Helena Vargas

Darker eggs of mosquitoes resist more to dry conditions: Melanin enhances serosal cuticle contribution in egg resistance to desiccation in Aedes, Anopheles and Culex vectors

Luana Cristina Farnesi, Helena Vargas, Denise Valle et al. · PLoS neglected tropical diseases · 2017 · 122 citations · Full text

Life Sciences, Biology, Entomology +17

Serosal cuticle formation and distinct degrees of desiccation resistance in embryos of the mosquito vectors Aedes aegypti, Anopheles aquasalis and Culex quinquefasciatus

Helena Vargas, Luana Cristina Farnesi, Ademir Jesus Martins et al. · Journal of Insect Physiology · 2014 · 115 citations · Full text

Life Sciences, Biology, Entomology +15

Enlightening the influence of mordant, dyeing technique and photodegradation on the colour hue of textiles dyed with madder – A chromatographic and spectrometric approach

Ana Manhita, Vanda Ferreira, Helena Vargas et al. · Microchemical Journal · 2010 · 60 citations

Agriculture, Chemistry, Color Theory +11

Ageing of brazilwood dye in wool – a chromatographic and spectrometric study

Ana Manhita, V.G. Santos, Helena Vargas et al. · Journal of Cultural Heritage · 2012 · 20 citations

Agriculture, Forestry, Elemental Analysis +11

Characterization of glue sizing under calcium carbonate ground layers in Flemish and Luso-Flemish painting – analysis by SEM-EDS, μ-XRD and μ-Raman spectroscopy

Vanessa Antunes, Maria José Oliveira, Helena Vargas et al. · Analytical Methods · 2013 · 16 citations

Natural Sciences, Materials Engineering, Materials Science +12