Results 51 to 60 of about 66,582 (246)

Bio‐Inspired Magnetically Tunable Structural Colors from Elliptical Self‐Assembled Block Copolymer Microparticles

open access: yesAdvanced Functional Materials, EarlyView.
Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta   +8 more
wiley   +1 more source

O poder no Executivo: uma análise do papel da Presidência e dos Ministérios no presidencialismo de coalizão brasileiro (1995-2010)

open access: yesOpinião Pública, 2013
Qual o papel da Presidência e dos Ministérios na produção legislativa do Poder Executivo? Com base em uma abordagem transacional sobre a relação entre o Presidente e os ministros, busca-se, a partir da identificação da autoria das iniciativas ...
Mariana Batista
doaj   +1 more source

MagPiezo: A Magnetogenetic Platform for Remote Activation of Endogenous Piezo1 Channels in Endothelial Cells

open access: yesAdvanced Functional Materials, EarlyView.
MagPiezo enables wireless activation of endogenous Piezo1 channels without genetic modification using 19 nm magnetic nanoparticles and low‐intensity magnetic fields. It generates torque forces at the piconewton scale to trigger mechanotransduction in endothelial cells, standing as a novel platform to interrogate and manipulate Piezo1 activity in vitro.
Susel Del Sol‐Fernández   +7 more
wiley   +1 more source

Dual‐Site Ru Single‐Atoms and RuP Nanoclusters on N, P, and B Co‐Doped Porous Carbon for Efficient Alkaline HER and AEM Water Electrolysis

open access: yesAdvanced Functional Materials, EarlyView.
Ru single atoms and RuP nanoclusters are co‐anchored in N, P, and B co‐doped porous carbon nanospheres via in situ carbonization/phosphidation of a boronate polymer precursor. RuP activates water, while nearby Ru single atoms accelerate H2 formation through H* transfer. The catalyst delivers low overpotential and high durability in alkaline HER and AEM
Xiaohong Wang   +13 more
wiley   +1 more source

How Should MDG Implementation Be Measured: Faster Progress or Meeting Targets? [PDF]

open access: yes
A critically important aspect of the Millennium Development Goals (MDGs) is that they provide concrete, time-bound and quantitative objectives against which poverty reduction can be measured. Governments can be held accountable by their people.
Joshua Greenstein, Sakiko Fukuda-Parr
core  

Incentivos à corrupção e à inação no serviço público : uma análise de desenho de mecanismos [PDF]

open access: yes, 2016
O artigo analisa os incentivos criados pelo marco legal brasileiro ao desempenho e à gestão inovadora no funcionalismo público. Um modelo de teoria da decisão sugere que servidores de carreira tendem a não inovar em sua gestão para não serem acusados de ...
Bugarin, Maurício Soares   +1 more
core   +3 more sources

Electro‐Chemo‐Mechanical Coupling in Hf0.5Zr0.5O2 Ferroionic Heterostructures

open access: yesAdvanced Functional Materials, EarlyView.
Schematic of a ferroionic HZO heterostructure where epitaxial interfaces enable dynamic oxygen‐vacancy exchange, coupling ionic and ferroelectric degrees of freedom. Vacancy‐mediated polarization modulation biases HZO polymorphism, suppresses leakage, and enhances piezoelectric response, yielding distinct butterfly‐loop evolution and diode‐like ...
Achilles Bergne   +17 more
wiley   +1 more source

Social Cash Transfers in Zambia: What Is Their Impact? [PDF]

open access: yes
Social cash transfers (SCTs) have become increasingly popular in Sub-Saharan Africa, because growth-centred development policies have failed to reduce poverty. SCTs support the consumption of the poorest, and allow them to invest in human and other forms
Gelson Tembo, Nicholas Freeland
core  

From Bug to Feature: Harnessing Cross‐Sensitivity for Multiparametric Luminescence Sensing

open access: yesAdvanced Functional Materials, EarlyView.
Cross‐sensitivity in luminescence sensing is reframed from a limitation into a resource for multiparametric detection. Using ruby microspheres as a model system, cross‐sensitivity is quantitatively assessed and exploited through linear discriminant analysis, enabling simultaneous, correction‐free pressure and temperature sensing with a single ...
Nikita Panov   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy