Results 121 to 130 of about 1,301,352 (304)

The Trump Revolution: A New Order of Great Powers

open access: yesJournal of Liberty and International Affairs
This section does not require an abstract.
Yang Li
doaj  

An All‐Optical Driven Bio‐Photovoltaic Interface for Active Control of Live Cells

open access: yesAdvanced Functional Materials, EarlyView.
Bio‐photovoltaic Interface (BIO‐PV‐I) for live cell manipulation is presented. BIO‐PV‐I can be activated non‐invasively and remotely to control the spatial motility, adhesion, and morphology of cells adhering to it. BIO‐PV‐I uses a patterned light‐induced electric potential in iron‐doped lithium niobate crystals whose light‐driven and reversible nature,
Lisa Miccio   +8 more
wiley   +1 more source

Problema Basarabiei reflectată în rapoartele ambasadorului francez la Petersburg Charles Auguste de Morny (1856-1857) / Bessarabian question reflected in the reports of the French ambassador in Petersburg Charles Auguste de Morny (1856-1857)

open access: yesTyragetia, 2016
After the Crimean War the Bessarabian question had an important place in the foreign policy of the Great Powers. During the preliminaries of peace in 1855 it was decided that Russia should cede Southern Bessarabia to the Principality of Moldavia. Russia,
Eugen-Tudor Sclifos
doaj  

Potencias en ascenso y países periféricos: la vinculación comercial de Argentina con el BRIC [PDF]

open access: yes, 2013
Entre 1989 y 2011 hubo importantes cambios en la estratificación internacional económica de grandes y medianas potencias. El análisis parte del criterio de Pareto, conocido como 20/80, el cual estratifica a las naciones en grandes, medianas y pequeñas ...
Bolinaga, Luciano Damian
core   +1 more source

Raman Microscopy at the Organic–Inorganic Interfaces in Human Calcified Aortic Valves Shows the Co‐Existence of Whitlockite Crystals and Carbonated Hydroxyapatite‐Mineralized Collagen Fibrils

open access: yesAdvanced Functional Materials, EarlyView.
This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden   +11 more
wiley   +1 more source

Solar Heating Enhanced Selective Recovery of Metal Ions Through Flowing Electrodes Enabled by Hybrid Carbon Nanostructures

open access: yesAdvanced Functional Materials, EarlyView.
A new electrochemical system based on a microporous hybrid of carbon nanoplatelets and nanotubes to selectively capture Ni2+ from wastewater is constructed. The system temperature rises rapidly when irradiated with sunlight, which enhances the Ni2+ removal rate by 250% and the selectivity by 53%, and the energy consumption is also reduced by 51 ...
Ziquan Wang   +11 more
wiley   +1 more source

Electrochemically Driven Dissipative Growth of Affinity Hydrogels for Bioresponsive Interfaces

open access: yesAdvanced Functional Materials, EarlyView.
Voltage pulses drive the growth and reinforcement of hydrogel films under dissipative conditions. This biocompatible strategy enables efficient integration of affinity ligands into the hydrogel matrix, enhancing the selective capture of growth factors and allowing precise temporal control over their release, making them well‐suited as adaptive ...
Roberto Baretta, Marco Frasconi
wiley   +1 more source

Can Latin America play a more influential role in a shifting world order?

open access: yesFrontiers in Political Science
Latin America has played a secondary role in international challenges to a unipolar world order in today’s space for influence in managing the critical challenges transnational security and conflict. This article relations with a focus on Latin America’s
Carmelo Cattafi, Robert Papp
doaj   +1 more source

Viscoelasticity‐Induced Controllable Periodic Meso‐Textures of Liquid Crystal Polymers in Additive Manufacturing

open access: yesAdvanced Functional Materials, EarlyView.
Viscoelasticity‐driven instabilities are harnessed to create tunable, periodic textures in 3D‐printed liquid crystalline polymers. This study illustrates how processing parameters control these spontaneous meso‐scale patterns. These unique structural architectures unlock new possibilities for functional devices, ranging from photonic components to ...
Miaomiao Zou   +17 more
wiley   +1 more source

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