Results 41 to 50 of about 1,071,283 (270)

Percepciones de la educación básica en tiempos del covid19

Perspectivas, 2021
El año 2020, ha sido caracterizado por los efectos generados por el nuevo coronavirus, esto ha impactado todas las esferas del ser humano y en especial la educación básica, por tal motivo, este estudio ha buscado conocer las principales actitudes y ...
Óscar Lesmes Martínez, Andrea Fernanda Buitrago Roa, Julián Danilo Bedoya Osorio, Miguel Ángel Acosta Velandia   +3 more
doaj   +1 more source

A stochastic SIRI epidemic model with relapse and media coverage [PDF]

, 2018
This work is devoted to investigate the existence and uniqueness of a global positive solution for a stochastic epidemic model with relapse and media coverage.
Caraballo Garrido, Tomás, El Fatini, Mohamed, Pettersson, Roger, Taki, Regragui   +3 more
core   +1 more source

Piezoelectric Surface Charge and Dynamic Stimulation Synergize to Promote Cardiac Myoblast Alignment and Maturation

Advanced Healthcare Materials, EarlyView.
Surface polarization of PVDF films combined with mechanical stimulation generates piezoelectric electrical cues that modulate cardiomyoblast behaviour. Non‐poled and poled PVDF substrates provide distinct electroactive microenvironments influencing cell adhesion, proliferation, and differentiation.
Rafaela M Meira, Sylvie Ribeiro, Senentxu Lanceros‐Mendez, Clarisse Ribeiro   +3 more
wiley   +1 more source

Plant‐Produced Viral Nanoparticles Decorated with Nanobodies Against HER2 Improve Retention and Recruitment of Immune Cells in Solid Tumors

Advanced Healthcare Materials, EarlyView.
Potato virus X is a filamentous RNA plant virus that can be engineered into a molecular tool for cancer therapy. We produced genetically‐encoded virus‐derived nanoparticles decorated with nanobodies targeting cancer cell receptors, epidermal growth factor receptor (EGFR) and human epidermal growth factor 2 (HER2).
Enrique Lozano‐Sanchez, Miguel A. Moreno‐Gonzalez, Fernando Merwaiss, Nicole F. Steinmetz, José‐Antonio Daròs   +4 more
wiley   +1 more source

Instrucciones para los autores

Revista de Investigación, Desarrollo e Innovación, 2010
PRESENTACIÓN  La Revista de Investigación, Desarrollo e Innovación es el medio de divulgación científica de la Facultad Seccional Duitama, y tiene como objetivo la publicación de las investigaciones, reflexiones y adelantos generados en diversas áreas ...
Revista de Investigación , Desarrollo e Innovación
doaj  

Design issues and experimental characterization of a continuously-tuned adaptive CMOS LNA [PDF]

, 2010
This paper presents the design implementation and experimental characterization of an adaptive Low Noise Amplifier (LNA) intended for multi-standard Radio Frequency (RF) wireless transceivers.
Becerra Álvarez, Edwin C., Rosa Utrera, José Manuel de la, Sandoval Ibarra, F.   +2 more
core  

Integrated Visible Light and Oxidant Protection Through Multifunctional Sunscreens

Advanced Healthcare Materials, EarlyView.
High‐energy visible radiation (HEVR), although less energetic than UV light, penetrates deeper into the skin and contributes to photoaging, pigmentation disorders, and oxidative stress. The development of new HEVR‐targeted filters, therefore, represents not only a scientific challenge but also a pressing public health and cosmetic industry need.
Beatriz Peñín, Raúl Losantos, Ignacio Funes‐Ardoiz, Diego Sampedro   +3 more
wiley   +1 more source

Estimation of water stress in maize cultivation utilizing thermal and multispectral imaging from UAVs with machine learning algorithms in Lambayeque, Peru

Revista de Teledetección
Maize (Zea mays L.) is a fundamental cereal in global food security, but its vulnerability to water stress compromises its productivity and threatens food availability.
Camila Cruz-Grimaldo, Cesar Vilca-Gamarra, José Millan-Ramírez, Sheyla Y. Chumbimune-Vivanco, Cristina Llanos-Carrillo, Elvis Vera, Alex Agurto, Javier Quille-Mamani, Hairo León   +8 more
doaj   +1 more source

Innovación Social: Definiciones, Métricas, Temáticas clave, Agentes y Enfoques de impacto

Revista Galega de Economía, 2023
Este artículo analiza las tendencias de las investigaciones sobre Innovación social publicadas en la Social Science Citation Index (SSCI) de la Web of Science. Se identifica sus métricas, definiciones, características, agentes y enfoques, realizando una investigación bibliométrica con el software “Bibliometrixâ€, así como una revisión ...
openaire   +1 more source

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

Advanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora, Seung Ju Choi, Jaeki Jeong, Silvia Orecchio, Inés García‐Benito, Manuel Pérez‐Escribano, Joaquín Calbo, Likai Zheng, Minseop Byun, Seyeong Song, Gi‐Hwan Kim, Shaik M. Zakeeruddin, Seog‐Young Yoon, Yimhyun Jo, Agustín Molina‐Ontoria, Enrique Ortí, Nazario Martín, Michael Grätzel   +17 more
wiley   +1 more source