Lidando com a lacuna: o papel moderador da educação na relação entre a perceção subjetiva da saúde e da vida social e o tempo de utilização da Internet

Introduction: Internet addiction results in intense and frequent use. There is a gap in the literature in relation to the unawareness of problematic Internet use (PIU) in predicting Internet use time (IUT). Objective: To identify sociodemographic/psychological variables contri-buting and moderating IUT. Participants: 1,270 participants of the European Social Survey (EES), Round 8. Instruments: EES variables assessing Internet use (IU), health perception, well-being, social life, and sociodemographic variables, underlying the construct. Results: Age, education, sources of household income, social activities compared to others of the same age and subjective general health explain IU per day; and age, years of education, domicile and socially meeting with other people with whom to discuss intimate matters explain IU per week. Education was found to be a significant moderator in the relationship between subjective general health and IU per week; and in the relationship between socially meeting with other people and IU per day. Discussion: Maladaptive IU, when the perception of health is worse, and adaptive IU, when the perception of social life is better, are both suggested, depending on education. Conclusions: These findings point to the need to study IUT involving educational level, keeping in mind that what may be PIU at one educational level may not be the case at another.Introdução: O vício da Internet traduz-se numa utilização intensa e frequente. Existe uma lacuna na literatura sobre o desconhecimento dos preditores do uso problemático da Internet (PIU) do tempo de utilização da Internet (IUT). Objetivo: Identificar as variáveis sociodemográficas/psicológicas que contribuem e moderam o IUT. Participantes: 1270 participantes da European Social Survey (EES), Round 8. Instrumentos: Variáveis ESS que avaliam a utilização da Internet (IU), perceção de saúde, bem-estar, vida social e variáveis sociodemográficas, subjacentes ao construto. Resultados: Idade, escolaridade, fontes de renda familiar, atividades sociais em comparação com outras da mesma idade e saúde geral subjetiva explicam IU por dia e idade, anos de escolaridade, domicílio, convívio social com outras pessoas e quem para discutir assuntos íntimos explicam IU por semana. A escolaridade mostrou-se um moderador significativo na relação entre saúde geral subjetiva e IU por semana; e na relação entre encontro social com outras pessoas e IU por dia. Discussão: IU desadaptativa, quando a perceção de saúde é pior, e IU adaptativa, quando a perceção de vida social é melhor, dependem da escolaridade. Conclusões: Os resultados sugerem o estudo do IUT de acordo com o nível educacional, pois o que pode ser um PIU num nível educacional pode não ser noutro.info:eu-repo/semantics/publishedVersio

Cantos de anúncio de espécies do grupo de Hyla albosignata (Amphibia, Anura, Hylidae)

We describe and compare the spectral and temporal characteristics of the advertisement calls of six species of the Hyla albosignata group (H. albosignata, H. callipygia, H. cavicola, H. ibirapitanga, H. leucopygia, and H. sibilata), and relate the ecological and morphological relationships among these species based on the phenetic analysis resulted from the acoustic parameters. Advertisement calls of species of the H. albosignata species group are quite similar, each consisting of one repeated note containing harmonic structure. Duration of calls range from about 0.1s (H. sibilata) to 0.5s (H. cavicola) and are repeated at different rates, from three calls per second (H. sibilata) to one call for each three seconds (H. callipygia). The main difference among the advertisement calls is related to their spectral properties. The arrangement of the phenetic tree does not corroborate the division proposed in the literature based on morphological differences of the cloacal region, nor is related to species body size. Sympatric species with similar calls are not syntopic, and syntopic species show more differentiated calls.Descrevemos e comparamos as características espectrais e temporais dos cantos de anúncio de seis espécies do grupo de Hyla albosignata (H. albosignata, H. callipygia, H. cavicola, H. ibirapitanga, H. leucopygia e H. sibilata) e confrontamos as relações ecológicas e morfológicas entre essas espécies baseadas em análise fenética resultante dos parâmetros acústicos. Os cantos de anúncio das espécies do grupo de Hyla albosignata são bastante semelhantes, cada um consistindo de uma nota com estrutura harmônica, emitida repetidamente. A duração dos cantos variou entre 0,1s (H. sibilata) e 0,5s (H. cavicola) e são repetidos em taxas diferentes, desde três cantos por segundo (H. sibilata) até um canto a cada três segundos (H. callipygia). A principal diferença entre os cantos de anúncio é relacionada às suas propriedades espectrais. O arranjo da árvore fenética não corrobora a divisão proposta em literatura baseada em diferenças morfológicas na região cloacal, nem está relacionada ao tamanho corporal das espécies. Espécies simpátricas de cantos similares não são sintópicas, enquanto espécies sintópicas apresentam cantos mais diferenciados

