Past Issue

The aim of the study was to identify the prevalence of the Cerebrovascular accident (CVA) cases in the elderly population of the state of Rio Grande do Sul (RS), Brazil. Epidemiological studies, data from DATASUS and hospital registries of elderlies with non-specific CVA (2016-2021) in RS were included. The prevalence of VCA in the old population varied from 1.34% to 1.44% with major occurrence in white women between 70 and 79 years old. The mortality rate was higher in elderlies over 80. The average hospital stayranged from 7.4 to 8.3 days being longer among the older individuals.

A Delayed postpartum uterine inversion is a clinical condition rarely described in the literature and its frequency varies considerably. In around 50% of the cases there is no defined casuistry or identifiable predisposing factor. The data for the preparation of the literature review were mostly inventoried from foreign articles published between 2006 and 2021.

We present the final result of an applied geometry research as an algorithm for interpolation of in in N-dimensional sparse grids. The method is based on divide and conquer approach and a “golden rule” chosen for optimization of the problem in specific and general terms, showing good results in a much shorter time. The main steps are Mapping-Triangulation-Interpolation, and we present the results from its application to the problem of estimating age and mass of stelar clusters.

The COVID-19 pandemic, caused by the coronavirus SARS-CoV-2, has put into evidence multiple problems in education. This research frames some of these problems in order to investigate their nuances and impacts, in a systemic way, to propose interventions that prepare a transition from the current state of affairs into a desired future. Therefore, we chose the Prospective Design view in order to design the long term scenarios for university education that characterise the case study reported here.

The hierarquical zeolites with ZSM-5 structure (HZ5) catalyts was obtained using as silanizant agent the Phenyl-Amino-Propyl-Trimethoxysilane (PHAPTMS). The materials were synthesized by the hydrothermal method and characterized by X-ray diffraction, infrared spectroscopy, thermal analysis, surface acidity and scanning electron microscopy. The kinetic study by thermogravimetry of pure Atmospheric Residue of Petroleum (ATR) and High Density Polyethylene (HDPE) wastes werr performed with and without catalyst.

After the coronavirus pandemic, virtual work environment solutions increased dramatically in human history, proving to be a viable and much more sustainable method of project management and overall organization work. Teams working on projects in a virtual environment help reduce the carbon footprint and use resources more efficiently. This study is the first to do a quantitative analysis of the relationship between sustainability in project management and project success in a virtual environment.

Acerola (Malpighia emarginata) is widely distributed in Brazil and has a large amount of flavonoids. Quercetin is a flavonoid present in this fruit and its protection is necessary due to its high antioxidant activity. Thus, encapsulation by spray drying is the most used technique for the protection of this compound. Furthermore, it is necessary to determine the biomarkers contained in the dry extract of acerola. In a sample of dry extract of acerola, a selective extraction was carried out for quercetin determination by chromatographic analysis.

Environmental issues are the biggest factor in the search for cleaner energy production alternatives. The use of hydrokinetic turbines can be a viable option for communities close to rivers that have specific hydrological characteristics. Using geoprocessing techniques, it was identified and mapped within the São Francisco Verdadeiro River Basin (SFV), potential sites for installing hydrokinetic systems to generate electricity. Digital Alos Palsar Elevation Models chosen by the NASA Earth Data project and images from Landsat 8 (L8) were used.

A logística é uma das áreas mais importantes da Engenharia Civil. Isso se deve ao fato de que para qualquer tipo de obra na construção civil, é fundamental que haja um plano logístico a fim de evitar danos e erros estratégicos no desenvolvimento da mesma. Cabe lembrar que a logística é a técnica de gestão que tem como função planejar, implementar e controlar os serviços de transporte e armazenamento de mercadorias de modo eficiente e eficaz, como foco em satisfazer os parâmetros propostos pelos clientes e/ou fornecedores de forma lucrativa.

Este trabalho visa trazer ao conhecimento da comunidade científica conceitos e propriedades possivelmente relevantes sobre o intervalo entre os primos, chamados também de prime gaps. Toda a pesquisa é feita com base em dados obtidos diretamente por meio de algoritmos computacionais criados para o estudo dos primos e dos prime gaps. Estes algoritmos foram desenvolvidos pelos autores. Fundamentando-se nos dados obtidos, foi possível desenvolver e propor conjecturas para o comportamento dos prime gaps.