Candiago A.,University Braz Cubas |
Kawamoto L.T.,Federal University of São Paulo
Espacios | Year: 2016
Students of Information Technology have difficulty with the logic of algorithms ordination. Among them, Heapsort stands out for the binary tree. The project proposes ludic application as an auxiliary tool for the teacher. So it has been developed and validated a 3D Serious Game for PC to support the teaching of Heapsort logic ordination. The materials used are the Adobe Photoshop CS6 for the treatment of images, Autodesk Maya 2014 for modeling and Unreal Engine 4, for programming with Blueprint and C ++. The methodology applied is the ICS. The tests were applied to students and teachers. It was shown that motivation is the determining factor when Serious Game is used in tea ching logic through interaction and simulation of a binary tree.
Candiago A.,University Braz Cubas |
Kawamoto L.T.,Federal University of São Paulo
Espacios | Year: 2016
The use of laboratories is important for the grounding of health and engineering professionals, but it presents many risks of accidents for students. So it was developed and validated a 3D virtual environment for Mobile in first person that presents possible emergencies occur during a practical chemistry class. The method used was a quantitative research. The validation was performed using 583 students, and 237 students used the 3D virtual environment (group A). Other 346 students used traditional resources without the use of technological resources (group B). The results were analyzed by Bioestat 5.0 software. The use of serious game in healthcare and engineering, with competition and goals, can influence the motivation and facilitate the learning.
Ferreira L.M.,Federal University of Alfenas |
Fernandes B.B.,National Institute for Space Research |
Fernandes B.B.,University Braz Cubas |
Ueda M.,National Institute for Space Research |
Ramos A.S.,Federal University of Alfenas
Materials Science Forum | Year: 2017
Metal matrix multicomponent alloys and others based on the Ti+Ti6Si2B phases are potentially attractive for structural applications. However, there is limited information in literature on the effect of alloying in stability of the Ti6Si2B compound, which presents its single-phase region close to Ti-22Si-11B alloy composition (at.-%). In this sense, this work discusses on the effect of copper addition on the stability of the Ti6Si2B compound. Elemental powder mixtures were used to prepare the Ti-xCu-22Si-11B (x=2 and 6 at.-%) alloys by high-energy ball milling and subsequent heat treatment (1100ºC for 240 minutes). The as-milled Ti-Cu-Si-B powders and heat-treated samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectrometry (EDS). Similar behavior was noted during ball milling of Ti-Cu-Si-B powders, i.e., the Ti5Si3 phase was formed after milling for 180 minutes. The mechanically alloyed and heat treated Ti-2Cu-22Si-11B alloy presented a matrix of Ti6Si2B dissolving close to 2 at.-% Cu. Precipitates of Ti5Si3 and other unknown Cu- and Fe-rich phase were also identified in microstructures of these quaternary alloys, whose amounts were increased in the mechanical alloyed and heat treated Ti-6Cu-22Si-11B alloy. © 2017 Trans Tech Publications, Switzerland.
Motta L.J.,Odontopediatria |
Bachiega J.C.,Nove de Julho University |
Guedes C.C.,University Braz Cubas |
Laranja L.T.,Odontopediatria |
Bussadori S.K.,Nove de Julho University
Clinics | Year: 2011
OBJECTIVE: To determine whether there is a correlation between halitosis and mouth breathing in children. STUDY DESIGN: Fifty-five children between 3 and 14 years of age were divided into two groups (nasal and mouth breathing) for the assessment of halitosis. A descriptive analysis was conducted on the degree of halitosis in each group. The chi-square test was used for comparison between groups, with a 5% level of significance. RESULTS: There was a significantly greater number of boys with the mouth-breathing pattern than girls. A total of 23.6% of the participants had no mouth odor, 12.7% had mild odor, 12.7% had moderate odor and 50.9% had strong odor. There was a statistically significant association between halitosis and mouth breathing. CONCLUSIONS: The occurrence of halitosis was high among the children evaluated, and there was a statistically significant association between halitosis and mouth breathing. © 2011 CLINICS.