Online platform for home design and project management in modular construction

The construction industry is currently facing the challenges of intensifying global competition, increasing market volatility, increasing product differentiation, and shortening product life cycles. In this context, versatile production concepts with modular structures promise a better adaptation to these dynamic boundary conditions in terms of quantity production, product variety, and manufacturing location. Modular construction has significant advantages over traditional on-site construction in terms of material efficiency, safety, and sustainability. Therefore, specialized software for building design is one of the critical aspects of modular construction. This work presents the development of an online platform for the design of buildings using modular construction. The main features of this platform are the 2D home design with 3D visualization, using BIM approaches, the validation of architectural rules and system limits taking into consideration the design and legal framework, and the management of orders and workflows for sustainable construction. The validation of architecture rules and system limits allows the use of the platform by final clients to design their houses and obtain the budget and the construction viability based on modular construction. After, an architect can assume the final design and legal approvement of the project.This work was supported by FCT - Fundação para a Ciência e a Tecnologia under Projects UIDB/05757/2020, funded by Ministério da Ciência, Tecnologia e Ensino Superior and Fundo Social Europeu through The Programa Operacional Regional Norte and NORTE-01-0247-FEDER-113482, funded by Compete 2020.info:eu-repo/semantics/publishedVersio

Sensoriamento remoto aplicado na detecção de áreas degradadas pela mineração no sul do Brasil entre 1985-2011

A análise multitemporal de imagens de satélite foi aplicada a uma antiga mina abandonada localizada em Minas do Camaquã, no sul do Brasil, entre latitude e longitude -30.908591, -53.446582; para verificar a relação entre área degradada durante o funcionamento da mina e a área de recuperação da vegetação após anos de sua desativação. Uma série temporal de imagens do satélite Landsat foi classificada pelo índice NDVI (normalized difference vegetation index) para produzir três mapas de uso da região. A partir das comparações entre os referidos mapas e as áreas sem cobertura vegetal, foi possível quantificar a modificação em cada porção da paisagem, identificando-se a evolução das mudanças na área de vegetação natural. Verificou-se que no período 1985 -1996 a degradação aumentou em 8 %, ou 47,43 ha. Em contrapartida, em 2011 (o último ano analisado) observou-se que a cobertura vegetal foi superior ao primeiro período analisado, ou seja, ocorreu uma recuperação da vegetação de 26% ou 113,22 ha em relação a 1985

Effect of bleaching agents on enamel surface of bovine teeth: a SEM study

This study aimed to evaluate changes in the enamel surface of bovine teeth after whitening with exogenous bleaching agents: 10% carbamide peroxide (group 1), 16% carbamide peroxide (group 2) and 35% hydrogen peroxide activated by a light-emitting diode (LED) (group 3). The evaluations were performed by scanning electron microscopy (SEM). Ninety bovine teeth were divided into five groups (n = 18). The bleaching agents 10% and 16% carbamide peroxide were applied for eight hours a day for 14 consecutive days. The third agent, LED-activated 35% hydrogen peroxide, was used four times at seven-day intervals. Each of the four time points consisted of three applications of 10 minutes each. A 37% phosphoric acid solution and artificial saliva were used as positive and negative controls, respectively. The evaluations by SEM showed changes in the enamel surfaces of the specimens. Based on the Mann-Whitney statistical test, the data showed significant differences (p0.05) was observed between groups 1 and 3. Based on these results, it can be concluded that bleaching agents can cause changes in the structure of tooth enamel and that these changes are related to the concentration and the duration of contact with the tooth surface

Eco-friendly ZnO/chitosan bionanocomposites films for packaging of fresh poultry meat

