Results 41 to 50 of about 262,778 (317)

Harmonizing the Pyrene and Ether Groups in Covalent Triazine Polymers for Highly Effective H2O2 Photosynthesis via One‐Step Two‐Electron Oxygen Reduction

open access: yesAdvanced Functional Materials, EarlyView.
The pyrene and ether groups are incorporated into the covalent triazine polymer (CTP) structure. The synergistic effect of the two functional groups endows CTP with better electron transfer, light absorption, and oxygen activation properties. An impressive apparent quantum yield (13.2% @420 nm) and a remarkable solar‐to‐chemical conversion efficiency ...
Chong Wang   +10 more
wiley   +1 more source

Endocannabinoid signaling is critical for habit formation

open access: yesFrontiers in Integrative Neuroscience, 2007
Extended training can induce a shift in behavioral control from goal-directed actions, which are governed by action-outcome contingencies and sensitive to change in the expected value of the outcome, to habits which are less dependent on action-outcome ...
Monica R. F Hilário   +3 more
doaj   +1 more source

Habits without Values [PDF]

open access: yesPsychological Review, 2016
AbstractHabits form a crucial component of behavior. In recent years, key computational models have conceptualized habits as arising from model-free reinforcement learning (RL) mechanisms, which typically select between available actions based on the future value expected to result from each.
Miller, Kevin J.   +2 more
openaire   +5 more sources

Precursor Mineral Phases of Forming Mollusk Shell Nacre: A Study of Hydrated Samples

open access: yesAdvanced Functional Materials, EarlyView.
Mineral, organic phase, and water are the essential components in mollusk shell nacre formation. Their interplay is not well understood, because the hydrated material is difficult to observe at high resolution, under close to native conditions. Forming nacre is studied using environmental and cryo‐electron microscopy and hydrated ACC phases, together ...
Anna Kozell   +4 more
wiley   +1 more source

Composición, origen y valor de conservación de la Ictiofauna del Río San Pedro (Cuenca del Río Valdivia, Chile) Composition, origin and conservation value of the San Pedro River Ichthyofauna (Valdivia River Basin, Chile)

open access: yesGayana, 2012
Basado en muestreos de tres años consecutivos y revisión de literatura, describimos la composición, singularidad y estado de conservación de la ictiofauna del río San Pedro, en la cuenca del río Valdivia.
Evelyn Habit, Pedro Victoriano
doaj  

High on habits [PDF]

open access: yesfrontiers in Neuroscience, 2008
The neural circuits involved in learning and executing goal-directed actions, which are governed by action-outcome contingencies and sensitive to changes in the expected value of the outcome, have been shown to be different from those mediating habits, which are less dependent on action-outcome relations and changes in outcome value. Extended training,
Hilário, Monica R. F., Costa, Rui M.
openaire   +3 more sources

From Waste to Value: Conversion of Calcium Sulfate to Vaterite via Carbon Capture and Storage

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a new concept for carbon management that relies on the carbonation of industrial gypsum waste and yields phase‐pure vaterite at ambient conditions without any additives. The obtained vaterite is further shown to be a reactive material that develops compressive strength in aqueous suspensions like conventional cements.
Carlos Pimentel   +4 more
wiley   +1 more source

Fundamento y aproximación Metodológica del Estudio de peces del Río San Pedro Basis and Methodological Approach for the Study of the San Pedro River Fish Fauna

open access: yesGayana, 2012
El río San Pedro corresponde al sistema fluvial que desagua la cadena de ocho lagos andinos de la cuenca del río Valdivia (Región de los Ríos). Este sistema recorre 40 km entre el desagüe del lago Riñihue y su confluencia con el río Collileufu, donde ...
Evelyn Habit, Oscar Parra
doaj  

Micro and Nanostructural Diversity of Lizard Osteoderm Capping Tissue in Relation to Mechanical Performance

open access: yesAdvanced Functional Materials, EarlyView.
This study shows that lizard osteoderm capping tissue is a hyper‐mineralized hydroxyapatite layer consistently covering the superficial osteoderm surface in those species studied here, yet it varies greatly in morphology, nanostructure, and mechanical performance across species.
Adrian Rodriguez‐Palomo   +10 more
wiley   +1 more source

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