Hernández Salueña, Begoña
Loading...
Email Address
person.page.identifierURI
Birth Date
Job Title
Last Name
Hernández Salueña
First Name
Begoña
person.page.departamento
Ciencias
person.page.instituteName
InaMat2. Instituto de Investigación en Materiales Avanzados y Matemáticas
ORCID
person.page.observainves
person.page.upna
Name
- Publications
- item.page.relationships.isAdvisorOfPublication
- item.page.relationships.isAdvisorTFEOfPublication
- item.page.relationships.isAuthorMDOfPublication
3 results
Search Results
Now showing 1 - 3 of 3
Publication Embargo CIELAB color paths during meat shelf life(Elsevier, 2019) Hernández Salueña, Begoña; Sáenz Gamasa, Carlos; Diñeiro Rubial, José Manuel; Alberdi Odriozola, Coro; Zientziak; Institute for Advanced Materials and Mathematics - INAMAT2; CienciasMeat color evolution from freshly cut to beyond shelf life, up to 40% of metmyoglobin, has been theoretically modeled using the Kubelka-Munk theory and a set of measured reference reflectance spectra of deoxymyoglobin, oxymyoglobin and metmyoglobin. Color evolution depicts characteristic color paths in CIELAB color space. During oxidation the model explains the approximately constancy of L*, b* and hab, with variations typically hidden by sample dispersion, and the special significance of a* and C* in relation with metmyoglobin formation. CIELAB ΔE* color difference and the reflectance ratio R630/R580 are even better indicators of metmyoglobin changes during oxidation. The role of a*, C*, ΔE* and R630/R580 and their relationship during oxidation is a normal feature in the model with quantitative predictions in general agreement with literature. Results further emphasize the dangers of reporting color coordinates in different illuminants.Publication Open Access Evaluation of two procedures for selecting the CIE standard sky type using high dynamic range images(International Solar Energy Society, 2019) García Ruiz, Ignacio; Blas Corral, María Ángeles de; Torres Escribano, José Luis; Hernández Salueña, Begoña; Sáenz Gamasa, Carlos; Ormazábal Pagola, Mikel; Ingeniería; Ingeniaritza; Ciencias; Zientziak; Gobierno de Navarra / Nafarroako GobernuaThe characterization of sky conditions according to the CIE Standard General Sky classification requires knowledge of diffuse luminance angular distribution in the sky vault. This variable is usually measured by sky scanners. However, commercial sky scanners have different drawbacks related to their resolution and measurement time. An alternative to these devices is the use of sky images captured with a digital camera equipped with a fisheye lens. The range of luminances that may occur in the sky makes it necessary to use high dynamic range (HDR) images obtained by the fusion of a series of low dynamic range (LDR) images. Two procedures for the characterization of sky conditions according to the CIE standard using HDR images have been applied and evaluated.Publication Embargo Negative reflection, negative refraction and ray displacements in biaxial absorbing media, In4Se3(Taylor & Francis, 2019) Alberdi Odriozola, Coro; Diñeiro Rubial, José Manuel; Hernández Salueña, Begoña; Sáenz Gamasa, Carlos; Zientziak; Institute for Advanced Materials and Mathematics - INAMAT2; CienciasWe show the existence of negative reflection and negative refraction in a slab of biaxial absorbing medium In 4Se3 placed between two isotropic media. We find the limiting angle of incidence in the slab for these phenomena to occur and its dependence with the orientation of the crystal axes. We analyze, both in reflection and refraction, the displacement of the ray with respect to the incident one at the output of the slab, finding a potential measure to experimentally study this effect.