Results 41 to 50 of about 429,956 (192)

A teoria da luz de Newton nos textos de Young

Revista Brasileira de Ensino de Física
A concepção de Newton sobre a luz tem sido alvo de controvérsia. Alguns autores consideram sua teoria puramente corpuscular; outros, infiuenciados pelos textos de Young, defendem que ela seria uma combinação de elementos corpusculares e ondulatórios.
Fabio W.O. da Silva
doaj   +1 more source

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

Advanced 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, Nicolas Vogel, Martin Lopez‐Garcia, Krassimir P. Velikov, Silvia Vignolini, Lorenzo M. Pastrana   +5 more
wiley   +1 more source

Magnetic Resonance Imaging Reveals Meningeal Lymphatic Impairment in Lung Adenocarcinoma Brain Metastasis Progression

Advanced Science, EarlyView.
This study demonstrates meningeal lymphatic impairment associated with lung adenocarcinoma brain metastasis progression in both human patients and mouse models, establishes clinically applicable non‐invasive imaging biomarkers for quantitative analyzing mLV structure and function, and reveals mLVs as robust prognostic indicators and promising potential
Yuan Zhang, Shucheng Jin, Penghui Guo, Yuying Yin, Yichun Hua, Xiaosheng Ding, Zhe Zhang, Shuo Chen, Xu Han, Baowang Li, Yan Liu, Xiaoyan Li, Deling Li, Jing Jing, Wei Shi, Wang Jia   +15 more
wiley   +1 more source

Atividades experimentais no ensino de óptica: uma revisão

Revista Brasileira de Ensino de Física
Apresentamos nesse trabalho uma revisão de artigos que tratam sobre a experimentação no ensino de óptica, entre 1998 e 2010. Os artigos revisados foram publicados nos seguintes periódicos: Caderno Brasileiro de Ensino de Física, Revista Brasileira de ...
Jair Lúcio Prados Ribeiro, Maria de Fátima da Silva Verdeaux   +1 more
doaj   +1 more source

Impact of long-range transport over the Atlantic Ocean on Saharan dust optical and microphysical properties based on AERONET data [PDF]

Atmospheric Chemistry and Physics, 2018
Arid regions are a major source of mineral dust aerosol. Transport from these sources can have a great impact on aerosol climatology in distant regions.
C. Velasco-Merino, D. Mateos, C. Toledano, J. M. Prospero, J. Molinie, L. Euphrasie-Clotilde, R. González, V. E. Cachorro, A. Calle, A. M. de Frutos   +9 more
doaj   +1 more source

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source

Extracellular Vesicles in Autoimmune Diseases: From Diagnostic Biomarkers to Engineered Therapeutics

Advanced Science, EarlyView.
This review provides a systematic comparison of extracellular vesicles (EVs) from both mammalian and plant sources in the context of autoimmune diseases. It highlights their emerging roles as precision biomarkers and engineered therapeutic platforms.
Yufei Wu, Huiyuan Ma, Tinghui Zhu, Shuwei Huang, Manxi Lu, Qiong Wang, Zai‐Long Chi   +6 more
wiley   +1 more source

A propósito de Hockney: consideraciones sobre "el conocimiento secreto"

EGA, 2013
En todas las culturas, a aquellas personas capaces de representar la realidad de manera reconocible se les ha distinguido como poseedores de una especie de "don divino" y, además, en numerosas ocasiones, este hecho les ha proporcionado determinados ...
Fernando Fraga López
doaj   +1 more source

Macro to nano specimen measurements using photons and electrons with digital holographic interferometry: a review

Journal of the European Optical Society-Rapid Publications, 2020
Today digital holographic interferometry (DHI) is considered a modern full-field non-destructive technique that allows generating 3D quantitative data of a wide variety of specimens.
María del Socorro Hernández-Montes, Fernando Mendoza-Santoyo, Mauricio Flores Moreno, Manuel de la Torre-Ibarra, Luis Silva Acosta, Natalith Palacios-Ortega   +5 more
doaj   +1 more source

Generation of J0 Bessel Beams with controlled spatial coherence features

, 2010
An alternative method to generate J0 Bessel beams with controlled spatial partial coherence properties is introduced. Far field diffraction from a discrete number of source points on an annular region is calculated.
Adrian Carbajal-Dominguez, Alberto Martin-Ruiz, Bouchal, Bouchal, Dubois, Durnin, Eyyuboglu, Gabriel Martínez Niconoff, Jorge Bernal, Liu, Niconoff, Saastamoinen, Tao, Williams   +13 more
core   +1 more source