Results 71 to 80 of about 85,413 (240)

Local waiting time fluctuations along a randomly pinned crack front [PDF]

open access: yes, 2005
The propagation of an interfacial crack along a heterogeneous weak plane of a transparent Plexiglas block is followed using a high resolution fast camera.
Måløy, Knut Jørgen   +3 more
core   +3 more sources

In situ Generation of Fluoride Catalysts for CO2‐to‐Formic Acid Conversion With Silicon Reducing Agent

open access: yesChemistry – A European Journal, EarlyView.
Reductive conversion of CO2 to formic acid with waste silicon reducing agent catalyzed by in situ generation of active fluoride species from a tertiary amine, protonic acid, and simple inorganic fluoride salt, such as KF and NaF. ABSTRACT The activation and catalytic reduction of carbon dioxide (CO2) using silicon‐based reducing agents is an important ...
S. M. A. Hakim Siddiki   +6 more
wiley   +1 more source

Jarosite versus Soluble Iron-Sulfate Formation and Their Role in Acid Mine Drainage Formation at the Pan de Azúcar Mine Tailings (Zn-Pb-Ag), NW Argentina [PDF]

open access: yes, 2014
Secondary jarosite and water-soluble iron-sulfate minerals control the composition of acid mine waters formed by the oxidation of sulfide in tailings impoundments at the (Zn-Pb-Ag) Pan de Azúcar mine located in the Pozuelos Lagoon Basin (semi-arid ...
Alicia Kirschbaum   +5 more
core   +3 more sources

In‐situ asphaltene capture with iron oxide nanoparticles in steam‐assisted gravity drainage (SAGD) for improved recovery and partial upgrading of bitumen

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Key improvements obtained by incorporating nanoparticles into a lab‐scale SAGD process configuration. The bar plots show enhanced oil recovery, reduced viscosity, and increased asphaltene adsorption in nanoparticle‐assisted scenarios compared with conventional SAGD.
Luis Prada   +6 more
wiley   +1 more source

Criminal Liability of Facebook Reaction Buttons in Environment of the Slovak Republic as a Form of Hate Speech [PDF]

open access: yesSocietas et Iurisprudentia, 2016
The presented paper is focused on analysing the issue of the Facebook reaction buttons as a form of hate speech. Pressing these buttons can spread hateful content through Facebook and disseminate extremist ideas.
Ivan Smieško
doaj  

Review of Noterapion Kissinger from Chile and Argentina (Coleoptera: Apionidae) [PDF]

open access: yes, 2002
Descriptions and a key are provided for 7 South American species of Note rap ion Kissinger (2002) (type species Apion meorrhynchum Philippi and Philippi) including N. bruchi (Beguin-Billecocq), N. meorrhynchum (Philippi and Philippi), N.
Kissinger, David G.
core  

Characterization of SiGe thin films using a laboratory X-ray instrument [PDF]

open access: yes, 2013
The technique of reciprocal space mapping using X-rays is a recognized tool for the nondestructive characterization of epitaxial films. X-ray scattering from epitaxial Si0.4Ge0.6 films on Si(100) substrates using a laboratory X-ray source was ...
Alex Ulyanenkov   +16 more
core   +2 more sources

Multifunctional Phosphorus Doping: Integrating Enhanced Ionic/Electronic Transport and Interface Optimization for Silicon Oxycarbide Anodes

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Phosphorus doping introduced additional electrons into silicon oxycarbide (SiOC) materials, facilitating fast ion/electron transport. It also induced the formation of more stable and Li‐ion conductive interfaces, contributing to the improvement of electrochemical performance.
Yingying Shen   +9 more
wiley   +1 more source

The Basque Issue and the Spanish Rule of Law: Report on the UPV/EHU “Ultima Ratio” Seminar

open access: yesOñati Socio-Legal Series, 2012
This paper resumes the seminar organised by the International Institute for the Sociology of Law, the University of the Basque Country and the Basque Studies Society too in San Sebastian Campus and Oñati during the 2nd and 3rd of February 2012, with the
Xabier Ezeizabarrena
doaj  

Discusiones en torno al delito de inasistencia alimentaria en Colombia [PDF]

open access: yes, 2019
Artículo de investigaciónAl ser el delito de inasistencia alimentaria una herramienta relevante para la protección de derechos y del bien jurídico de la familia; y bajo el entendido de que el derecho penal debe regirse por el principio de mínima ...
Acosta-Rojas, Karen Jelitza
core  

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