Results 91 to 100 of about 66,582 (246)

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

open access: yesAdvanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano   +18 more
wiley   +1 more source

DIFUSIÓN Y COMPARABILIDAD DE LA INFORMACIÓN ECONÓMICO -FINANCIERA ON -LINE : EL CASO DE IBEROAMÉRICA

open access: yesRevista Facultad de Ciencias Económicas, 2012
El objetivo del siguiente trabajo es generar un ranking a partir de los datos consultados del 2009 de los Ministerios de Economía y Hacienda o en su caso de Finanzas de los países de Iberoamérica más transparentes en divulgar información económico ...
José Antonio Peña Ramos   +2 more
doaj  

Securing Greater Social Accountability in Natural Resource Management [PDF]

open access: yes
The world is experiencing a historic convergence of increasing demand for natural resources from emerging economies, prices at record levels across various commodity groups, a downward trend in resource supply, serious trends of ecological instability ...
Kishan Khoday, Leisa Perch
core  

Bioorthogonal Photoactivation of 2‐Nitrobenzyl Caged Doxorubicin Anticancer Prodrugs on Gold Nanostars

open access: yesAdvanced Materials, EarlyView.
Bioorthogonal chemistry was applied to intracellularly photoactivate Doxorubicin (Dox) using gold nanostars (AuNSt) and near‐infrared (NIR) light. Two prodrugs were used: one photoactivatable, masked with 2‐nitrobenzyl carbamate (proDox1) and another photolabile, masked with 2‐nitrobenzyl diol (proDox2), which was attached to the AuNSt surface.
Juan José Esteve‐Moreno   +15 more
wiley   +1 more source

Comunicação governamental nos spots sonoros - o caso brasileiro

open access: yesMás Poder Local
Neste artigo apresentamos um mapeamento dos spots produzidos pelos ministérios no primeiro ano de governo Lula (PT), com a sua segunda reeleição, em 2022.
Luciana Panke   +2 more
doaj  

HIV and Income Inequality: If There Is a Link, What Does It Tell Us? [PDF]

open access: yes
The global HIV prevalence map reveals striking contrasts between high- and low-prevalence countries. Africa is the most affected continent, but within Africa there is a distinct geographical pattern.
Göran Holmqvist
core  

Brazilian Portuguese Words for Design [PDF]

open access: yes, 2009
Brazilian Portuguese is the Portuguese spoken in Brazil, which has slight differences from the Portuguese spoken in Portugal. One may try to understand such differences by comparing them with the dissimilarities between the American English and the ...
Cassidy, Tracy Diane, Gies, Sheila
core  

Resolving the Structural Duality of Graphene Grain Boundaries

open access: yesAdvanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo   +11 more
wiley   +1 more source

La naturaleza eclesiológica de la «retractación» de Congar: de «Jalones» (1953) a «Ministerios y Comunión» (1971) (II)

open access: yesEstudios Eclesiásticos, 2019
En Jalones para una teología del laicado (1953) hemos abordado el esquema eclesiológico que caracteriza al pensamiento de Congar en la época anterior al Vaticano II.
María Jesús Fernández Cordero
doaj  

Self‐Cooling Molecular Spin Qudits

open access: yesAdvanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios   +12 more
wiley   +1 more source

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