Web consumer behavior : the effect of enjoyment on innovativeness

This research analyzes if the degree of entertainment, enjoyment and involvement with information from a website makes the adoption of innovative purchase behaviors easier. The proposition was that the first consumers in the web portals are consumer innovators, and such innovators will buy new products that are present on this new commerce platform. This study conducted an experiment followed by a questionnaire survey to verify this proposition. Domain specific innovativeness scales (DSI) are used to measure consumers' innovativeness for web commerce. The results suggest that: (1) the degree of entertainment and involvement with the information provided by the website does not change the online shopper's behavior; (2) the degree of website enjoyment can increase innovative purchases behavior

Smartsuit Design

A sociedade contemporânea vive rodeada de artefactos e serviços cada vez mais diversificados. Nesta corrente, o design mergulha na era dos têxteis inteligentes e na incorporação desta tecnologia no desenvolvimento de novos produtos. Se, por um lado, este novo tipo de têxteis pode satisfazer uma necessidade prática, por outro, poderá tornar-se uma expressão de identidade cultural. Esta mudança no têxtil é alcançada através de novos materiais, tecnologias e abordagens multidisciplinares. A introdução de tecnologias de computação em estruturas têxteis oferece uma oportunidade para o desenvolvimento de produtos têxteis com novos comportamentos e funcionalidades. Através do projeto aqui apresentado, pretende-se inovar e desenvolver produtos têxteis inteligentes. Após pesquisa sistemática foi selecionada uma área de intervenção tecnológica – a medida da atividade cardíaca, conjugada com uma atividade desportiva, o ciclismo. Este documento descreve o processo de design e desenvolvimento de um skinsuit para ciclismo, com elétrodos embebidos para a monitorização da frequência cardíaca e desempenho físico – de forma prática e discreta. Os elétrodos foram produzidos e testados, utilizando diferentes materiais e técnicas têxteis. A medição do sinal é feita através do dispositivo BBB - Bluetooth 4.0 (Y8YBH20) e os testes de desempenho foram realizados pelo aplicativo móvel BBB - Bikeboard. Como resultado, foi obtido um skinsuit com design contemporâneo.Contemporary society lives surrounded by increasingly diverse artefacts and services. In this chain, design plunges into the era of smart textiles and the incorporation of this technology in the development of new products. Whilst on one hand, this new type of textiles can satisfy a practical need; on the other hand, it can become an expression of cultural identity. This change in the textile is achieved through new materials, technologies and multidisciplinary approaches. The introduction of computing technologies into textile structures offers an opportunity for the development of textile products with new behaviours and functionalities. Through the project presented here, we intend to innovate and develop smart textile products. After systematic research, an area of technological intervention was selected - the measurement of cardiac activity, coupled with a sporting activity, cycling. This document describes the design and development process of a skinsuit for cycling, with embedded electrodes for monitoring heart rate and physical performance - practically and discreetly. The electrodes were produced and tested using different materials and textile techniques. Through the BBB - Bluetooth 4.0 device (Y8YBH20) signal measurement is done, and the BBB - Bikeboard mobile application was used for performance tests. As a result, a skinsuit with a contemporary design was obtained.Suportado pelo Programa Operacional Regional do Norte, nos termos do Aviso de Abertura de Candidatura n.o NORTE-45-2015-02 – Sistema de Apoio à Investigação Científica e Tecnológica – “Projetos Estruturados de I&D&I”, enquadrado na Unidade de Investigação IPC/i3N. Este livro foi desenvolvido no âmbito do projeto – TSSiPRO - Technologies for Sustainable and Smart Innovative Products, código da operação NORTE-01-0145-FEDER-000015

Influence of Blood Contamination on Bond Strength of a Self-Etching System

OBJECTIVES: To detect the influence of blood contamination (BC) on the bond strength (BS) of a self-etching bonding system (SES) to enamel and dentine. METHODS: 25 human molars were longitudinally sectioned on the mesio-distal axis in order to obtain 50 specimens, which were embedded in acrylic resin. At first, the specimens were ground to expose a flat surface of enamel, and a bond strength test was performed. Afterwards, the samples were ground again in order to obtain a flat surface of dentine. Ten groups (total: n=100) were assigned according to substrate (enamel and dentine), step in the bonding sequence when contamination occurred (before the acidic primer and after the bonding resin), and contamination treatment (dry or rinse and dry procedure). Fresh human blood was introduced either before or after SES application (Clearfil SE Bond) and treated with air drying, or by rinsing and drying following application. Composite resin (Filtek Z-250,3M ESPE) was applied as inverted, truncated cured cones that were debonded in tension. RESULTS: The mean tensile BS values (MPa) for enamel/dentine were 19.4/23.0 and 17.1/10.0 for rinse-and-dry treatment (contamination before and after SES, respectively); while the measurements for the dry treatment, 16.2/23.3 and 0.0/0.0 contamination before and after SES, respectively. CONCLUSIONS: It was determined that blood contamination impaired adhesion to enamel and dentine when it occurred after bond light curing. Among the tested contamination treatments, the rinse-and-dry treatment produced the highest bond strength with BC after SES application, but it was not sufficient to recover the BS in the contamination-free group