Lino J.L.S.,University Braz Cubas |
Christ B.,Institute Estudos Avancados IEAV CTA
Chinese Journal of Physics | Year: 2012
In the present paper we study the Schwinger multichannel (SMC) method with plane waves as a basis set (SMC-PW) for the elastic integral cross sections of He, Ne, H 2, and CH 4 by positron impact and also the inelastic integral cross sections of H 2 (transition X 1Σ g +→ B 1Σ u +). The essence of this work is based on the fact that the main limitation of the SMC method for positron scattering resides in what makes it a general method, i.e., the expansion of the scattering function is done in an L 2 basis (Cartesian Gaussian functions) and this is very effective for short range potentials. Our effort is to improve the SMC method through the use of plane waves as trial functions (SMC-PW). In order to do this, we have to evaluate reliable codes involving matrix elements of the type 〈 →kf |V G o (+)V |k i → which is here done by direct numerical quadrature. We find that the 〈 →kf |V G o (+)V ||ki → term is adequate when a minimum number of points is used for the radial and angular Gauss-Legendre quadratures. These quadratures are recommended for the efficient calculation of elastic positron scattering by atoms and molecules. We also present a preliminary study on the positron-impact electronic excitation of H 2 as investigated also by Arretche and Lima [Phys. Rev. A 74, 042713 (2006)] using the SMC method in the range 13.5-30 eV. The propose of this work was to study the numerical stability of the SMC-PW and also investigate the influence of open channels (energetically accessible electronic states). Cross sections were performed for the elastic case at intermediate energies in the range 50-200 eV. The results (elastic and inelastic) are consistent with the experimental data and theoretical studies. © 2012 The Physical Society of the Republic of China.
Roman E.A.F.R.,University of Campinas |
Reis D.,University Braz Cubas |
Romanatto T.,University of Medical Sciences of Costa Rica |
Maimoni D.,University Braz Cubas |
And 5 more authors.
Molecular and Cellular Endocrinology | Year: 2010
Central leptin action requires PI3K activity to modulate glucose homeostasis and peripheral metabolism. However, the mechanism behind this phenomenon is not clearly understood. We hypothesize that hypothalamic PI3K activity is important for the modulation of the AMP-activated protein kinase (AMPK)/acetyl-CoA carboxylase (ACC) pathway, PGC1α, and AKT in skeletal muscle (SM). To address this issue, we injected leptin into the lateral ventricle of rats. Hypothalamic JAK2 and AKT were activated by intracerebroventricular (ICV) injection of leptin in a time-dependent manner. Central leptin improved tolerance to glucose (GTT), increased PGC1α expression, and AKT, AMPK, ACC and JAK2 phosphorylation in the soleus muscle. Previous ICV administration of either LY294002 or propranolol (IP) blocked these effects. We concluded that the activation of the hypothalamic PI3K pathway is important for leptin-induced AKT phosphorylation, as well as for active catabolic pathway through AMPK and PGC1α in SM. Thus, a defective leptin signalling PI3K pathway in the hypothalamus may contribute to peripheral resistance to insulin associated to diet-induced obesity. © 2009 Elsevier Ireland Ltd. All rights reserved.
Corazza P.H.,University Of Passo Fundo |
De Castro H.L.,University Braz Cubas |
Feitosa S.A.,São Paulo State University |
Kimpara E.T.,São Paulo State University |
Della Bona A.,University Of Passo Fundo
American Journal of Dentistry | Year: 2015
Purpose: To investigate the influence of CAD-CAM diamond bur deterioration on surface roughness (Ra) and maximum failure load (Lf) of Y-TZP-based ceramic (YZ) substructures (SB) veneered with a feldspathic porcelain. Methods: Two sets of burs (B1 and B2) were used to fabricate 30 YZ SB each in a CAD/CAM system (Cerec InLab). The SB were identified (1-30) according to the milling sequence (MS). SEM images of the burs were recorded before milling, and after milling 15 and 30 SB. The SB Ra was measured. All SB were veneered, cemented onto a fiber reinforced epoxy resin die, and loaded to failure. Specimens from B1 group were cyclic fatigued (106 cycles) before loading to failure. Fractographic analysis was performed. Data were statistically analyzed using Student's t-test, Weibull analysis, Pearson's correlation and ANOVA (α= 0.05). Results: The mean Ra value of B1 specimens was statistically greater than B2. Weibull modulus of B1 and B2 were statistically similar. The correlation between MS and Lf was not statistically significant for the groups. MS and Ra had significant correlation for both groups (Bl: r= -0.514, P= 0.015; B2: r= -0.462, P= 0.03). Although the visual aspect (SEM) of the burs was similar after 30 millings, the mean Ra values were significantly different after 27 millings for Bl and 24 millings for B2.
Bussadori S.K.,Nove de Julho University |
Guedes C.C.,University Braz Cubas |
Bachiega J.C.,University Braz Cubas |
Santis T.O.,Nove de Julho University |
Motta L.J.,University Braz Cubas
Journal of Clinical Pediatric Dentistry | Year: 2011
Background: The chemical-mechanical removal of caries involves the chemical softening of the infected dentin, following by the mechanical removal of the softened tissue using non-cutting manual instruments. Papacárie® (Fórmula&Ação, Sao Paulo, Brazil) is a product in gel form used for the chemical-mechanical softening of the affected tissue. Objective: The purpose of the present study was to evaluate the effectiveness of Papacárie®. Methods: Clinical and radiographic evaluations were performed on 14 young permanent molars treated with Papacárie® and restored with glass ionomer cement (VitroMolar, DFL Ind. Com LTDA, Rio de Janeiro, Brazil) 24 months following intervention. