Results 71 to 80 of about 236,170 (274)

A generic framework for the development of standardised learning objects within the discipline of construction management [PDF]

, 2007
E-learning has occurred in the academic world in different forms since the early 1990s. Its use varies from interactive multimedia tools and simulation environments to static resources within learning management systems. E-learning tools and environments
Ahmed, V, Aouad, GF, Pathmeswaran, R
core   +1 more source

Modulating Metal–Oxygen Bond Energy by Valence State Engineering in 2D High Entropy Oxides for Enhanced Water Electrolysis

Carbon Energy, EarlyView.
The competitive redox equilibrium among different elements in 2D HEO is regulated through temperature‐controlled pyrolysis of 2D HEHO, obtaining 2D HEO with a continuously adjustable valence state of Fe, Ni, Mo, Ru, and V elements, which modulate the strength of the metal–O bond and activate the LOM‐OVSM for OER.
Tian Wu, Shasha Gao, Runlin Ma, Rui Zhang, Chaolong Wang, Dong Guo, Die Lu, Zhihong Tian, Menggai Jiao, Zhen Zhou, Gonglei Shao   +10 more
wiley   +1 more source

The Ligament of Marshall: Far From Vestigial!

Annals of Thoracic Surgery Short Reports
Background: The ligament of Marshall (LOM) is a vestigial fold of the left atrium that contains the remnant left cardinal vein, muscle bundles, and nerve fibers.
Raghav Chandra, MD, Jasmina Ehab, MD, Madhuri Nagaraj, MD, Suresh Keshavamurthy, MD   +3 more
doaj   +1 more source

Trichodina nigra Lom 1960

, 2007
Trichodina nigra Lom, 1960 (Figs. 1D, 3D) Host: Carassius auratus. Location: Gills. Prevalence: Out of 16 fishes examined, one was infected (6.3 %). Locality: Chongqing, China (29º5' N, 106º5' E). Date of sampling: February, 2004. Description. Large-size, body diameter 65.0–73.0µm (69.6 ± 4.2); diameter of adhesive disc 49.0– 65.0µm (56.3 ± 3.4 ...
Tang, Fahui, Zhao, Yuanjun, Tao, Yanfei
openaire   +1 more source

Interfacial Ru–O–W Orbital Coupling Enables Lattice Oxygen Stabilization for Enhanced Acidic OER

Carbon Energy, EarlyView.
A RuO2/WO3 electrocatalyst with strong interfacial Ru–O–W bonds exhibits optimized Ru–O interactions, enhancing intrinsic activity and stability for acidic OER. The WO3 support modulates the electronic structure of RuO2 and promotes oxo‐intermediate deprotonation, delivering a low overpotential of 203 mV at 10 mA cm−2 and sustained operation beyond 200 
Tongzhou Wang, Shoujian Duan, Junyu Pan, Jihong Li, Li Shao, Lei Shi, Yuhan Sun, Jingming Ran, Huaiyu Shao, Yida Deng   +9 more
wiley   +1 more source

PERSONALIZACIÓN DEL PROCESO DE APRENDIZAJE USANDO LEARNING OBJECTS REUTILIZABLES

RED. Revista de Educación a Distancia, 2005
En este artículo se describe el diseño de una plataforma de e-learning que integra el uso de learning objects (objetos de aprendizaje) reutilizables como elementos básicos para la construcción de itinerarios que permiten la personalización del proceso de
Julià Minguillón, Enric Mor, Francesc Santanach, Lourdes Guàrdia Ortiz   +3 more
doaj  

Judging by the Rules? The emergence of evaluation practices

Valuation Studies
How does evaluation work differently, and how do evaluation practices emerge, in different contexts? Drawing on a mixed-methods study of evaluation in figure skating and classical music, I discuss the divergent evaluative cultures in these settings ...
Stacy Lom
doaj   +1 more source

Iron and Nickel Substituted Perovskite Cobaltites for Sustainable Oxygen Evolving Anodes in Alkaline Environment

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Perovskite oxide catalysts with reduced Co content, substituted by Fe and Ni, are synthesized and studied for their activity in the oxygen evolution reaction in alkaline media. An increase in the intrinsic catalytic activity (obtained by the (RctCdl)−1 product) of the base material (Ba0.5Gd0.8La0.7Co2O6‐δ) is seen for an as high as 70 % substitution of
Henrik Petlund, Alaa Faid, Junjie Zhu, Anuj Pokle, Truls Norby, Svein Sunde, Athanasios Chatzitakis   +6 more
wiley   +1 more source

Low Power Resonant Optical Excitation of an Optomechanical Cavity

, 2010
We demonstrate the actuation of a double beam opto-mechanical cavity with a sinusoidally varying optical input power. We observe the driven mechanical motion with only 200 nW coupled to the optical cavity mode.
Altug, Arka Majumdar, Armand Rundquist, Eichenfield, Eichenfield, Eichenfield, Englund, Jelena Vučković, Kippenberg, Kippenberg, Kippenberg, Li, Li, Notomi, Pernice, Povinelli, Povinelli, Quan, Roels, Safavi-Naeini, Schliesser, Van Thourhout, Wiederhecker, Yiyang Gong   +23 more
core   +1 more source

A Redox‐Buffering System for Stabilizing the Lattice Oxygen Mechanism in CeO2/FeOOH Heterostructure Electrocatalysts for Highly Stable Anion Exchange Membrane Water Electrolyzers

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The CeO2/FeOOH heterostructure catalyst was synthesized via a facile co‐precipitation strategy. The work‐function disparity between CeO2 and FeOOH drives interfacial electron redistribution, thereby optimizing the OER pathway. Moreover, the interfacial Ce3+/Ce4+ couple establishes a “redox‐buffering system” that suppresses Fe dissolution and enhances ...
Daehyun Kim, Seunghwan Jo, Jeong In Jeon, Jung Inn Sohn, John Hong   +4 more
wiley   +1 more source