Estrutura genética de populações de azevém anual (Lolium multiflorum) estimada por RAPD

Annual ryegrass is a temperate climate annual foraging grass, grown mostly in the South of Brazil, especially in the state of Rio Grande do Sul. Despite its importance, little is known about its genetic diversity, both within and among the populations cultivated. This knowledge is of fundamental importance for developing breeding and conservation strategies. The aim of this study was to characterize the genetic diversity and structure of four populations of annual ryegrass. Three of the populations were located in Rio Grande do Sul and the fourth in Uruguay. RAPD markers were used to study the genetic diversity and structure of these populations. Analysis of 375 individuals sampled from the populations, using six RAPD primers, generated a total of 82 amplified bands. They included 73 polymorphic bands (89,02%). The value of the total genetic diversity index obtained, ;(0,71) was high, indicating the presence of wide genetic diversity in the four populations. Genetic structure analysis revealed that 98% of total diversity is intrapopulational, whereas interpopulational genetic diversity was only 2%. These results suggest that before these populations separated, they had gone through a period of gene exchange and, even after the separation event, gene frequency stayed at levels similar to the original levels, with no differential selection for these genes in the different cultivation areas.O azevém anual é a gramínea anual forrageira de clima temperado de maior utilização no sul do Brasil, particularmente no Estado do Rio Grande do Sul. Apesar de toda a importância que a espécie apresenta, pouco se conhece a respeito da diversidade genética presente entre e dentro das populações cultivadas. Este conhecimento é de fundamental importância para o estabelecimento das estratégias de melhoramento genético e de conservação destes materiais. O objetivo deste estudo foi caracterizar a diversidade genética e a estrutura genética de quatro populações de azevém anual, sendo três populações do Estado do Rio Grande do Sul e uma do Uruguai. O nível de diversidade e a estrutura genética destas populações foram estudados com marcadores RAPD. A análise de 375 indivíduos amostrados nas populações, com seis iniciadores, gerou um total de 82 bandas que foram utilizados nas análises, dentre as quais 73 (89,02%) foram polimórficas. O valor do índice de diversidade genética total obtido, ;(0,71) foi elevado evidenciando a presença de uma grande diversidade genética nas quatro populações. A análise da estrutura genética revelou que 98% da diversidade total esta contida dentro das populações, enquanto que a diversidade genética entre as populações representou somente 2%. Sugere-se que antes da separação destas populações, as mesmas tenham passado por um período de troca de genes e que mesmo após o evento de separação elas mantiveram a freqüência destes em níveis semelhantes aos originais, não tendo ocorrido uma seleção diferencial destes genes nos locais de cultivo

Determination of the chemical composition of Eucalyptus spp. For cellulosic pulp production

Funding Information: Funding: This research was partially supported by CAPES (Coordination for the Development of Higher Level Personnel). This work was also partially supported by Base Funding—UIDB/EQU/ 50020/2020 and Programmatic-UIDP/50020/2020 Funding of the Associate Laboratory LSRE-LCM— and UIDB/00511/2020 of the Laboratory for Process Engineering, Environment, Biotechnology and Energy, LEPABE—funded by national funds through FCT/MCTES (PIDDAC). This work was also supported by national funds through FCT, under the Scientific Employment Stimulus Institutional Call (CEECINST/00102/2018) and partially supported by the Associate Laboratory for Green Chemistry—LAQV, financed by national funds from FCT/MCTES (UIDB/50006/2020 and UIDP/50006/2020) and IF/01381/2013/CP1160/CT0007, Investigador FCT program, with financing from the European Social Fund and the Human Potential Operational Program. T.A.S.V. is grateful to the Erasmus Mundus program.The chemical composition of wood is important to assess the quality of this raw material for the industry of cellulosic pulp production. The purpose of this work was to determine the chemical composition of Eucalyptus spp. grown for cellulosic pulp production. Ten Eucalyptus spp. clones with six years of age, located in the municipality of Itamarandiba, Minas Gerais, Brazil, were used. Quantification was obtained for extractives, monosaccharides, uronic acids, acetates, lignin, ash and the phenolic composition of the extracts. In average, clones showed around 2.7% extractives, with a predominance of polar compounds soluble in ethanol and water; 27.7% lignin and 0.3% ash. Glucose was the main sugar detected (64.2%), followed by xylose (19.3%). The main components of the extractives were steroids, fatty acids and aromatic acids, followed by smaller amounts of substituted alkanoic acids, fatty alcohols, glycerol derivatives and triterpenes. The ethanol–water extracts presented total phenol contents ranging from 321.4 to 586.6 mg EAG/g of extract, tannins from 28.1 to 65.1 mg catechin/g of extract and flavonoids from 73.6 to 256.9 mg catechin/g of extract. Clones with a higher holocellulose amount and a lower lignin content showed a higher potential for cellulosic pulp production. These findings are important for the development of high-quality wood based on important traits for the pulp and paper sector.publishersversionpublishe

