 mg de matéria seca). Os resultados obtidos no processo de enraizamento de estacas caulinares de kiwi (Actinidia chinensis Planch.) variedade Abbott, levou a concluir que o inverno e outono foram as melhores épocas de coleta dos ramos de auxinas para a confecção das estacas. O processo de enraizamento foi ainda incrementado com a aplicação exógena na base das estacas, sendo que o alto teor de açúcares redutores e totais beneficiou a maior porcentagem de enraizamento. This study was carried out to evaluate the effects of some synthetical auxins and boron trade formulations in the rooting of stem cuttings of some kiwi (Actinidia chinensis Planch) varieties. The experiment was carried out in a misty nebulization chamber in the Botany Department, Bioscience Institute, UNESP, Botucatu -SP. The stem cuttings had two nodes and two leaves cut in half, the basal cut was performed nearly a node and the apical one in the next upper node. The auxin effect in Actinidia chinensis Planch rooting stems was observed through seven different treatments: T1 H(2)0); T2 (NAA 300 ppm); T3 (IBA 300 ppm); T4 (NAA 300 ppm + B); T5 (IBA 300 ppm + B); T6 (NAA 0,5%-talc) and T7 (IBA 0,5%-talc), applied to the stem bases. After these treatments, the stems were placed in suitable rooting dishes, with pure vermiculite in a misty nebulization chamber for 120 days until collection. The evaluation of auxin and boric acid effects in kiwi stem cuttings was made based on the following observations: 1. the percentage of rooted stem cuttings; 2. reductor sugar and total sugar analyses (in g/100 g of dry matter); and 3. tryptophan analyses (in µg/100 mg of dry matter). The results showed that the winter and autumn seasons are the best for rooting of Actinidia chinensis Planch, stem cuttings. The use of auxins in the cuttings showed positive results too and the higher contents of reductor and total sugars, increased rooting percentage.

Este trabalho teve como objetivo o estudo da ação do etileno no amadurecimento de frutos de manga, tentando contribuir para o conhecimento da fisiologia do amadurecimento destes frutos. Foram utilizadas mangas (Mangifera indica L.), variedade Keitt, colhidas em estágio pré-climatérico. Estes frutos receberam tratamento com ethrel (500 e 1.000 ppm, com exceção da testemunha) e foram submetidos às seguintes determinações: pH, acidez, índice refratométrico e açúcares totais. A análise e interpretação dos resultados mostrou a inexistência de diferença estatística entre esses 3 tratamentos, indicando que a aplicação de ethrel não trouxe nenhuma vantagem na melhoria de qualidade dos frutos. Ethylene action on mango fruits was studied in relation to the ripening physiology of these fruits. Mango (Mangifera indica L.), Keitt variety, were harvested in the pre-climateric stage. These fruits, after receiving Ethrel treatment (500 e 1,000 ppni, except for control), were analized for pH, acidity, refratometric index and total sugars. The analysis and interpretation of the results showed no statistical differences among treatments, showing that ethrel didn't improve the fruits quality.

Estudaram-se as interações entre os ácidos indol-butírico, alfa-naftaleno-acético e bórico no desenvolvimento de raízes em estacas de porta-enxertos de videira (Vitis vinifera L.). As estacas tinham aproximadamente 25 cm de comprimento e, necessariamente, 2 gemas, sendo obtidas em três épocas distintas (janeiro, abril e julho) e colocadas para enraizar em bandejas de isopor, tendo vermiculita como substrato, e mantidas sob nebulização. O tratamento constou da imersão de 2,5 cm da base das estacas em soluções, por um tempo de imersão de 1 minuto. Os tratamentos utilizados corresponderam a: 1 .000; 2.000 e 5.000 ppm de IBA; 1.500 e 3.000 ppm de NAA; 150 microgramas/ml de H3BO3; IBA 1.000; 2.000 e 5.000 + H3BO3 150 microgramas/ml e H2O. Avaliaram-se a porcentagem de enraizamento, o número médio de raízes formadas por estaca e o comprimento médio das raízes (mm) aos 90 dias após a instalação, no mês de julho. O IBA 2.000 ppm propiciou o enraizamento em 88,87% das estacas, contudo não diferiu estatisticamente da testemunha (H2O-61,10%). A melhor época de coleta de estaca para o enraizamento foi o mês de julho (inverno). The effects of indolebutyric, naphtalen acetic and boric acids were studied on rooting of grape rootstock cuttings. The cuttings were 25 cm long with two buds and were taken in three different times (January, April and July). Rooting was carried out in styrofoam trays with vermiculite as substratum and under intermittent mist. Cuttings were imersed up to 2.5 cm from the base in solutions for one minute. The treatments were: 1,000; 2,000 and 5,000 ppm of IBA; 1,500 and 3,000 ppm of NAA; 150 micrograms/ml H3BO3; IBA 1,000; 2,000 and 5,000 ppm plus H3BO(3)150 niicrograins/ml and H2O. Rooting percentage, average number of roots per cutting and average length of roots (mm) were evaluated 90 days after planting, in July. IBA at 2,000 ppm was the best treatment with 88.8% of rooted cuttings. The best time for rooting was July (winter).

Na propagação vegetativa através de estacas caulinares, a época de retirada dos ramos, que serão utilizados na confecção das estacas, tem grande influência sobre seu enraizamento. Outro fator de grande relevância é o tratamento auxínico, realizado nas estacas, que promove a formação de raízes. O presente trabalho teve como objetivo, verificar a ação das auxinas e do boro e a influência da época de coleta dos ramos de cafeeiro, sobre o enraizamento de ramos ortotrópicos semi-lenhosos de café (Coffea arabica L. cv "Mundo Novo"). Para tal, o experimento foi montado mensalmente, realizando-se as seguintes medidas , mediante coleta das estacas, após 90 dias do plantio: número de estacas enraizadas e número total de raízes formadas. À partir dos resultados obtidos, concluiu-se que, a melhor época de coleta dos ramos é na estação chuvosa. Além disso, tratamentos com NAA à 200 ppm mais boro, também promovem uma alta porcentagem de enraizamento. Timing of stem cuttings has large influence on rooting and on vegetative propagation of coffee seedlings. Auxin treatments on cuttings also promote root formation. The present research evaluated auxins and boron actions and the influence time of coffee-tree branch havest time, over rooting of orthotropous semi-hardwood branches of coffee (Coffea arabica L. cv . Mundo Novo) stem cuttings. The trial was performed monthly, observing the cuttings 90 days after planting: number of rooted cuttings and total root number. It was concluded that the best branch harvesting time is in the rainy season, whem cuttings show satisfatory results. Treatments with NAA 200 ppm plus boric acid, promoted higher rooting percentage.