Results 11 to 20 of about 27,293 (204)
El carácter idealizado de las leyes de la termodinámica clásica: ¿en qué consiste?
DaimonEn la segunda mitad del siglo XX Nowak denunció que las teorías y las leyes científicas tienen un aspecto idealizado que pasaron de largo los filósofos de la ciencia que consideraron como correcto el modelo nomológico deductivo de la explicación ...
Edgar Eduardo Rojas Durán
doaj +2 more sources
A three-dimensional model to describe complete human corneal oxygenation during contact lens wear. [PDF]
J Biomed Mater Res B Appl Biomater, 2023 A full 3D axisymmetric and time‐dependent model of the cornea‐lens system has been numerically solved to determine the oxygen flux and consumption in each part of the cornea. We apply our model to different lenses currently usted on the market, showing the importance of detailed geometry in the modelling of these systems. Abstract We perform a novel 3D
Aguilella-Arzo M, Compañ V.
europepmc +2 more sources
A new three-dimensional model to describe human corneal oxygenation during contact lenses wear. [PDF]
Ophthalmic Physiol OptAbstract Purpose This three‐dimensional study investigated how different contact lens materials affect oxygen levels in the cornea. Specifically, it measured oxygen tension, flux and consumption in the epithelium, stroma and endothelium when exposed to various contact lenses.
Gozálvez-Zafrilla JM +2 more
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Advanced Optical Materials, Volume 11, Issue 20, October 18, 2023., 2023 The addition of a large amount of β‐(1,4) cellulose oligosaccharide (20 wt.%) to metal halide perovskites (MHPs) layers causes a reduction of the perovskite grains to the nanometer scale (30–40 nm) together with a 14‐fold increase of the photoluminescence quantum yield (PLQY).
Susana Ramos‐Terrón +9 more
wiley +1 more source
Study of the solubility of xonotlite
ce/papers, Volume 6, Issue 2, Page 238-245, September 2023., 2023 Abstract Xonotlite (Ca6Si6O17(OH)2) is a hydrated crystalline calcium silicate with CaO/SiO2 = 1, which forms under hy‐drothermal conditions at temperature above ∼100°C. It has good thermal stability, it dehydrates to wollastonite only at 770 to 800°C and shows a good resistance to high pressures.
Serena Mingione +3 more
wiley +1 more source
Insight into the Role of Guanidinium and Cesium in Triple Cation Lead Halide Perovskites
Solar RRL, Volume 5, Issue 12, December 2021., 2021 Partial replacement (5–15%) of methylammonium (MA) in the MAPbI3 perovskite by cesium or guanidinium (Gua) cations is demonstrated by X‐ray diffraction, revealing shrinkage or expansion of the unit cell upon Cs or Gua incorporation, respectively. The power conversion efficiency improves from an average value of 18.6% for the MAPbI3 to a value of 20.0 ...
Susana Ramos-Terrón +4 more
wiley +1 more source
Vida Científica Boletín Científico de la Escuela Preparatoria No. 4, 2023 Termoquímica y termodinámica son términos entrelazados que en ocasiones se confunden, el presente resumen establece la conceptualización básica de ambos para encontrar diferencias y con ello, iniciar el estudio de ambos de manera sencilla y fundamentada.
Mariángel Castillo Arteaga
semanticscholar +1 more source
Size‐Based Cationic Molecular Sieving through Solid‐State Nanochannels
Advanced Materials Interfaces, Volume 8, Issue 6, March 23, 2021., 2021 The molecular sieving behavior of a soft‐etched nanoporous polyimide membrane using cationic alkali metal‐crown ether complexes and organic cations ranging in size from ammonium to tetraalkylammonium is demonstrated. The experimental data shows that nanochannels only allow the permeation of small cationic species, while excluding the larger ones ...
Mubarak Ali +6 more
wiley +1 more source
O uso do caraipé na cerâmica Caeteuara: interseções entre os saberes da tradição e a termodinâmica
Rematec, 2023 O artigo promove um diálogo entre a sabedoria tradicional indígena e os princípios científicos ligados à Física. O foco centra-se na produção de cerâmica na comunidade Vila Cuera, estado do Pará, Brasil.
S. Rosário, Carlos Aldemir Farias
semanticscholar +1 more source
Termodinâmica Noturna dos Ecossistemas Amazônicos
Revista Brasileira de Climatologia, 2023 O objetivo deste artigo é estabelecer um modelo teórico não-empírico para o resfriamento noturno dos ecossistemas amazônicos dentro do escopo de compreender melhor a termodinâmica de tais ecossistemas.
Iramaia De Paulo +5 more
semanticscholar +1 more source