Evaluating the psychometric properties of the iconographical falls efficacy scale (ICON-FES)

OBJECTIVE: This study aims to analyze the construct and content validity of the Iconographical Falls Efficacy Scale (Icon-FES) in order to measure the fear of falling in community-dwelling older adults. METHODS: The Icon-FES was applied to 333 older adults. An exploratory factor analysis was performed to assess internal consistency. Item response theory (IRT) and confirmatory factor analysis (CFA) were used to evaluate the consistency of the questionnaire and whether it corresponded satisfactorily to the construct ‘‘concern about falling.’’ Concurrent validity with the Falls Efficacy Scale-International (FES-I) and convergent validity with the Senior Fitness Test (SFT) were also assessed. Receiving operator characteristic (ROC) curves were used to determine the sensitivity and specificity. RESULTS: The structural model of the 30-item and 10-item Icon-FES showed some theoretical fragility. The final model of the new short version of the Icon-FES consisted of 13 items, yielding a theoretically satisfactory structural model. Validity analyses indicated that the 13-item Icon-FES had a moderate relationship with the SFT, a strong relationship with the FES-I, and good sensitivity and specificity for a history of falls. CONCLUSION: The 13-item Icon-FES has excellent psychometric properties for measuring fear of falling in community-dwelling older adults. It can be recommended as a screening tool for fear of falling for both research and clinical purposes

Indicações geográficas como propulsoras do turismo nos Vales da Uva Goethe, Santa Catarina

Considerando a crescente relevância do papel estratégico das indicações geográficas para o turismo e sua contribuição para o desenvolvimento territorial, este artigo teve como objetivo investigar a percepção do potencial da Indicação Geográfica (IG) sob a ótica do conjunto de atores ligados à classificação dos Vales da Uva Goethe, Santa Catarina, Brasil e sua contribuição para a impulsão do turismo. Trata-se de uma pesquisa qualitativa, com a realização de 17 entrevistas. Os resultados obtidos foram examinados utilizando-se de análise de conteúdo temática IG como propulsora do desenvolvimento territorial; interação entre os atores locais; e perspectivas atuais e futuras da IG e do turismo. Dentre os principais resultados, destacaram-se a urgência do alinhamento de interesses entre os atores do território investigado, visto ter sido identificado o interesse crescente pela atividade de enoturismo e o fortalecimento da identidade local. Como resultado central, destacaram-se elementos como a dinâmica local da Indicação de Procedência Vales da Uva Goethe

ANÁLISE ESTRUTURAL E TEMPORAL DA VEGETAÇÃO ARBÓREA DE MATA DE GALERIA NO JARDIM BOTÂNICO DE BRASÍLIA DF

A comunidade arbórea da mata de galeria do córrego Cabeça-de-Veado (MCV), no Jardim Botânico de Brasí­lia-DF, possui um alto í­ndice de diversidade comparado a outras matas do Brasil Central. A partir da análise de classificação, foi possí­vel verificar três comunidades florí­sticas ao longo do gradiente de saturação hí­drica do solo: comunidade seca, comunidade úmida e comunidade inundável. Foram avaliados os parâmetros fitossociológicos e a dinâmica da comunidade total e das comunidades preferenciais classificadas. A riqueza de 174 espécies, o í­ndice de diversidade de Shannon (H') 4,49 nats/ind. e o í­ndice de equabilidade de Pielou (J') 0,87 encontrados para esta mata ocorrem tanto pelo seu bom estado de preservação, quanto pela variação ambiental existente em seu interior. A dinâmica da comunidade total na MCV apresentou taxas medianas comparadas a outros estudos. Entre os três ambientes a comunidade inundável apresentou dinâmica mais intensa, seguida pela comunidade úmida e a dinâmica menos intensa na comunidade seca