Results 111 to 120 of about 560,849 (261)

Pôr do sol químico

open access: yes, 2014
Ensino Médio::QuímicaO vídeo apresenta uma demonstração, utilizando retroprojetor, que simula o pôr do sol. A reação entre tiossulfato de sódio e um ácido produz partículas muito pequenas, de enxofre sólido, dispersas na solução (colóide chamado de sol).
Mateus, Alfredo
core  

Atomic Tuning of Metal‐Support Interactions for Pathway‐Selective CO2 Photoreduction on TiO2

open access: yesAdvanced Science, EarlyView.
Single‐atom Fe and Cu catalysts anchored on TiO2 steer photocatalytic CO2 reduction toward distinct pathways. Fe sites favor rapid *CO desorption and selective CO formation, whereas Cu sites stabilize *CHO intermediates, enabling deep reduction and C─C coupling. Combined spectroscopy and DFT calculations reveal how metal–support interactions and oxygen
Dongyun Kim   +13 more
wiley   +1 more source

Functional Disorder at the Neural Interface: How Disordered Nanostructures Promote Proper Growth and Differentiation in In Vitro Neural Cultures

open access: yesAdvanced Science, EarlyView.
This work provides a practical guide for neuroengineers to design advanced neural interfaces, embracing and tailoring the concept of functional disorder. By bridging 2D and 3D in vitro models, this work highlights how non‐periodic, spatially heterogeneous, multiscale nanotopography can enable more physiologically relevant platforms for studying neural ...
F. Maita   +4 more
wiley   +1 more source

25-hydroxy vitamin D and syndrome metabolic components in candidates to bariatric surgery

open access: yesNutrición Hospitalaria
Aim: The aim of this study was to assess the prevalence of hypovitaminosis D in candidates to bariatric surgery (BS) and its relationship with risk factors and components of the metabolic syndrome.
Ana Obispo Entrenas   +6 more
doaj   +1 more source

Nanomaterials for Allergy Diagnosis and Treatment: Advances, Opportunities and Translational Challenges

open access: yesAdvanced Science, EarlyView.
Nanomaterials offer dual applications in allergy management. For diagnosis, nanomaterials enhance analytical sensitivity and improve detection in specific IgE and functional assays such as the basophil activation test (BAT). For allergen‐specific immunotherapy, nanomaterials enable allergen masking and controlled release, and effectively modulate the ...
Madiha Habib   +8 more
wiley   +1 more source

Recent Advances in Carbon Cathode Materials toward High‐Performing Zinc‐Ion Hybrid Supercapacitors

open access: yesAdvanced Science, EarlyView.
Aqueous zinc‐ion hybrid supercapacitors (ZHSCs) have emerged as promising next‐generation electrochemical energy‐storage devices. Porous carbon materials have been extensively studied as cathodes, with advances in tailoring pore structures and material properties to enhance performance.
Take Hirooka   +3 more
wiley   +1 more source

Pirámide del Sol, águlo noroeste

open access: yes, 1940
I.O. "XLVIII-46". Inscripción en la guarda: "SAN JUAN TEOTIHUACAN", "PIRAMIDE DEL SOL", "PREHISPANICOS TOMO XLVIII-46".

core  

Magnetoelectric Nanoparticles Enable Modulation of Cortical Networks by Low‐Intensity Static Magnetic Fields In Vitro

open access: yesAdvanced Science, EarlyView.
Neuromodulation strategies are increasingly needed to stimulate, restore, or replace altered neuronal activity in disease. Cobalt ferrite‐barium titanate (CFO–BTO) magnetoelectric nanoparticles convert low‐intensity static magnetic fields into local electrical modulation of cortical networks.
Nathalia Cancino‐Fuentes   +13 more
wiley   +1 more source

Simulation thermique des locaux en contact avec le sol par voie d’analyse modale

open access: yesRevue des Énergies Renouvelables, 2013
Nous présentons dans ce travail un modèle de simulation thermique des bâtiments en contact avec le sol. Il permet l’étude du comportement thermique des éléments de l’enveloppe, du plancher bas en contact avec le sol et enfin le couplage entre les ...
A. Zairi, A. Mokhtari
doaj  

High‐Entropy Engineering and External Magnetic Field Modulation Synergistically Enhance the H2S Sensing Performance of Rare‐Earth Perovskite Ferrites

open access: yesAdvanced Science, EarlyView.
A novel high‐entropy perovskite oxide, (Gd0.2Tb0.2Dy0.2Ho0.2Er0.2)FeO3, was successfully synthesized for advanced hydrogen sulfide gas detection. By synergistically coupling high‐entropy‐induced local lattice distortion with weak magnetic field modulation, the tailored material generates abundant active sites. This innovative dual strategy dramatically
Yunfei Wang   +7 more
wiley   +1 more source

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