Results 221 to 230 of about 4,706,759 (328)

Electoral laws for european elections [PDF]

open access: yes, 1989
Parlamento Europeo   +1 more
core  

Experiencias de investigación psicológica en contextos educativo, clínico y comunitario [PDF]

open access: bronze
Ochoa Avila, Eneida   +2 more
openalex   +1 more source

Disrupting J‐Aggregation in Triazatruxene Dimers to Develop Responsive Luminescent Inks for Anti‐Counterfeiting Applications

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This study investigates the stimulus‐responsive behavior of trialkylated triazatruxene dimers for third‐generation luminescent security inks. In particular, the derivative with flexible dodecyl chains displays high‐contrast, reversible color changes upon heating or shear, driven by liquid crystalline phase transitions and involving J ...
Raúl Martín   +7 more
wiley   +1 more source

[Predisposing factors to sarcopenia in rural and urban older adults]. [PDF]

open access: yesAten Primaria
Bernal Regalado LO   +2 more
europepmc   +1 more source

Could Edible Photonic Structures Be an Alternative to Traditional Food Coloring?

open access: yesAdvanced Optical Materials, EarlyView.
What if color in food came from photonic structures? This perspective introduces structural color as a potential next‐generation solution to replace conventional colorants in foods. It discusses edible photonic materials, their unique benefits, and the technological, safety, and consumer acceptance challenges that must be addressed to bring this ...
Miguel A. Cerqueira   +5 more
wiley   +1 more source

La investigación cualitativa: ¿un desencuentro con las ciencias de la salud? [PDF]

open access: diamond, 2019
María Mercedes Villamil Gallego   +3 more
openalex   +1 more source

Dual‐Emission Switching in a Mn(II)‐Based Hybrid Bromide via Water Coordination: Synthesis, Structure, and Processing

open access: yesAdvanced Optical Materials, EarlyView.
This study reports the synthesis, structure, and optical properties of (pr‐ted)2[MnBr4], a luminescent manganese (II) hybrid halide. It shows green emission under UV and transforms into a red‐emitting hydrated phase with humidity, reversible by heat or vacuum. Structural, photophysical, and theoretical analyses confirm the mechanism.
Ricardo Garsed   +8 more
wiley   +1 more source

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