Philosophical friendship between Brazil and Chile

One can expect a scientific journal to fulfill the purpose of disseminating research results, spreading works and new ideas and, now more than ever, franking space for the fruitful exchange among institutions under the dictum of the knowledge’s internationalization. Honoring its commitment as an academical philosophy journal, the present issue of the Aoristo - International Journal of Phenomenology, Hermeneutics and Metaphysics assumes the three afore mentioned missions, with emphasis on the last one

Amistad filosófica entre Chile y Brasil

Se espera que una revista científica cumpla la función de dar a conocer resultados de investigación, difundir escritos y nuevas ideas y, ahora más que antes, abrir espacios para un fructífero intercambio entre instituciones, bajo el lema de “internacionalización del conocimiento”. En honor a su compromiso como revista académica de filosofía, el presente número de Aoristo - International Journal of Phenomenology, Hermeneutics and Metaphysics, cumple con las tres misiones antes mencionadas, haciendo énfasis en la última.Se espera que una revista científica cumpla la función de dar a conocer resultados de investigación, difundir escritos y nuevas ideas y, ahora más que antes, abrir espacios para un fructífero intercambio entre instituciones, bajo el lema de “internacionalización del conocimiento”. En honor a su compromiso como revista académica de filosofía, el presente número de Aoristo - International Journal of Phenomenology, Hermeneutics and Metaphysics, cumple con las tres misiones antes mencionadas, haciendo énfasis en la última.Se espera que una revista científica cumpla la función de dar a conocer resultados de investigación, difundir escritos y nuevas ideas y, ahora más que antes, abrir espacios para un fructífero intercambio entre instituciones, bajo el lema de “internacionalización del conocimiento”. En honor a su compromiso como revista académica de filosofía, el presente número de Aoristo - International Journal of Phenomenology, Hermeneutics and Metaphysics, cumple con las tres misiones antes mencionadas, haciendo énfasis en la última

Amizade filosófica entre Brasil e Chile

De uma revista científica espera-se que cumpra a função de divulgar resultados de pesquisas, difundir trabalhos e novas ideias e, agora mais do que antes, franquear espaço para o frutífero intercâmbio entre instituições, sob o lema da internacionalização dos saberes. Honrando seu compromisso de periódico acadêmico de filosofia, o presente número de Aoristo - International Journal of Phenomenology, Hermeneutics and Metaphysics, atende às três mencionadas missões, fazendo ênfase na última

Amizade filosófica entre Brasil e Chile

De uma revista científica espera-se que cumpra a função de divulgar resultados de pesquisas, difundir trabalhos e novas ideias e, agora mais do que antes, franquear espaço para o frutífero intercâmbio entre instituições, sob o lema da internacionalização dos saberes. Honrando seu compromisso de periódico acadêmico de filosofia, o presente número de Aoristo - International Journal of Phenomenology, Hermeneutics and Metaphysics, atende às três mencionadas missões, fazendo ênfase na última

Operational feasibility and mobility outcome from eVTOL based on existing air infrastructure

This study aimed to assess the operational feasibility and air mobility outcomes of introducing Electric Vertical Take-Off and Landing (eVTOL) vehicles in São Paulo City and the surrounding metropolitan area, utilizing the existing infrastructure of helipads and heliports. We analyzed the technical specifications of five eVTOL models capable of carrying at least four passengers to determine their compatibility with the 308 existing helipads in São Paulo. The results showed that between 64% and 99% of possible routes could be achieved by the eVTOL models, leading to increased air mobility benefits. Our findings suggest that integrating eVTOLs can be a crucial strategy in global efforts to reduce greenhouse gas emissions, as outlined in the Paris Agreement of 2015. Financial mechanisms such as carbon credits and carbon offsets, which have existed since the Kyoto Protocol of 1997 can support this transition. Replacing helicopters with eVTOL aircraft could significantly reduce CO2 emissions, generating up to $1.3 million in carbon credits annually per eVTOL. A cost-benefit analysis revealed that the acquisition costs of EVTOLs are 77% lower than those of equivalent helicopters. Additionally, eVTOLs have the potential to alleviate São Paulo\u27s severe traffic congestion by reducing the number of cars on the road by an average of 8.6%, resulting in the avoidance of 52 million tons of CO2 emissions over ten years. The results of this study provide valuable insights and recommendations for policymakers and aviation stakeholders to integrate eVTOLs into São Paulo\u27s transportation system seamlessly

Percepção de efeitos adversos por adolescentes em um programa preventivo de saúde bucal, a base de clorexidina e fluoreto

