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Ruth Lahoz,Eva Natividad,Álvaro Mayoral,Christian Rentenberger,Daniel Díaz-Fernández,Eduardo J. Félix,Leonardo Soriano,Wolfgang Kautek,Oscar Bomati-Miguel 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.81 No.-
Liquid-Assisted Pulsed Laser Ablation (LA-PLA) is a promising top-down method to directly synthesizecolloidal dispersions of nanoparticles in a eco-friendly manner. However, the role of LA-PLA synthesisparameters is not yet fully agreed. This work seeks to optimize the production of nanoscale zero-valentiron (nZVI) particles suitable for biomedical or environmental applications using nanosecond LA-PLA oniron targets with different ablation media, laser and target scanning parameters. The use of alcohols assolvents produces iron-iron oxide core-shell nanoparticles with amorphous cores, except for a smallcrystalline fraction corresponding to the biggest core sizes. Decreasing carbon chain length andcomplexity leads to a thinning of the carbonaceous material coatings and an increase of the colloidalstability and the nanoparticle productivity. Moreover, a decrease of solvent density and surface tensionallows obtaining reduced sizes and polydispersity values. Among, laser and scanning parameters, thepulse accumulation per spot displayed a clear effect in boosting size and productivity. As main outcome,aqueous dispersions with suitable colloidal properties are obtained, either by transferring to water ofoptimized nZVI particles produced in ethanol, or by direct formation of nZVI particles and in situ coatingwith hydrophilic molecules in aqueous solutions of these molecules.
Surgical Management of an Infected Popliteal Artery Aneurysm
Juan Carlos Moy Petersen,Ignacio Hernández-Lahoz Ortiz,Delfin Couto Mallón,Juan José Vidal Insua,Jose Raul Garcia Casas 대한혈관외과학회 2014 Vascular Specialist International Vol.30 No.3
Infective aneurysms are rare due to the antimicrobial advances and the early treatment of systemic infections. They represent a diagnostic and therapeutic challenge. The treatment for these cases is generally characterised by excision and reconstruction using an autologous vein graft. We describe a case of a 66-year-old man who presented an 8 cm infected popliteal aneurysm where urgent surgical approach was performed. The vascular continuity was restored with a basilic vein. Clinical follow-up showed no signs of recurrent infection and patent bypass without any anastomotic pseudoaneurysm after a year.