Results 51 to 60 of about 592,515 (267)

Escuela y conflicto. Aportaciones al estado del conocimiento

open access: yesPACTUM, 2021
Los centros escolares como instituciones socializadoras básicas enfrentan coti-dianamente situaciones de incompatibilidad y diferencia. Este artículo revisa el estado del fenómeno conflictivo en la escuela, con el propósito de evaluar el de-sarrollo académico que ha tenido este tema en los últimos años y trazar nuevas líneas de abordaje e investigación.
openaire   +2 more sources

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

La investigación curricular en Chihuahua. Un estado del conocimiento en el periodo 2007-2021

open access: yesRECIE Revista Electrónica Científica de Investigación Educativa, 2023
La investigación educativa en Chihuahua ha tenido un desarrollo significativo en las últimas décadas debido a la apertura de nuevos programas de doctorado en México.
Celia Carrera Hernández   +2 more
doaj   +1 more source

Estado del conocimiento de la fauna de anfibios y reptiles del departamento de Casanare, Colombia

open access: yes, 2014
Este estudio presenta la revision actualizada de la riqueza, composicion y distribucion de los anfibios y reptiles del departamento del Casanare.
Raúl Pedroza-Banda   +4 more
semanticscholar   +1 more source

ESTADO DEL CONOCIMIENTO DE LA BIODIVERSIDAD EN COLOMBIA Y SUS AMENAZAS. CONSIDERACIONES PARA FORTALECER LA INTERACCIÓN CIENCIA-POLÍTICA

open access: yesRevista de la Academia Colombiana de Ciencias Exactas Físicas y Naturales, 2011
En este trabajo se evalúa el estado del conocimiento, endemismos, y especies amenazadas de la biota colombiana, con un análisis de la información disponible a la fecha, estudiando el estado de conservación de los principales ecosistemas como son los ...
M. G. Andrade-C., Medio Ambiente
semanticscholar   +1 more source

Patterns of spinal motion, kinematic spaces and the land‐to‐sea transition in carnivorans

open access: yesThe Anatomical Record, EarlyView.
Using 3D reconstructions, we quantify intervertebral joint mobility to investigate how cervical, thoracic, and lumbar vertebral regions evolved distinct kinematic roles in pinnipeds. The findings reveal lineage‐specific adaptations for swimming and highlight the functional significance of vertebral joint flexibility in ecological transitions.
Juan Miguel Esteban   +3 more
wiley   +1 more source

Lacticaseibacillus rhamnosus GG and Lactobacillus casei Shirota Growth on a Medium Enriched with Rye Protein, and Assessment of DPP-IV Inhibitory Activity

open access: yesBiology and Life Sciences Forum
Due to climate change and the development of sustainable foods, protein vegetable sources are being considered as promising food commodities. Fermentation is an ancient tool for obtaining bioactive compounds, and has been exploited for bioactive peptide ...
Areli Elizabeth García-Escamilla   +7 more
doaj   +1 more source

Digital Orientation and Green Practices in Chilean SMEs: Innovation as the Pathway to Competitive Performance

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study examines how digital strategic orientation (DSO) and environmental practices (EP) interact to shape innovation and performance among Chilean SMEs. Using survey data from 271 firms (February–May 2022), we estimate a generalized structured component analysis (GSCA) model that accommodates a nonrecursive relationship between DSO and EP.
Constanza Caicha‐Caroca   +2 more
wiley   +1 more source

Plant-Based Repellency Against Tribolium castaneum for Preserving Mesquite Pod Flour as Livestock Feed

open access: yesAgronomy
In arid and semi-arid regions, mesquite (Prosopis laevigata) pods represent a strategic feed resource for low-input livestock systems; however, the utilization of mesquite pod flour is severely limited by insect infestation during storage.
Itzel Celeste Romero-Soto   +8 more
doaj   +1 more source

Hibiscus Acid and Chromatographic Fractions from Hibiscus Sabdariffa Calyces: Antimicrobial Activity against Multidrug-Resistant Pathogenic Bacteria

open access: yesAntibiotics, 2019
The anti-microbial properties of acetone extracts from Hibiscus sabdariffa calyces, fractions isolated by silica gel chromatography and hibiscus acid purified from some of these fractions and additionally identified by nuclear magnetic resonance ...
Lizbeth Anahí Portillo-Torres   +8 more
doaj   +1 more source

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