Results 71 to 80 of about 6,336 (257)
Timing of gene expression in a cell‐fate decision system
Molecular Systems Biology, 2018 During development, morphogens provide extracellular cues allowing cells to select a specific fate by inducing complex transcriptional programs. The mating pathway in budding yeast offers simplified settings to understand this process. Pheromone secreted
Delphine Aymoz +6 more
doaj +1 more source
Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet
Advanced Materials, EarlyView.Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens +8 more
wiley +1 more source
Advanced Materials, EarlyView.Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano +18 more
wiley +1 more source
Scientia Marina, 1999 This paper summarizes the results of a taxonomic study of the isopods collected during the Antártida 1986-11 expedition. A total of 123 specimens were studied, of which 99 were in the adult or juvenile phases and 24 were in the postmanca phase.
J. Castelló
doaj +1 more source
Solvent‐Free Thermal Defect Engineering in Molecular Frameworks With Volatile Linkers
Advanced Materials, EarlyView.Thermal removal of neutral volatile linkers enables precise and solvent‐free generation of metal vacancies in MOFs. This strategy affords redox‐stable, coordinatively unsaturated FeII sites with tunable spin, ligand coordination, and catalytic behavior. The approach offers a general route to design defect‐functional materials through local coordination
Sonia Martínez‐Giménez +9 more
wiley +1 more source
Novel·les a la classe de ciències : una nova mirada a les narratives de ficció
Ciències, 2018 En aquest article es presenta la proposta d’usar novel·les a la classe de ciències com a context tot descrivint-ne les seves potencialitats a nivell teòric. A més a més, es fa una proposta d’anàlisi en la que es consideren els aspectes científics,
Isabel Pau Custodio
doaj +1 more source
Els contextos quotidians i els Estudis de Cas com a espai didàctic per a l'ensenyament de les Ciències basat en Projectes [PDF]
, 2017 L’Aprenentatge Basat en Projectes suposa una oportunitat per a l’ensenyament de les ciències, perquè inclou el paper del Context en l’aprenentatge, i la necessitat d’un aprenentatge actiu basat en la resolució de conflictes.
Domenech Casal, Jordi +3 more
core +2 more sources
Advanced Materials, EarlyView.Ball‐milling Cu‐based metallic glasses with ceria creates a unique nanostructure where metallic glass particles are wrapped by CeO2 nanoparticles. The intimate integration triggers copper state reorganization during reaction and aging, boosting CO oxidation and COPrOx activity.
Maahin Mirzay‐Shahim +17 more
wiley +1 more source
Aprender a justificar científicamente a partir del estudio del origen de los seres vivos
Enseñanza de las Ciencias, 2015 Este trabajo presenta una investigación en relación al aprendizaje de las ciencias a partir de la escritura de textos justificativos sobre el origen de los seres vivos con alumnos de 14 años.
Enric Custodio Fitó +2 more
doaj
A Functional 2D Carbon Allotrope Combining Nanoporous Graphene and Biphenylene Segments
Advanced Materials, EarlyView.The synthesis of a novel nanoporous graphene (NPG) is reported with biphenylene segments via thermal fusion of 12‐armchair porous graphene nanoribbons grown on gold surfaces. Characterization using STM, AFM, and DFT reveals low‐defect semiconducting behaviour and tunable band gaps.
Paula Angulo‐Portugal +14 more
wiley +1 more source