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Characterization of sildenafil citrate tablets of different sources by near infrared chemical imaging and chemometric tools

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Characterization of sildenafil citrate tablets of different sources by near infrared chemical imaging and chemometric tools

Sabin, Guilherme P. et al · Elsevier · 2013 · ISSN 0731-7085

The chemical imaging technique by near infrared spectroscopy was applied for characterization of formulations in tablets of sildenafil citrate of six different sources. Five formulations were provided by Brazilian Federa...

Idioma eng

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Comparative performance of Ca2Fe2O5 and Fe2O3 oxygen carriers in lignin-based chemical looping fuel cells

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Comparative performance of Ca2Fe2O5 and Fe2O3 oxygen carriers in lignin-based chemical looping fuel cells

Atsuhiro Sumiya et al · Elsevier · 2026 · ISSN 1452-3981

Recent research has developed systems for the chemical looping (CL) gasification of biomass using iron (Fe)-based metal oxides as oxygen carriers (OCs). The present study constructed a CL fuel cell utilizing lignosulfona...

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Multiscale mechanisms of reactive oxygen species-induced oxidation of SBS-modified asphalt: From physical oxidation diffusion to chemical oxidation reaction

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Multiscale mechanisms of reactive oxygen species-induced oxidation of SBS-modified asphalt: From physical oxidation diffusion to chemical oxidation reaction

Mingjun Hu et al · Elsevier · 2026 · ISSN 2214-5095

Reactive oxygen species (ROS, ·OH, ·OOH, and O₂) are ubiquitous in urban environments and may significantly accelerate asphalt pavement aging, yet their interactions with asphalt components remain poorly understood. ...

LCC LCC:Materials of engineering and construction. Mechanics of materialsIdioma eng

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Geometric accuracy of surface high-dose rate brachytherapy applicator and catheters identified using Dixon volumetric interpolated breath-hold examination magnetic resonance images

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Geometric accuracy of surface high-dose rate brachytherapy applicator and catheters identified using Dixon volumetric interpolated breath-hold examination magnetic resonance images

Evangelia Kaza et al · Elsevier · 2026 · ISSN 2405-6316

Background and purpose: Volumetric Interpolated Breath-hold Examination (VIBE) magnetic resonance imaging (MRI) can depict flap applicators of High-Dose-Rate (HDR) surface brachytherapy. Evaluating criteria for catheter ...

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Mass Transfer Limitations in Slurry Photocatalytic Reactors: Experimental Validation

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Mass Transfer Limitations in Slurry Photocatalytic Reactors: Experimental Validation

Ballari, Maria de Los Milagros et al · Elsevier · 2010 · ISSN 4931-4942

In the present work the existente of mass transfer limitations in slurry, photocatalytic reactors is studied. Experimental validation is made in a flat plate reactor that is part of a recycling system. The reactor is des...

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