UID/EMS/04077/2019 UID/QUI/50006/2019 UID/QUI/00100/2019 Contrato No: IST-ID/154/2018) under Decree-Law No. 57/2016 and 57/2017.The advances on the development of novel materials capable to enhance the shelf life of food products may contribute to reduce the current worldwide food waste problem. Zinc oxide nanoparticles (ZnO NPs) are considered GRAS (Generally Recognized as Safe) by the Food and Drug Administration (FDA) and due to their good antimicrobial properties are suitable to be applied as active compounds in food packaging. ZnO NPs were synthesized to be tested in active bionanocomposites through an eco-friendlier route using apple peel wastes. This work aimed to develop bionanocomposites based on chitosan and incorporated with ZnO NPs to characterize its bioactivity via in vitro and in situ studies, using fresh poultry meat as the food matrix. Overall, bio-based biodegradable films presented good antimicrobial activity, being the intrinsic antimicrobial properties of chitosan enhanced by the ZnO NPs added on the system. When used as primary packaging of the meat, the samples protected with the films presented a decrease on the deterioration speed, which was represented by the preservation of the initial reddish color of the meat and reduction on the oxidation process and microbiological growth. The nanoparticles enhanced especially the antioxidant properties of the films and proved to be potential food preservatives agents to be used in active food packaging.publishersversionpublishe

Comparative study on optical performance and visual outcomes between two diffractive multifocal lenses: AMO Tecnis® ZMB00 and AcrySof® IQ ReSTOR® Multifocal IOL SN6AD1

ABSTRACT Purpose: To compare the optical performance and visual outcomes between two diffractive multifocal lenses: AMO Tecnis® ZMB00 and AcrySof® ReSTOR® SN6AD1. Methods: This prospective, non-randomized comparative study included the assessment of 74 eyes in 37 patients referred for cataract surgery and candidates for multifocal intraocular lens implants. Exclusion criteria included existence of any other eye disease, previous eye surgery, high axial myopia, preoperative corneal astigmatism of >1.00 cylindrical diopter (D), and intraoperative or postoperative complications. Ophthalmological evaluation included the measurement of uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), distance-corrected near visual acuity (DCNVA), and distance-corrected intermediate visual acuity (DCIVA), with analysis of contrast sensitivity (CS), wavefront, and visual defocus curve. Results: Postoperative UDVA was 0.09 and 0.08 logMAR in the SN6AD1 and ZMB00 groups, respectively (p=0.868); postoperative CDVA was 0.04 and 0.02 logMAR in the SN6AD1 and ZMB00 groups, respectively (p=0.68); DCIVA was 0.17 and 0.54 logMAR in the SN6AD1 and ZMB00 groups, respectively (p=0.000); and DCNVA was 0.04 and 0.09 logMAR in the SN6AD1 and ZMB00 groups, respectively (p=0.001). In both cases, there was an improvement in the spherical equivalent and UDVA (p<0.05). Under photopic conditions, the SN6AD1 group had better CS at low frequencies without glare (p=0.04); however, the ZMB00 group achieved better sensitivity at high frequencies with glare (p=0.003). The SN6AD1 and ZMB00 lenses exhibited similar behavior for intermediate vision, according to the defocus curve; however, the ZMB00 group showed a shorter reading distance than the SN6AD1 group. There were no significant differences regarding aberrometry between the two groups. Conclusion: Both lenses promoted better quality of vision for both long and short distances and exhibited a similar behavior for intermediate vision. The SN6AD1 and ZMB00 groups showed better results for CS under photopic conditions at low and high spatial frequencies, respectively

The GO-DACT protocol : a multicentre, randomized, double-blind, parallel-group study to compare the efficacy of golimumab in combination with methotrexate (MTX) versus MTX monotherapy

© 2001-2020 Sociedade Portuguesa de ReumatologiaThe GO-DACT is an investigator-initiated, national, multicentric randomized placebo-controlled double-blinded trial, that assesses dactylitis as primary endpoint. Psoriatic arthritis patients naïve to methotrexate and biologic disease modifying anti-rheumatic drugs, with at least one active dactylitis, were assigned to golimumab in combination with methotrexate or placebo in combination with methotrexate, for 24 weeks. Both clinical (dactylitis severity score and the Leeds dactylitis index) and imaging (high resolution magnetic resonance imaging), among others, were assessed as outcomes. The main objective of GO-DACT is to provide evidence to improve the treatment algorithm and care of psoriatic arthritis patients with active dactylitis. In this manuscript we describe the GO-DACT protocol and general concepts of the methodology of this trial.info:eu-repo/semantics/publishedVersio