Repositório Institucional da UNIVASF (RIU)
O repositório preserva e provê acesso fácil e aberto a todos os tipos de objetos digitais, incluindo: textos, imagens, vídeos e conjuntos de dados
Comunidades no DSpace
Selecione uma comunidade para navegar por suas coleções
Submissões Recentes
Anais Mostras PROEN Scientex 2024 - Univasf: 20 anos transformando vidas e construindo o futuro no semiárido
(2026) Ribeiro , Marcelo Silva de Souza; Sarmento, Sued Sheila; Carvalho, Amanda Laís do Nascimento
Associação entre padrões pressóricos de 24 h e remodelamento cardíaco ao ecocardiograma em pacientes com insuficiência cardíaca de ejeção reduzida: subanálise do estudo IMPACT-HF
(2026-05-27) Diniz Junior, Edvaldo Alves; Armstrong, Anderson da Costa
This research is a cross-sectional, descriptive, and exploratory analytical study of patients
with heart failure with reduced ejection fraction (LVEF < 40%) included in the
IMPACT-HF study, who underwent ambulatory blood pressure monitoring (ABPM) and
echocardiography before the start of the intervention. The recruitment period was from
September 2024 to February 2026, totaling a sample size of 21 patients with a mean
age of 52.4 ± 9.0 years, predominantly male (66.7%; 95% CI: 46.4% – 86.9%). Its
objective is to correlate ABPM blood pressure patterns with echocardiographic phenotypes
in this group of patients, in order to evaluate the association between ABPM
patterns and echocardiographic markers of remodeling. To assess the associations
between the qualitative variables of ABPM and the echocardiographic domains, the
Chi-square test of independence or, preferably, Fisher's exact test was applied, with
the level of statistical significance set at 5% (p < 0.05) for all tests performed. The data
obtained revealed a negative correlation between the percentage of nocturnal decrease
in systolic blood pressure and the E/A ratio (r = -0.527; p = 0.017), highlighting
that the "Non-Dipper" and "Riser" patterns are associated with worsening diastolic dysfunction
indices and increased filling pressures of the cardiac chambers. The "Non-
Dipper" pattern was also associated with ventricular remodeling, accounting for 40%
of all cases of hypertrophy and chamber dilation. Altered systolic pressure load (≥
20%) showed a strong positive association with relative left ventricular wall thickness
(r = 0.557; p = 0.009) and an inverse association with indexed end-diastolic volume (r
= -0.502; p = 0.020), relating increased pressure load to myocardial thickening and
consequent restriction of the ventricular cavity's dilation and accommodation capacity.
Finally, this study did not correlate a more stringent blood pressure target (SBP < 120
mmHg) with echocardiographic worsening in this patient profile.
Descobrindo o poder do átomo: uma sequência didática interativa para o ensino sobre fusão e fissão nuclear no Ensino Fundamental
(2026-03-20) Siqueira, Ysmailyn; da Rocha, Cleidinar; https://orcid.org/0000-0001-7538-211X; http://lattes.cnpq.br/0315236248284226; http://lattes.cnpq.br/2184637262694651
The book "Discovering the Power of the Atom" presents an interactive teaching sequence designed to teach the concepts of nuclear fusion and fission in elementary school, overcoming the traditional challenges of this complex area of physics. Through contextualized and engaging activities, the material makes nuclear physics accessible and thought-provoking for elementary and middle school students, helping them understand both the scientific principles and the practical and ethical implications of the subject. The work highlights the importance of this knowledge for shaping critical citizens who are aware of current energy and environmental challenges, while also serving as an innovative tool for teachers, with the goal of inspiring young people to become future scientists and agents of social change.
Geometria analítica: equações paramétricas do plano
(2026-05-28) Saavedra, Beto
This material presents, in a visual and educational way, the idea of a plane in parametric form in Analytic Geometry. The plane is defined by an initial point (P_0) and by two non-parallel direction vectors, (\vec a) and (\vec b). From the equation (P = P_0 + s\vec a + t\vec b), it is shown that, as the parameters (s) and (t) vary, the points belonging to the plane are generated. Thus, the animation helps students understand how the direction vectors determine the orientation of the plane in space.
Experiências geoanalíticas na sala de aula
(2019-06-29) Saavedra, Beto
Through the solution of problems in Analytic Geometry, this work aims to discuss the potential of its concepts and formulas, which are often applied mechanically. Furthermore, it seeks to show, with due modesty, that within the teaching and learning process of this discipline there are still new horizons to be discovered and explored. This work is not intended as an introduction to Analytic Geometry, but rather as a review.