Results 41 to 50 of about 3,690,866 (301)

Coordinated Multi‐Component Gradient Engineering of Catalyst Layers for Advanced Polymer Electrolyte Fuel Cells

open access: yesAdvanced Functional Materials, EarlyView.
This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou   +15 more
wiley   +1 more source

It\u27s a Long Way from Home [PDF]

open access: yes, 2011
Postcard from Samantha McCarty, during the Linfield College Semester Abroad Program at Centro Cultural e Historico Jose Figueres Ferrer, in San Ramón, Costa ...
McCarty, Samantha
core   +1 more source

Tissue Engineered Human Elastic Cartilage From Primary Auricular Chondrocytes for Ear Reconstruction

open access: yesAdvanced Functional Materials, EarlyView.
Despite over three decades of research, no tissue‐engineered solution for auricular reconstruction in microtia patients has reached clinical translation. The key challenge lies in generating functional elastic cartilage ex vivo. Here, we integrate synergistic cell‐biomaterial strategies to engineer auricular grafts with mechanical and histological ...
Philipp Fisch   +13 more
wiley   +1 more source

Comparación de tres métodos cortos contra un método estándar para analizar la composición nutricional de reportes de consumo de alimentos de adultos costarricenses.

open access: yesPoblación y Salud en Mesoamérica, 2020
Objetivo: comparar tres métodos cortos de análisis de datos de consumo de alimentos contra un método estándar en un grupo de adultos costarricenses.  Metodología: se realizó un análisis de la composición nutricional de los alimentos incluidos en 100 ...
Mónica Martín-Céspedes   +7 more
doaj   +1 more source

Person to Person in Costa Rica [PDF]

open access: yes, 2013
While still in the midst of their study abroad experiences, students at Linfield College write reflective essays. Their essays address issues of cultural similarity and difference, compare lifestyles, mores, norms, and habits between their host countries
Knopf, Celeste
core   +1 more source

The Cuttlebone Blueprint for Multifunctional Metamaterials: Design Taxonomy, Functional Decoupling, and Future Horizons

open access: yesAdvanced Functional Materials, EarlyView.
Cuttlebone‐inspired metamaterials exploit a septum‐wall architecture to achieve excellent mechanical and functional properties. This review classifies existing designs into direct biomimetic, honeycomb‐type, and strut‐type architectures, summarizes governing design principles, and presents a decoupled design framework for interpreting multiphysical ...
Xinwei Li, Zhendong Li
wiley   +1 more source

RIQUEZA DE ESPECIES DE AVES DE LA MICROCUENCA DEL RÍO CACALUTA, OAXACA, MÉXICO

open access: yesEcosistemas y Recursos Agropecuarios, 2014
Se documenta la riqueza de especies de aves en la microcuenca del río Cacaluta, Oaxaca, obtenida du-rante 33 días de muestreo; se registraron 110 especies incluidas en 40 familias y 16 órdenes. De estas, 78 (71%) fueron residentes y 32 (29%) migratorias.
JC Bojorges-Baños
doaj   +1 more source

4D‐Printable Poly(Thio)urethane Photoresins With Reactive Oxygen Species Responsiveness and Anti‐Inflammatory Functionality

open access: yesAdvanced Functional Materials, EarlyView.
This work introduces UV‐curable poly(thio)urethane (PSU) thermosets as 4D printable scaffolds responsive to oxidative stress. PSU networks with 100 wt.% polypropylene glycol (PPG) effectively suppress inflammatory markers in microglial cells to basal values.
Xabier Lopez de Pariza   +10 more
wiley   +1 more source

Nested turbo codes for the costa problem [PDF]

open access: yes, 2008
Driven by applications in data-hiding, MIMO broadcast channel coding, precoding for interference cancellation, and transmitter cooperation in wireless networks, Costa coding has lately become a very active research area.
Cheng, Samuel   +5 more
core   +1 more source

Thermo‐Mechanically Recyclable Smart Textiles from Circularly Knitted Liquid Crystal Elastomer Fibers

open access: yesAdvanced Functional Materials, EarlyView.
Reprogrammable multi‐material smart textiles knitted from liquid crystal elastomer fibers undergo 2D and 3D deformation under thermal and photo stimuli. Circularly knitted tubular structures reversibly contract in radial and axial directions, enabling autonomous climbing, liquid release, and micro pumping.
Xue Wan   +8 more
wiley   +1 more source

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