Results 21 to 30 of about 1,550,892 (327)

BEL β-Trefoil Reduces the Migration Ability of RUNX2 Expressing Melanoma Cells in Xenotransplanted Zebrafish

open access: yesMolecules, 2020
RUNX2, a master osteogenic transcript ion factor, is overexpressed in several cancer cells; in melanoma it promotes cells migration and invasion as well as neoangiogenesis.
Maria Teresa Valenti   +5 more
doaj   +1 more source

Determination of ICT Competencies of Visual Arts Teachers at the Universidad del Atlántico - Virtual and Distance Education [PDF]

open access: yesAthens Journal of Education, 2016
The purpose of this research is to determine the ICT Competencies of Visual Arts teachers at University of Atlántico for Distance and Virtual Education. We also want to know what their perception is about the use of virtual learning environments in their
Giovanni Polifroni Lobo   +1 more
doaj   +1 more source

Pure Luminosity Evolution models for faint field galaxy samples [PDF]

open access: yes, 1996
We have examined a set of pure luminosity evolution (PLE) models in order to explore up to what extent the rapidly increasing observational constraints from faint galaxy samples can be understood in this simple framework.
A., G. Bruzual   +2 more
core   +3 more sources

Nuevo “rol” y paradigmas del Aprendizaje, en una Sociedad Global en RED y Compleja: la Era del Conocimiento y el Aprendizaje

open access: yesArbor: Ciencia, Pensamiento y Cultura, 2009
En el ámbito de un entorno global, en RED, y Complejo, algo sustancial está cambiando en el ámbito del Conocimiento (K), en particular la transformación cualitativa del proceso de creación y compartición del “K” (e-Conocimiento), cuyo impacto está ...
Enrique Rubio Royo
doaj   +1 more source

Optimization of pressurized liquid extraction using a multivariate chemometric approach and comparison of solid phase extraction cleanup steps for the determination of polycyclic aromatic hydrocarbons in mosses [PDF]

open access: yes, 2012
A factorial design was used to optimize the extraction of polycyclic aromatic hydrocarbons (PAHs) from mosses, plants used as biomonitors of air pollution.
Foan, Louise, Simon, Valérie
core   +3 more sources

Extraction of anthocyanins and total phenolic compounds from açai (euterpe oleracea mart.) using an experimental design methodology. part 1: Pressurized liquid extraction [PDF]

open access: yes, 2020
Currently, açai is one of the most important fruits present in the world. Several studies have demonstrated its high content in phenolic compounds and anthocyanins.
Aliaño González, María José   +7 more
core   +1 more source

APRENDIZAGEM DE PORTUGUÊS COMO LÍNGUA ESTRANGEIRA COM USO DO FACEBOOK E SOB A ORIENTAÇÃO DE COMUNIDADE DE BUSCA DO CONHECIMENTO

open access: yesRevista X, 2017
Este artigo descreve uma enquete, de forma comparativa, sobre a predisposição de estudantes para o uso de redes sociais na educação e analisa o uso do Facebook, como Comunidade de Busca do Conhecimento (Community of Inquiry), para o ensino de português ...
Luis Eduardo Wexell-Machado
doaj   +1 more source

Interferências linguísticas em produções textuais de venezuelanos aprendizes de português como língua estrangeira

open access: yesDomínios de Lingu@gem, 2020
No contexto brasileiro, o contato entre falantes de línguas diferentes é um fenômeno acentuado, principalmente nas zonas fronteiriças com os países da América do Sul.
Fabricio Paiva Mota
doaj   +1 more source

Spectroscopic characterization of 1.3µm GaInNAs quantum-well structures grown by metal-organic vapor phase epitaxy [PDF]

open access: yes, 2005
We report optical studies of high-quality 1.3 μm strain-compensated GaInNAs/GaAs single-quantum-well structures grown by metalorganic vapor phase epitaxy.
Calvez, S.   +8 more
core   +1 more source

Bioefficacy of Nga-Mon (Perilla frutescens) Fresh and Dry Leaf: Assessment of Antioxidant, Antimutagenicity, and Anti-Inflammatory Potential

open access: yesPlants, 2023
Perilla leaves are known to be a rich source of polyphenols, which have been shown to exhibit various biological effects. This study aimed to compare the bioefficacies and bioactivities of fresh (PLEf) and dry (PLEd) Thai perilla (Nga-mon) leaf extracts.
Payungsak Tantipaiboonwong   +5 more
doaj   +1 more source

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