8 documents found, page 1 of 1
Zein impart hydrophobic and antimicrobial properties to cotton textiles
Gonçalves, J. A.; Torres, Natália; Silva, Sónia Carina; Gonçalves, Filipa; Noro, Jennifer Martins; Cavaco-Paulo, Artur; Ribeiro, Artur; Silva, C.In this work, zein, a by-product of the agricultural industry of corn, was used to impart hydrophobicity and antimicrobial activity to textiles. The cotton textiles were functionalized with zein in two different forms, free or as particles. The optimized coating conditions which rendered the highest hydrophobic character to the textiles were found to be 50g/L zein in the free form prepared with 70% ethanol. To ...
Crystallin fusion proteins improve the thermal properties of hair
Tinoco, Ana; Gonçalves, J. A.; Silva, Carla; Cavaco-Paulo, Artur; Ribeiro, ArturStyling hair with straightening irons is a popular daily hair routine that significantly damage the hair keratin fiber due to the high temperature applied. In this study, we investigate the effect of two fusion proteins based on the human eye D-crystallin conjugated with a keratin-based peptide (KP-Cryst Wt and KP-Cryst Mut) on hair exposed to thermal damage. The mutant form was designed to improve protein stab...
Keratin-based particles for protection and restoration of hair properties
Tinoco, Ana Catarina; Gonçalves, J. A.; Silva, Carla; Loureiro, Ana; Gomes, Andreia C; Cavaco-Paulo, Artur; Ribeiro, ArturObjective Human hair is an element with unquestionable relevance in society both for women and men. Therefore, it is of great importance to develop new cosmetic products for hair care capable to restore and improve hair's characteristics. Here we explore the potential of keratinbased particles in the protection and recovery of hair mechanical properties and thermal stability. Methods Keratinbased particles were...
Assessing coastal erosion risk in a GIS environment
Bio, A.; Gonçalves, J. A.; Santos, M. Arcos; Granja, Helena Maria; Pinho, José L. S.; Bastos, L.Coasts are complex and dynamic zones, susceptible to natural and man-made risk factors and hazards. Impacts will depend on meteo-oceanic conditions (e.g. wave and storm patterns), vulnerability (related with sediments and morphology) and exposure (which depends on coastal orientation and on natural or man-made protective structures). Consequently, even neighbouring beach sectors may show contrasting behaviour b...
Methods for coastal monitoring and erosion risk assessment: two Portuguese case...
Bio, A.; Bastos, L.; Granja, Helena Maria; Pinho, José L. S.; Gonçalves, J. A.; Henriques, Renato F.; Madeira, S.; Magalhães, A.; Rodrigues, D.Coastal zones are naturally dynamic and mobile systems exposed to natural (river flows, waves and storms) as well as human interventions that continuously reshape their morphology. Erosion phenomena related to extreme weather events and sediment scarcity are common, threatening buildings and infrastructures, as well as beaches, ecosystems and valuable wetland; conditions that pose challenges to coastal security...
Enquadramento cartográfico do Complexo de Granja (NW Ceará, Brasil) e avaliação...
Silva, A. J. F.; Teodoro, A. C.; Duarte, L.; Azevedo, M. R.; Valle Aguado, B.; Nogueira Neto, J. A.; Gonçalves, J. A.Este estudo destaca os benefícios da análise metódica da cartografia de base que suporta a produção de Cartografia Geológica. Em certas regiões, as cartas base publicadas estão ainda associadas a redes geodésicas clássicas e, com frequência, são introduzidos erros quando se desconsideram parâmetros essenciais como a Projecção Cartográfica e o Datum Geodésico. Com o uso sistemático dos dispositivos de GPS e dos ...
Um caso de linfoma de Burkitt no adulto
Firmino, C.; Raposo, J. Mena; Gonçalves, J. A..
Hydrogeological study of a high mountain area (Serra da Estrela, Central Portug...
Marques, J.; Espinha Marques, J. M.; Chaminé, H. I.; Afonso, M. J.; Carreira, P. M.; Fonseca, P. E.; Cabral, J.; Santos, F. A. Monteiro; Vieira, GoncaloThe results ofa preliminary hydrogeological study ofthe river Zêzere catchment upstream ofManteigas(Serra da Estrela Natural Park,Central Portugal) are presented.In this mountain region,different types of groundwater and surface water (used in several economic activities) occur.The methodology adopted in thisstudy emphasizes the way how Geology,Geomorphology,Geophysics,Geochemistry,Soil Science andHydrogeology ...