17 documents found, page 1 of 2

How COVID-19 affected Portuguese travel intentions—A PLS-SEM model

COVID-19 was a defining moment of the 21st century, causing major disruptions to tourism and global mobility. Travel patterns have changed significantly, influencing people’s perception of travel. This study aims to explore how COVID-19 affected the travel intentions of the Portuguese. The research is based on a questionnaire administered to 762 individuals, using structural equation modeling with partial least...

Determinants of corporate indebtedness in Portugal: An analysis of financial be...

Corporate indebtedness is a powerful tool in determining a company’s financial health with impacts on its image and reputation. The main objective of this research is to study the determining factors in corporate indebtedness in Portugal. It also has the secondary objectives of creating clusters of companies’ behaviour in relation to the use of credit and verifying their differences in relation to the character...

New national and regional bryophyte records, 77

Effect of the as-built microstructure on the martensite to austenite transforma...

Made available in DSpace on 2022-04-28T19:41:08Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-10-01; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Nuclear Fuel Cycle and Supply Chain; During laser-based powder bed fusion, the non-equilibrium solidification conditions promote local elemental segregation, leading to a characteristic microstructure composed of cellular walls. These...

Variability of gauge-wheel loads resulting from a hydraulic downforce system an...

Made available in DSpace on 2022-04-28T19:44:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; The quality and efficiency of agricultural operations is a function of how the machinery and implements are performing. Current hydraulic downforce systems on the market could work using two operational modes, static and dynamic. Both, if not set properly can reduce the quality of crop planting. This wo...

Does the applied gauge-wheel loads have influence on seeding depth and soil str...

Made available in DSpace on 2022-04-28T19:44:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; The inadequate use of farming machinery could have negative impacts on soil structure and crop growth. During planting, a row-unit downforce system is used to reach and maintain a target seeding depth by applying downward forces to the planter’s gauge-wheels. These forces are transferred to the soil and...

Antimicrobial activity of an l-amino acid oxidase isolated from bothrops leucur...

Made available in DSpace on 2022-04-28T21:39:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-01-01; Some snake venom proteins present enzymatic activities, such as L-amino acid oxidase (LAAO). The aim of this paper was to investigate the effect of Bothrops leucurus total venom (BleuTV) and its fraction LAAO (BleuLAAO) on bacteria, yeast, and promastigote forms of Leishmania amazonensis and Leishmania ...

A tecnologia como facilitador no processo ensino-aprendizagem da Matemática

As experiências que o ser humano vivencia em sociedade ao longo da sua vida desempenham um papel muito importante na construção do seu conhecimento. A aprendizagem é, portanto, uma atividade socialmente mediada por diferentes intervenientes, entre os quais se destacam, os professores, os colegas de turma e o uso de tecnologias. Deste modo, pretende-se averiguar se o uso do software GeoGebra é um elemento facili...

Effect of MAG welding transfer mode on sigma phase precipitation and corrosion ...

Made available in DSpace on 2021-06-25T11:06:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-01; The effect of multi-pass MAG welding transfer modes on the sigma phase precipitation and corrosion performance of AISI 316L thick plate were investigated. The evolution of the microstructure was examined by optical and electron microscopy as well as ferritscope measurements and energy dispersive X-ray s...

The Importance of E-Commerce and Customer Relationships in Times of COVID-19 Pa...

A digital transformation in the world, the purchase of products, or possible services, is just a click away through e-commerce. The online consumer is increasingly knowledgeable and demanding. That’s why in online shopping it is important to maintain the good relationship between the company and the customer. This investigation aims to study the importance of the e-commerce in the context of a COVID-19 pandemic...