48 documents found, page 1 of 5
Do investors tend to overreact when investing in clean energy stock indices?
Dias, Rui; Galvão, Rosa; Cruz, Sandra; Gonçalves, Sidalina; Irfan, Mohammad; Teixeira, Nuno; Alexandre, Paulo; Palma, Cristina; Almeida, LilianaDue to climate change, investors are increasingly interested in clean energy stocks attracting many investors due to clean energy prospects. This paper analyses investor overreactions to long-term prices in various clean energy stock indices, such as Clean Energy Fuels (CLNE), Global Clean Energy (GCEI), as well as the Dow Jones Industrials (DJI) stock index, over the period from 24 February 2022 to 23 May 2024...
Customisation of PVD coatings for biomedical devices
Santo, Daniela; Castro, José D.; Cruz, Sandra; Carvalho, Isabel; Cavaleiro, Albano; Carvalho, SandraIn recent years, physical vapor deposition (PVD) has emerged as a powerful technique for surface modification, offering a wide range of possibilities to improve the properties of medical devices. This review explores the fundamentals and versatility of PVD coatings in biomedical applications, highlighting their potential to revolutionise the field. Biocompatibility is crucial in successfully integrating medical...
Exploring the relationship between clean energy indices and oil prices: a ten-d...
Dias, Rui; Galvão, Rosa; Cruz, Sandra; Irfan, Mohammad; Teixeira, Nuno; Gonçalves, SidalinaThis paper aims to assess the comovements between clean energy indices, namely the Clean Energy Fuels (CLNE), Nasdaq Clean Edge Green Energy (CELS), S&P Global Clean Energy (SPGTCLEN), TISDALE Clean Energy (TCEC.CN), Wilderhill (ECO), West Texas Intermediate (WTI) stock indices, over the period from 1 January 2018 to 23 November 2023. We used 10-day windows to analyse the duration and nature of the shocks. Gran...
1-Metilciclopropene and lemongrass essential oil nanocoatings effects on the pr...
Gago, Custódia; Guerreiro, Adriana; Cruz, Sandra; Martins, Nuno; Cabrita, Maria João; Miguel, Maria; Faleiro, Maria; Antunes, MariaThe effects of coating ‘Rocha’ pear with alginate-based nanoemulsions enriched with lemongrass essential oil (LG) was evaluated and compared to the usual 1-MCP treatment. Fruit were treated with 1-MCP (312 nL L−1) or coated with nanoemulsions: sodium alginate 2 % (w/w) + lemongrass essential oil 1.25 % (w/w) (LG 1.25 %) or lemongrass essential oil 2.5 % (w/w) (LG 2.5 %). Then, fruit were stored at 0 °C and 90–9...
Sensory evaluation and spectra evolution of two kiwifruit cultivars during cold...
Afonso, Andreia M.; Guerra, Rui; Cruz, Sandra; Antunes, Maria D.Kiwifruit consumption has increased due to its rich nutritional properties. Although ‘Hayward’ continues to be the main cultivar, others, such as yellow fleshed ‘Jintao’, are of increasing interest. The objective of this research was to evaluate the acceptability and storage performance of these two cultivars. Sensory evaluation of green ‘Hayward’ and yellow ‘Jintao’ kiwifruit were performed along cold storage ...
Triboelectrochemical friction control of W- and Ag-doped DLC coatings in water-...
Khanmohammadi, Hamid; Wijanarko, Wahyu; Cruz, Sandra; Evaristo, Manuel; Espallargas, NuriaIn the last years, diamond like carbon (DLC) coatings doped with both carbide forming and non-carbide forming metallic elements have attracted great interest as novel self-lubricating coatings. Due to the inherent properties of DLC, the doping process can provide adsorption sites for lubricant additives depending on the chemical and electrochemical state of the surface. Ionic liquids (ILs) are potential lubrica...
1-Methylcyclopropene and lemongrass essential oil nanocoatings effect on the pr...
Gago, Custódia; Guerreiro, Adriana; Cruz, Sandra; Martins, Nuno; Cabrita, Maria João; Miguel, Maria Graça; Faleiro, Maria Leonar; Antunes, Maria DulceThe effects of coating ‘Rocha’ pear with alginate-based nanoemulsions enriched with lemongrass essential oil (LG) was evaluated and compared to the usual 1-MCP treatment. Fruit were treated with 1-MCP (312 nL L−1) or coated with nanoemulsions: sodium alginate 2 % (w/w) + lemongrass essential oil 1.25 % (w/w) (LG 1.25 %) or lemongrass essential oil 2.5 % (w/w) (LG 2.5 %). Then, fruit were stored at 0 °C and 90–9...
Ripening assessment of ‘Ortanique’ (Citrus reticulata Blanco x Citrus sinensis ...
Pires, Rosa; Guerra, Rui Manuel Farinha das Neves; Cruz, Sandra; Antunes, MDC; Brazio, António; Afonso, Andreia M.; Daniel, MarianaThe aim of this study was the non-destructive assessment of ‘Ortanique’ (Citrus reticulata Blanco x Citrus sinensis (L) Osbeck) ripening, based on the prediction of internal quality attributes (IQA) by short-wave near-infrared reflectance spectroscopy (SW-NIRS) calibration models. Spectra from fruit of 50 trees located in two different orchards, were acquired on tree using a customized portable visible near-inf...
1-Methylcyclopropene and lemongrass essential oil nanocoatings effect on the pr...
Gago, Custódia; Guerreiro, Adriana; Cruz, Sandra; Martins, Nuno; Cabrita, Maria João; Miguel, Maria; Faleiro, Maria Leonor; Antunes, Maria DulceThe effects of coating 'Rocha' pear with alginate-based nanoemulsions enriched with lemongrass essential oil (LG) was evaluated and compared to the usual 1-MCP treatment. Fruit were treated with 1-MCP (312 nL L-1) or coated with nanoemulsions: sodium alginate 2 % (w/w) + lemongrass essential oil 1.25 % (w/w) (LG 1.25 %) or lemongrass essential oil 2.5 % (w/w) (LG 2.5 %). Then, fruit were stored at 0 degrees C a...
Sustainable entrepreneurship: a literature review
Rosário, Albérico Travassos; Raimundos, Ricardo Jorge; Cruz, SandraThese days, issues such as environmental degradation, the wealth gap, and unequal access to opportunities and resources are increasing. These concerns have increased the need for sustainable entrepreneurship, defined as sustainable business practices. Entrepreneurship is central in transitioning towards a more sustainable future, whereas aligning the social, economic, and ecological objectives and ecological en...