Results 141 to 150 of about 2,392,624 (355)

Engineered Protein‐Based Ionic Conductors for Sustainable Energy Storage Applications

open access: yesAdvanced Materials, EarlyView.
Rational incorporation of charged residues into an engineered, self‐assembling protein scaffold yields solid‐state protein films with outstanding ionic conductivity. Salt‐doping further enhances conductivity, an effect amplified in the engineered variants. These properties enable the material integration into an efficient supercapacitor.
Juan David Cortés‐Ossa   +14 more
wiley   +1 more source

Agenda-setting: investigaciones sobre el primero y el segundo nivel

open access: yesCommunication & Society (Formerly Comunicación y Sociedad), 1996
Cuando en 1972 McCombs y Shaw formularon por primera vez la teoría del efecto agenda-setting, introducían una modificación sustancial en la investigación sobre los efectos de los medios de difusión en la opinión publica.
Esteban López-Escobar   +1 more
doaj  

Role of Liquid Composition in the Transient Liquid Assisted Growth of Superconducting YBa2Cu3O7‐δ Films

open access: yesAdvanced Materials, EarlyView.
The Y supersaturation in the [Ba‐Cu(I/II)‐O] transient liquid composition is the driving force toward YBCO nucleation and growth in TLAG. Tuning the initial (Ba:Cu) molar ratio in the ink composition determines the YBCO epitaxial nucleation through supersaturation control.
Lavinia Saltarelli   +12 more
wiley   +1 more source

Revisión del género Uncaria. Uncaria tomentosa y uncaria guianensis : las "Uña de gato"

open access: yesRevista de Química, 1995
El artículo no presenta resumen.
Olga Lock de Ugaz
doaj  

Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives

open access: yesAdvanced Materials, EarlyView.
Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi   +4 more
wiley   +1 more source

Loxodontomys pikumche (Rodentia, Cricetidae): nueva especie para Argentina [PDF]

open access: yes, 2009
We report the first record of occurrence of Loxodontomys pikumche Spotorno et al., 1998, in the Central Andes of Argentina. We briefly describe external characters, skull, karyotype, and habitat; also, we provide general comparisons with the other known ...
Novillo, Agustina   +2 more
core  

Counterintuitive Fluorescence Blue Shift in Symmetry Breaking Dicationic Bis(indolium) with Two‐Photon Absorption Properties for NIR Living Cell Imaging

open access: yesAdvanced Materials, EarlyView.
Highly water‐soluble dicationic bis(indolium) dyes have been prepared, showing excellent two‐photon absorption and light emission. Their fluorescence behavior discloses an unusual increasing blue shift with increasing solvent polarity, which, in parallel, is beneficial for enhanced detection in biological media.
Carlos Benitez‐Martin   +5 more
wiley   +1 more source

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

Conferencia. Perspectivas de investigación en seguridad alimentaria

open access: yesPerspectivas en Nutrición Humana, 2002
E concepto de seguridad alimentaria ha evolucionado a partir de la Conferencia Mundial sobre la alimentación de 1974 desde un enfoque basado en la disponibilidad de alimentos hasta las definiciones actuales que abarcan la suficiencia, estabilidad y ...
Santa Jiménez
doaj  

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