Past Issue

The optimization process of biodiesel production using the ionic liquid (IL) piridinium p-toluenesulfonate [HPy][p-TSA] as catalyst in methanolic reaction with babassu oil is described. The ionic liquid efficiency in babassumethanolic biodiesel was verified by complete factorial design, response surface methodology (RSM) and the analysis of variance (ANOVA) was used to evaluate the statistical model. The ANOVA results show the 95 % confidence level, only the molar ratio MeOH:oil and temperature significantly affected the formation of methyl esters.

In large cities with problems related to space, environmental degradation, pollution, and social problems of income and food distribution, insecurity and unemployment, alternatives are sought that generate a new profile for urban and/or peri-urban areas. In this context, Urban Agriculture is the theoretical reference of this article, practiced in the backyards of the municipality of Marituba, State of Pará. The aimof this article is to simulate the value of economic, environmental, social and cultural services in these backyards.

The purpose of this study is to test and analyze the effect of understanding tax regulations, taxpayer awareness, service quality, and tax sanctions on taxpayer compliance in paying motor vehicle taxes. The method used in this research is quantitative research methods. The data sources used are primary data and secondary data obtained from the National Direção de Transporte e Terrestres (DNTT). Methods of data collection using a survey method by distributing statements to respondents in the form of a questionnaire. The number of samples used in this study was 100 motor vehicle taxpayers.

O ano de 2020 é marcado por grandes desafios na área da saúde com o advento da pandemia por Covid-19 que assolou o mundo de forma geral, deste modo, objetivo principal deste estudo é relatar e evidenciar a importância dos EPIs para profissionais e estagiários de saúde no cenário da pandemia de Coronavírus. Trata-se de uma revisão da literatura de cunho exploratório em que foi possível como resultado alcançado evidenciar a importância do uso dos equipamentos de proteção individual no contexto de pandemia.

The objective of this work was to verify the digestive enzymatic activity of pirarucu (Arapaima gigas) using live food during initial feeding training. A total of 804 juveniles of pirarucu were homogeneously distributed in six circular PVC tanks with a capacity of 500 L (400 L water volume) and a flow rate of 10 L h-1. The experiment was conducted in three phases, four days for each phase.

One-third of people with pre-diabetic condition progress to type 2 diabetes within five years. However, with adequate knowledge on diabetes risk reductionbehaviors, progression to diabetes can be controlled. We therefore recruited 220 suspected cases ofpre-diabetic patients at Busia County Referral Hospital assessed their knowledge, and adaption of risk reduction behavior. A cross sectional study design and a systematic sampling approach wereused.

O estudo em questão elucida as ações da enfermagem no cuidado pré-natal de baixo risco. Objetivo: refletir sobre as ações realizadas pelo enfermeiro no cuidado pré-natal de baixo risco.

Objetivo: identificar o perfil clínico dos óbitos após cirurgia cardíaca com esternotomia. Métodos: estudo descritivo, retrospectivo, de bordagem quantitativa realizado em um hospital público de referência cardiovascular emPernambuco.A população alvo foram os pacientes submetidos à cirurgia cardíaca com esternotomia que vieram a óbito no período de julho de 2017 a junho de 2019. Resultados: no total, 466 pacientes foram submetidos a cirurgia cardíacanoperíodo.A amostra foi compostade51 pacientescuja idade média foi de 67 anos, predominância do sexo feminino.

The importance of national and international university rankings for their legitimacy in the institutional field has questioned the researches and leaders of the institutions for a closer look at this issue. The objective of this paper was to analyze the influence of the performance indicators of the internationalization of rankings as legitimacy for the institutional field of a public higher education.

O Based on a description of the theories and principles of the analysis of children's drawings, we propose an integrative approach that enables their use in research with children. We created a brief timeline of the concepts that involve children's drawings with emphasis on the evolutionary approach as the central axis of theorizations in the field.