Past Issue

Characterization of the surface layer modified in ti6-al7-nb alloys by plasma nitriding using cathodic cage

Using titanium as the base metal of biomaterials has gained attention due to its excellent mechanical properties, biocompatibility, and resistance to corrosion and wear. In this research, Ti6-Al7-Nb (wt%) alloy has been superficially modified by cationic cathode plasma nitration (CCN) in order to improve the pre-existing biocompatible characteristics in the alloy. Four treatment conditions and a standard sample, for comparative purposes, were chosen. Nitriding was implemented using a cathodic cage technique at a different time and temperature conditions, and at constant pressure.

Heat transfer in the area

O objetivo dessa Temperature control in computers, mobile devices and other devices is important for their stability. The finite differences method is used to calculate the temperatures in fixed nodes of devices, in the absence of internal heat dissipation and certain boundary conditions of the inner walls.

Refinement of the femoral puncture technique the secret: do not transfix the artery!

Background: The femoral artery has been the standard access route for several decades. However, this access route has been associated with increased rates of vascular complications compared to the radial artery access route. The objectives of this study were to describe vascular complications at femoral access site after puncture without transfixation of the artery. Methods: This a was real-world registry (from January 2017 to August 2019) that enrolled 1000 patients (mean age 56±10years) with stable CAD and clinical indication of coronary angiography.

Síndrome de burnout e o trabalho feminino no brasil burnout syndrome and women's work in Brazil

O objetivo da presente pesquisa é analisar a relação do Burnout no trabalho feminino no âmbito da pandemia no Brasil. A pandemia tem feito as pessoas trabalharem mais, seja presencial ou remotamente, e isso, somado ao medo do desemprego, da covid-19 e da cobrança por produtividade, pode levar à exaustão mental. Neste momento, em que as condições de trabalho especiais que a pandemia tem nos obrigando faz com que essas sensações, esses sintomas, esse Burnout aumente.

Conflitos éticos na tomada de decisão dos enfermeiros no acolhimento com classificação de risco às gestantes

O Acolhimento com Classificação de Risco às gestantes necessita de uma atenção qualificada as particularidades destas e requer uma escuta qualificada e investigações minuciosas às queixas apresentadas, assim, o profissional mais indicado à função é o enfermeiro, uma vez que sua formação é extremamente interdisciplinar. Objetivo: compreender os conflitos éticos na tomada de decisão dos enfermeiros no acolhimento com classificação de risco às gestantes.

Performance of commercial cultivars of passiflora edulis sims in Cáceres, Mato Grosso, Brazil

Brazil is the largest producer of passion fruit in the world. However, production in the state of Mato Grosso is one of the lowest in the country and this is due mainly to the lack of genetically enhanced cultivars suitable for growing in the region. This study aimed to compare the performance of five commercial cultivars of Passiflora edulis Sims grown under the specific environmental conditions of Cáceres, a leading fruit production hub in Mato Grosso. The experiment was of a randomized block design with a 3 x 3 m configuration and comprised five P.

A tool for prioritizing distribution system equipment renewal plans based on multi-criteria analysis and estimation of remaining useful life

This work presents a tool developed to assist decision making for maintenance and replacement of assets based on the determination of priority equipment in a renovation plan. Different data sources and multi-criteria evaluation were used in an integrated way, focusing on individual distribution substation equipment.

Environmental management and machine learning: a case study in a thermoelectric power plant in Northeastern Brazil

Many activities can cause significant environmental impacts on the environment. A large part of the thermoelectric plants uses fossil fuels to generate energy, but they can also release greenhouse gases into the environment. Given this scenario, it is essential to have an effective environmental management system for monitoring risks within a plant.