Publications by authors named "J Quadros"
Retrospective paired cohort study comparing internal fixation for undisplaced versus hemiarthroplasty for displaced femoral neck fracture in the elderly.
Injury
October 2024
Article Synopsis
- The study compares the effectiveness of internal fixation (IF) and hemiarthroplasty (HA) in treating non-displaced femoral neck fractures in patients over 65, focusing on surgical aggression, mortality, complications, and walking recovery after one year.
- Results indicate that IF leads to lower surgical aggression with shorter surgical times and less need for blood transfusion; however, HA has a significantly higher in-hospital mortality rate.
- Overall, while there are no major differences in long-term mortality or medical complications between the two methods, specific surgical complications vary, with higher rates of dislocations and periprosthetic fractures in HA, and fixation failures in IF.
The present work investigates the mechanical properties of a composite material composed of multi-walled carbon nanotubes (MWCNTs), nano-aluminum powder (NAP), and glass fibers (GF) for five different compositions. The study further investigated how MWCNTs contribute to maintaining the mechanical properties of nanocomposites when exposed to elevated temperatures, up to 180 °C. The evaluation of impact strength revealed that the nanocomposite, composed of 2 % MWCNTs, 15 % NAP, and 10 % GF, demonstrated the greatest impact strength.
View Article and Find Full Text PDFMolten salts are highly effective as a quenching medium for austempering and martempering processes, enabling precise control of cooling rates to achieve the desired microstructures and mechanical characteristics in steel components. One such promising molten salt is a multicomponent Ca (NO)-KNO molten salt. The current work explores the cooling severity of molten Ca (NO)-KNO mixtures, which are commonly used for such purposes.
View Article and Find Full Text PDFThis study aims to identify the Popular Health Surveillance practices in Brazil, described in the scientific literature. A scoping review was carried out in the LILACS, MEDLINE, MEDCARIB, PAHO-IRIS, WHOLIS, and Scopus databases from the CAPES Periodical Portal in May 2022. Studies that clearly addressed community/population protagonism in a health surveillance experience were included in the review, with a total of 6 studies.
View Article and Find Full Text PDFObjective: To understand the experience of reproductive planning and pregnancy for HIV serodiscordant couples.
Method: Qualitative study, with phenomenological approach, theoretical-philosophical-methodological framework of Martin Heidegger. The field stage took place in a reference service in the care for people living with HIV, in southern Brazil.