An Over-Actuated Hexacopter Tilt-Rotor UAV Prototype for Agriculture of Precision: Modeling and Control.

This paper focuses on the modeling, control, and simulation of an over-actuated hexacopter tilt-rotor (HTR). This configuration implies that two of the six actuators are independently tilted using servomotors, which provide high maneuverability and reliability. This approach is predicted to maintain zero pitch throughout the trajectory and is expected to improve the aircraft's steering accuracy.

Machinability and surface integrity analysis of Ti-17 alloy using WEDC for advanced aero-engine application.

Recent advancements in aerospace industry demand intricate aero-engine parts, leading to the increased use of titanium alloys, particularly Ti-17, due to its high strength, thermal stability, and corrosion resistance. However, its low thermal conductivity and tool wear tendency pose significant machining challenges, impacting surface integrity, fatigue life, and overall component performance. This study investigates the Wire Electrical Discharge Cutting (WEDC) process, revealing that the mechanism behind improved surface integrity lies in the controlled thermal input, which minimizes phase transformations and reduces residual stresses.

Techno-functionality of jack bean (Canavalia ensiformis) protein concentrate: a comparative study with soy and pea proteins.

Background: With the growing human awareness of the environmental and animal stress caused by the meat industry, the consumption of plant-based products has expanded. Plant proteins have gained market prominence due to their sustainable origin, economic value and health benefits. Well-established plant proteins in the market, such as those of soy and pea, have various applications as ingredients in the food industry.

Factors associated with vaccination coverage in children up to 15 months old, born in 2017-2018 in the city of Natal/RN, Brazil: a population-based survey.

Objective: To estimate vaccination coverage and analyze factors associated with full vaccination among children up to 15 months old in the city of Natal-RN, Brazil.

Methods: Population-based survey with data recorded on children's vaccination cards and interviews conducted in 2020 and 2021. Analysis of factors associated with complete vaccination was performed by calculating prevalence ratios (PR) and 95% confidence intervals (95%CI) using Poisson regression.