Results 41 to 50 of about 1,923,542 (240)

POM‐Based Water Splitting Catalyst Under Acid Conditions Driven by Its Assembly on Carbon Nanotubes

open access: yesAdvanced Materials, EarlyView.
A newly‐engineered POM‐based electrocatalyst incorporating non‐innocent counter cations exhibits fast kinetics for either the OER or HER under strongly acidic conditions (1 m H2SO4), depending on whether it is assembled on carbon nanotubes (1@CNT) or physically mixed with them (1/CNT). In water‐splitting tests using a two‐electrode setup, these systems
Eugenia P. Quirós‐Díez   +8 more
wiley   +1 more source

LA TERZA DIMENSIONE IN ARCHEOLOGIA

open access: yesArcheomatica, 2016
With the arrival of the “Digital Age” and new technologies, modern archeology started to deal with the concept of 3-Dimension. Educational text books on archaeological methodology still tend to classify, however, the third dimension primarily as a ...
Stefano Calò
doaj   +2 more sources

Do lugar de produção/recolha de coleções documentais do CE-DOHS: proposta para uma reconstrução com aplicação de recursos em modelagem 3D

open access: yesLaborHistórico, 2023
Este artigo apresenta uma proposta de reconstrução, em modelagem 3D, de construções arquitetônicas demolidas ou que estão estruturalmente comprometidas, identificadas como alguns dos lugares de produção/recolha de coleções documentais do projeto Corpus ...
P. Batista   +3 more
semanticscholar   +1 more source

Supersymmetry approach to nuclear-spin-polarization-induced quantum dot structure calculations

open access: yes, 2004
In nuclear-spin-polarization-induced quantum dots the electrons are confined through local nuclear spin polarization. The model electron confinement potential is time-dependent due to the nuclear spin diffusion and relaxation processes.
Adamowski   +45 more
core   +1 more source

A Cu‐Based Near‐IR Active MOF with an Ion‐Pair Guest Exhibiting Versatile and Selective Gas‐Solid Reactivity

open access: yesAdvanced Materials, EarlyView.
The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha   +10 more
wiley   +1 more source

Spartan Daily November 1, 2012 [PDF]

open access: yes, 2010
Volume 139, Issue 35https://scholarworks.sjsu.edu/spartandaily/1351/thumbnail ...
San Jose State University, School of Journalism and Mass Communications
core   +5 more sources

Ab initio calculations of the dynamical response of copper

open access: yes, 1999
The role of localized $d$-bands in the dynamical response of Cu is investigated, on the basis of {\em ab initio} pseudopotential calculations. The density-response function is evaluated in both the random-phase approximation (RPA) and a time-dependent ...
Campillo, I., Pitarke, J. M., Rubio, A.
core   +1 more source

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

open access: yesAdvanced 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   +9 more
wiley   +1 more source

Un algoritmo de corte de nubes de puntos para el procesamiento y copia de objetos 3D/A slicing algorithm of points cloud for processing and copy of 3D objects

open access: yesProspectiva, 2018
El propósito de la reconstrucción tridimensional es convertir una gran cantidad de datos o puntos, en un modelo en la memoria del computador, manteniendo sus características físicas de volumen y forma, para llevarlo posteriormente a una figura real por ...
Mario Mercado Coronado   +3 more
doaj   +1 more source

PROPOSTA PEDAGÓGICA PARA INSERÇÃO DE UMA “CULTURA MAKER ACESSÍVEL” VISANDO ADEQUAÇÃO DE ESCOLAS ESTADUAIS AO NOVO ENSINO MÉDIO

open access: yesRevista Foco, 2023
Durante anos, a aprendizagem das Ciências naturais foi questionada, sendo a realização de experimentos, apontada como uma excelente ferramenta para que o aluno possa estabelecer a indissociável relação entre teoria e prática.
A. Souza
semanticscholar   +1 more source

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