Results 161 to 170 of about 1,141,061 (327)

In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts

Advanced Materials, EarlyView.
An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea, Jordan Santiago Martinez, M. Asunción Molina, Jaime Mazarío, Lucy Costley‐Wood, Christian Cerezo‐Navarrete, Carlo Marini, Eduardo Villalobos‐Portillo, Andrew M. Beale, Pascual Oña‐Burgos   +9 more
wiley   +1 more source

Desenvolvimento, avaliação e metodologia de utilização para uma webquest da área de Ciências da Natureza [PDF]

, 2006
Esta comunicação pretende trazer para a discussão novas formas de utilização educativa das tecnologias da informação e comunicação, neste caso o uso das tecnologias de m-learning para acesso a uma webquest.
Alexandre, Dulclerci Sternadt, Bottentuit Junior, João Batista, Coutinho, Clara Pereira   +2 more
core  

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

Advanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia, Rogelio Ortigosa, Jesús Martínez‐Frutos, Daniel Garcia‐Gonzalez   +3 more
wiley   +1 more source

O MOVIMENTO SINDICAL DOCENTE, EM PORTUGAL, NAS DÉCADAS DE 70 E 80. DOS GRUPOS DE ESTUDO DO PESSOAL DOCENTE DO ENSINO SECUNDÁRIO À AFIRMAÇÃO DOS SINDICATOS DE PROFESSORES [PDF]

, 2006
Universidade Lusófona de Humanidades e Tecnologias ...
Tavares, Manuel
core  

Toward a Consensus Characterization Protocol for Organic Thermoelectrics

Advanced Materials, EarlyView.
We advocate a common consensus on accurate and standardized reporting of performance metrics in the field of organic thermoelectrics. We summarize prevalent issues in the literature and propose a pre‐submission checklist to support the publication of reproducible results.
Bernhard Dörling, Ian E. Jacobs, Irene Brunetti, Nathan James Pataki, Shannon K. Yee, Dorothea Scheunemann, Keehoon Kang, Guangzheng Zuo, Juan Sebastián Reparaz, Takao Mori, Michael L. Chabinyc, Christian Müller, Mario Caironi, Martijn Kemerink, Mariano Campoy‐Quiles   +14 more
wiley   +1 more source

Analysis of Interaction Tools and Communication in Virtual Environment of Learning From The Bakhtin Contributions

Educação: Teoria e Prática, 2009
With the distance education, it is transferred to reflect it regarding the interaction mediated for technological tools in virtual environment. By means of the Bakhtin referencial, it is argued interaction in Chats, Foruns and Painel of Opinions of a ...
Fabio Scorsolini-Comin, David Forli Inocente, Alberto Borges Matias   +2 more
doaj  

Unidade de Referência Tecnológica em iLPF como ferramenta de transferência de tecnologia para recuperação de pastagem degradada em Porto Velho, Rondônia. [PDF]

, 2014
O sucesso dos sistemas iLPF está relacionado com a escolha de tecnologias apropriadas para as diferentes ecorregiões. A Embrapa e parceiros vêm desenvolvendo tecnologias correlatas ao iLPF que apresentam vantagens técnicas e financeiras em relação ...
BOTELHO, F. J. E., CIPRIANI, H. N., GODINHO, V. de P. C., MARCOLAN, A. L., PASSOS, A. M. A. dos, TOWNSEND, C. R., UTUMI, M. M.   +6 more
core  

Bio‐Inspired Hierarchical Nanoreactor With Hetero‐Coordinated Fe–P–Co Bridges for Whole‐Pathway‐Regulated Electrocatalytic Oxygen Reduction

Advanced Materials, EarlyView.
A bioinspired Co‐doped Fe2P on N‐doped carbon with a hierarchical eucalyptus‐like nanoarchitecture is engineered to regulate oxygen across the entire electrochemical pathway, achieving a half‐wave potential of 0.938 V vs. RHE, sustaining 373 h of discharge in Al‐air batteries, and delivering an energy density of 3487 Wh/kg.
Qiaoling Xu, Lei Zhang, Xiayu Li, Weihang Xu, Linyi Ren, Mai Xu, Yingtang Zhou, Hermenegildo Garcia   +7 more
wiley   +1 more source

A sociedade da informação. A criança com deficiência e as novas tecnologias [PDF]

, 2006
Neste artigo, pretende-se reflectir acerca do emergir de Novas Tecnologias da Informação e Comunicação, que promovem um novo paradigma de sociedade baseada na informação e no conhecimento.
Pestana, Ilda Cunha, Silva, Carlos Fernandes da   +1 more
core  

Membrane Semi‐Permeability and Ion Selectivity in Chemiosmosis: Open Systems Volume Dependence of Electrolyte Chemistry

Advanced Materials Interfaces, EarlyView.
Very small cellular compartments can break electroneutrality and harness proton gradients without active transport structures, whereas larger volumes cannot, underscoring why life's critical energy processes are confined in microscopic spaces. ABSTRACT The effect of pH changes in external ionic solutions on liposomes entrapping non‐permeable weak acid ...
Josep M. Ribó, Isabel Herreros, David Hochberg, Federico Morán, Michael Stich   +4 more
wiley   +1 more source