Results 131 to 140 of about 3,488,373 (301)

Early Cambrian U-Pb zircon age and Hf-isotope data from the Guasayán pluton, Sierras Pampeanas, Argentina: implications for the northwestern boundary of the Pampean arc [PDF]

, 2016
An Early Cambrian pluton, known as the Guasayán pluton, has been identified in the central area of Sierra de Guasayán, northwestern Argentina. A U?Pb zircon Concordia age of 533 ± 4 Ma was obtained by LA-MC-ICP-MS and represents the first report of ...
Alasino, Pablo Horacio, Baldo, Edgardo Gaspar Agustín, Basei, Miguel A. S., da Costa Campos Neto, Mario, Dahlquist, Juan Andrés, Rapela, Carlos Washington, Uran, Gimena Mariel, Verdecchia, Sebastián Osvaldo, Zandomeni, Priscila Soledad   +8 more
core   +2 more sources

Record Energy Storage Performance Metrics in Ferroelectric Hafnia‐Based Films through Heterostructure Design

Advanced Functional Materials, EarlyView.
Dielectric capacitors typically struggle to achieve both high energy storage density and high efficiency at applied voltages below 10 V. Here, we address this challenge by introducing a novel hybrid fluorite/perovskite heterostructure design that combines ultra‐high recoverable energy storage density with efficient energy release (Uf ≈ 1016 J/cm3), at ...
Ampattu R. Jayakrishnan, Nuno Estrócio, Inês Silva, Raluca Negrea, Marian C. Istrate, Koppole C. Sekhar, Luís Marques, Judith L. MacManus‐Driscoll, Ignasi Fina, Florencio Sánchez, José P. B. Silva   +10 more
wiley   +1 more source

Enseñanza de las ciencias en aulas inclusivas

Revista Científica, 2011
Esta investigación se realiza con el fin de reflexionar y de aportar al proceso de enseñanza-aprendizaje de aquellos estudiantes con déficit cognitivo (DC) incluidos en las aulas regulares.
María Andrea Hernández Ballesteros, Rusby Malagon, Germán Bautista   +2 more
doaj   +1 more source

Sustained exocytosis after action potential-like stimulation at low frequencies in mouse chromaffin cells depends on a dynamin-dependent fast endocytotic process [PDF]

, 2016
Under basal conditions the action potential firing rate of adrenal chromaffin cells is lower than 0.5 Hz. The maintenance of the secretory response at such frequencies requires a continuous replenishment of releasable vesicles.
Alvarez, Yanina Daniela, Bayonés, Lucas, Belingheri, Ana Verónica, Cárdenas, Ana M., González-Jamett, Arlek M., Marengo, Fernando Diego, Montenegro, Mauricio Norman, Moya Diaz, José Abelino   +7 more
core   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

Advanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim, Gayoung Seo, Seong Yeon Park, Juwon Jang, Yunho Ahn, Samiksha Mukesh Jain, Samrat Das Adhikari, Harumi Correa‐Leiva, Ignacio Utreras‐Asenjo, Oscar A. Douglas‐Gallardo, Carina Pareja‐Rivera, Kayoung Cho, Byeongsung Kim, Jhonatan Rodriguez‐Pereira, Eunseo Choi, JaeHong Park, Jin Ho Bang, Danilo H. Jara‐Quinteros, Sixto Giménez, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes, Iván Mora‐Seró   +21 more
wiley   +1 more source

La influencia de las emociones en la elección de carreras universitarias

INFAD, 2017
Con el fin de conocer las emociones que experimentaron los estudiantes de Educación Secundaria en el aprendizaje de diferentes asignaturas científicas y cómo ha podido influir en la posterior elección de carreras universitarias, realizamos una ...
Ana Belén Borrachero Cortés, María Antonia Dávila Acedo, Diego Airado Rodríguez   +2 more
doaj   +1 more source

Pismis 20: one or two clusters? [PDF]

, 2003
We present UBVRI polarimetric observations of stars in the direction of the open cluster Pismis 20 and WR 67. It is found that the observed members segregate polarimetrically into two groups, with different associated mean Pmax (4.31 and 6.08 ...
Marraco, Hugo Gustavo, Orsatti, Ana Maria, Vega, Ema Irene   +2 more
core   +2 more sources

Fast Track to the Overdoped Regime of Superconducting YBa2Cu3O7‐δ Thin Films via Electrochemical Oxidation

Advanced Functional Materials, EarlyView.
Overdoping high temperature superconductors, such as YBa2Cu3O7‐δ (YBCO), is expected to maxime the critical current density by optimising the condensation energy for a given defect landscape, providing new thrust for the development of fusion enabling coated conductors. Here, precise oxygen control is achieved via an electrochemical method allowing for
Alexander Stangl, Aiswarya Kethamkuzhi, Hervé Roussel, Cornelia Pop, Xavier Obradors, Teresa Puig, Mónica Burriel, Arnaud Badel   +7 more
wiley   +1 more source

Métodos estadísticos utilizados en las ciencias del movimiento humano

Revista Educación, 2004
El propósito de este estudio fue describir los métodos estadísticos más utilizados en una revista del área de las ciencias del movimiento humano indexada en el Science Citation Index, la cual obtuvo en el año 1999 un factor de impacto 2.110.
José Moncada Jiménez
doaj  

Dual‐Inductive and Programmable Switching: A New Paradigm in Ionic Interface‐Controlled Perovskite Memory

Advanced Functional Materials, EarlyView.
A fully programmable, dual‐inductive switchable halide perovskite memristor is demonstrated through precise BDAI2‐mediated interface engineering. This ion‐modulating layer suppresses stochastic filamentary growth, enabling stable, non‐filamentary switching via dynamic barrier modulation.
So‐Yeon Kim, Juan Bisquert
wiley   +1 more source