Results 41 to 50 of about 3,695,429 (303)

Adiciones a las algas de agua dulce de las cascadas de Barranco

open access: yesRevista Peruana de Biología, 2014
En el presente trabajo se describen 13 especies de algas de agua dulce, colectadas en las Cascadas de Barranco, Departamento de Lima. Las especies estudiadas constituyen nuevos registros para la zona y 8 de ellas lo son para la flora peruana.
César Acleto O.
doaj   +1 more source

Asegurar la permanencia estudiantil en la Universidad de Costa Rica durante la crisis sanitaria. Reflexiones desde la Vicerrectoría de Vida Estudiantil

open access: yesActualidades Investigativas en Educación, 2021
La crisis sanitaria producida por el virus SARS-CoV-2 es uno de los retos más complejos de la humanidad en el último siglo. Las universidades públicas enfrentan enormes tareas para asegurar el ingreso, la permanencia, la gestión del plan de estudios y ...
Carlos Sandoval García   +8 more
doaj   +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

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

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

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

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

Mechanical and Electrical Phenotype of hiPSC‐Cardiomyocytes on Fibronectin‐Based Hydrogels

open access: yesAdvanced Healthcare Materials, EarlyView.
We introduce fibronectin‐based PEG hydrogels with controlled rigidity to enable the culture of iPSC‐derived cardiomyocytes. These substrates offer an alternative to the current culture of these cells on fibronectin‐coated glass, providing enhanced structural and functional behavior. The system provides a more physiologically relevant platform to assess
Ana Da Silva Costa   +8 more
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

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

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