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Inés Gil Prados,Mónica Bellón del Amo,Rebeca Ruiz Román,Francisco Javier García Santos 대한내시경복강경외과학회 2020 Journal of Minimally Invasive Surgery Vol.23 No.4
After the declaration of the coronavirus disease 2019 (COVID-19) pandemic, gynecological surgery joins the readjustment process that this great global health crisis implies. In the light of current literature, the five steps towards its resilience are described as below; (1) Dynamic prioritization of surgical indications and reintroduction of elective surgeries: Diverse surgical prioritization lists are published including the most common gynecological pathologies. (2) Minimally invasive surgery through laparoscopy and robotic assistance: Some authors suggest a theoretical but unproven risk of viral transmission during these approaches because of the aerosol generation. These theories are opposed to the well-proven advantages of these approaches compared to open surgery. (3) Optimization of surgical procedures, according to the recommendations of different societies aimed at reducing the dispersion of aerosols and surgical smoke. (4) Clinical, epidemiological and microbiological screening of all patients awaiting prompt surgery: This screening should be adapted to the local alert state. (5) Protection through the reduction of number of persons present in the operating room, and the use of adapted personal protective equipment according to physical proximity to the patient.
Felipe Arias-González,Jesús del Val,Rafael Comesaña,Joaquín Penide,Fernando Lusquiños,Félix Quintero,Antonio Riveiro,Mohamed Boutinguiza,Francisco Javier Gil,Juan Pou 대한금속·재료학회 2018 METALS AND MATERIALS International Vol.24 No.1
In this paper, the microstructure and crystallographic texture of pure Ti thin walls generated by Additive Manufacturingbased on Laser Cladding (AMLC) are analyzed in depth. From the results obtained, it is possible to betterunderstand the AMLC process of pure titanium. The microstructure observed in the samples consists of large elongatedcolumnar prior β grains which have grown epitaxially from the substrate to the top, in parallel to the buildingdirection. Within the prior β grains, α-Ti lamellae and lamellar colonies are the result of cooling from above the β-transus temperature. This transformation follows the Burgers relationship and the result is a basket-weave microstructurewith a strong crystallographic texture. Finally, a thermal treatment is proposed to transform the microstructureof the as-deposited samples into an equiaxed microstructure of α-Ti grains.