OBJECTIVE: The objective of this study was to evaluate the incidence of adverse effects reported by adolescents following 14 days of use of a mouthrinse containing 0.05% NaF+0.12% chlorhexidine. METHODS: This double-blind study was developed as part of a randomized clinical trial. The adolescents enrolled to the study were randomly divided into two groups to use either: 0.05% NaF+0.12% chlorhexidine (G1, n=85) or 0.05% NaF (G2, n=85). Both groups used a 10mL solution of the mouthwash during 1 minute daily for 2 weeks under supervision. After that period, the subject's acceptance of taste was measured using a verbal descriptive scale (Labeled Magnitude Scale - LMS)11. Participants were also interviewed regarding the occurrence of possible adverse effects during treatment (temporary palate disorders, tooth staining or unpleasant taste). The proportional differences between the groups were tested using the chi-square test. RESULTS: Palate changes were reported by 26% of participants of each group; 17.7% of G1 and 32% of G2 reported an unpleasant taste (p = 0.062), while staining was reported by 55% of G1 and 68.9% of G2 (p = 0.117). Absenteeism rates were similar in both groups (G1= 2.58 ± 2.69; G2=2.81 ± 2.39), p=0.362. CONCLUSION: adherence was high in both groups and side effects reported by subjects were not perceived by them as being important. Since subjects' acceptance and compliance is fundamental to the success of an oral health program, chlorhexidine-fluoride could be a useful resource in a program of plaque control.OBJETIVO: Este estudo se propôs a calcular taxa de efeitos adversos após 14 dias de uso de solução de bochecho de NaF 0,05% + clorexidina 0,12% realizados por adolescentes. MÉTODOS: Este estudo duplo-cego foi desenvolvido como parte de um ensaio clínico randomizado. Os adolescentes foram divididos aleatoriamente em dois grupos: NaF 0,05% + clorexidina 0,12% (G1) ou NaF 0,05%, (G2) de 85 estudantes cada que bochecharam diariamente, 10mL de solução sob supervisão, durante 1 minuto, por 2 semanas. Após esse período, a aceitação dos participantes ao gosto das soluções foi avaliada através de uma escala descritiva verbal - (LMS)11. Os participantes foram entrevistados também quanto a possíveis efeitos adversos acontecidos durante tratamentos (desordens temporárias de paladar, manchamento dental e o gosto de soluções desagradáveis). As diferenças entre proporções em ambos os grupos foram testadas pelo teste do qui-quadrado. RESULTADOS: Alteração de paladar foi informada por 26% dos estudantes de cada grupo; 17,7% dos G1 e 32% do G2 notaram o gosto desagradável (p = 0,062); manchas foram observadas por 55% dos G1 e 68,9% dos G2 (p = 0,117) e, as taxas de absenteísmo foram semelhantes (G1 = 2,58±2,69; G2=2,81(2,39), p=0,362. CONCLUSÃO: A aderência dos participantes foi alta e os efeitos colaterais percebidos não pareceram importantes pelos adolescentes nos dois grupos. Implicação prática: porquanto a aceitação e aderência dos participantes são fundamentais para o sucesso de um programa de saúde bucal, a associação da clorexidina-fluoreto poderia ser um recurso adicional favorável dentro de um programa de controle de placa

Characterization of the file-specific heat-treated ProTaper Ultimate rotary system

Funding Information: FMBF acknowledges the funding of CENIMAT/i3N by national funds through the FCT‐Fundação para a Ciência e a Tecnologia, I.P., within the scope of Multiannual Financing of R&D Units, reference UIDB/50025/2020‐2023. Publisher Copyright: © 2022 The Authors. International Endodontic Journal published by John Wiley & Sons Ltd on behalf of British Endodontic Society.Aim: To compare design, metallurgy and mechanical performance of the ProTaper (PT) Ultimate system with instruments of similar dimensions from the ProGlider, PT Gold and PT Universal systems. Methodology: New PT Ultimate instruments (n = 248) were compared with instruments of similar dimensions from ProGlider (n = 31), PT Gold (n = 155) and PT Universal (n = 155) systems regarding their number of spirals, helical angle, blade symmetry, tip geometry, surface finishing, nickel/titanium ratio, phase transformation temperatures and mechanical performance. One-way anova and nonparametric Mood's median tests were used for statistical comparison (α = 5%). Results: All instruments had symmetrical blades without radial lands or flat sides, similar surface finishing and an almost equiatomic nickel/titanium ratio, whilst the number of spirals, helical angles and the tip geometry were different. PT Ultimate instruments showed 3 distinct heat treatments that matched with the colour of their metal wire. Slider and ProGlider instruments had similar R-phase start (Rs) and R-phase finish (Rf) temperatures. SX, F1, F2, F3 and Shaper instruments showed equivalent heat treatments (Rs ~45.6°C and Rf ~28.3°C) that were similar to their PT Gold counterparts (Rs ~47.9°C and Rf ~28.2°C), but completely distinct to the PT Universal ones (Rs ~16.2°C and Rf ~−18.2°C). Amongst the PT Ultimate instruments, the lowest maximum torques were observed in the SX (0.44 N cm), Slider (0.45 N cm) and Shaper (0.60 N cm) instruments, whilst the highest was noted in the FXL (4.90 N cm). PT Ultimate Slider and ProGlider had similar torsional (~0.40 N cm) and bending loads (~145.0 gf) (p = 1.000), whilst the other PT Ultimate instruments showed statistically significantly lower maximum torque, higher angle of rotation and lower bending load (higher flexibility) than their counterparts of the PT Universal and PT Gold systems. Conclusions: The PT Ultimate system comprises instruments with 3 distinct heat treatments that showed similar phase transformation temperatures to their heat-treated analogues. PT Ultimate instruments presented lower torsional strength and superior flexibility than their counterparts, whilst maximum torque, angle of rotation and bending loads progressively increased with their sizes.publishersversionpublishe

Fatores preditivos da transfusão de concentrado de hemácias em pacientes submetidos a cirurgias eletivas do aparelho digestivo: uma análise interinstitucional

O objetivo desse estudo foi compreender os fatores determinantes da prática transfusional de concentrado de hemácias em cirurgias eletivas do aparelho digestivo em quatro unidades hospitalares em Montes Claros, Minas Gerais, Brasil. Foi realizado um estudo descritivo, analítico e retrospectivo através do levantamento de dados em prontuários clínicos de quatro unidades hospitalares de onde foram catalogados os dados de pacientes a partir de junho de 2007 a dezembro de 2008, referentes às cirurgias citadas. Os resultados evidenciaram 81 casos, sendo 42% do gênero feminino e 58% do masculino. A idade média foi de 55,5 anos (±19,11 anos). As enfermidades de base reportadas mais comuns foram os processos neoplásicos (42%). Desses 81 pacientes, 38 (47%) foram hemotransfundidos no pré-operatório imediato, 28 (18%) foram transfundidos no transcirúrgico e 37 (45,7%) no pós-operatório imediato. Na análise univariada houve diferenças entre a prática transfusional pré-cirúrgica interinstitucional. Na fase cirúrgica houve relação entre a prática transfusional com a citação de motivos, fator RH (Rhesus), prática institucional e doença de base. Na fase pós-cirúrgica não foram demonstradas relações. Em todas as fases, não houve associação da prática transfusional com os tipos de procedimentos cirúrgicos, com o índice ASA (American Society of Anesthesiology) e valores de hemoglobina e hematócrito. Concluindo, esse estudo revelou que a prática transfusional foi heterogênea entre instituições hospitalares, careceu de valores laboratoriais específicos, relacionou-se com a patologia de base mas não com o tipo de procedimento cirúrgico e foi norteada pelo critério de escolha do profissional.The objective of this study was to understand the determinative factors for packed red cell transfusions in elective digestive tract surgeries in four hospital units in Montes Claros, Minas Gerais, Brazil. Retrospective analyses were performed by collecting data from the clinical records of patients submitted to elective digestive tract surgeries from June 2007 to December 2008 at these four hospital units. Eighty-one cases (42% females and 58% males) were included in this study. The average age was 55.5 years old (Standard deviation ± 19.11 years). The commonest reported underlying disease was neoplasia (42%). Of these patients, 38 (47%) were transfused in the immediate preoperative period, 28 (34.6%) during the surgery and 37 (45.7%) in the immediate postoperative period. In the univariate analysis, there was an association between the data of transfusions and the different institutions. In the surgical phase, there were correlations between transfusion and the reason for transfusion, RH factor (Rhesus), institutional policy and the underlying disease. In the postoperative phase, no association was identified. In all phases, there were not correlations between the type of surgical procedures, ASA index (American Society of Anesthesiology), and hemoglobin and hematocrit values. Therefore, this study demonstrated that the blood transfusions in elective digestive tract surgeries were heterogeneous between hospitals and were not related to specific laboratorial values; they were associated to the underlying pathology, but not with the type of surgical procedure and generally followed the criteria of the healthcare specialist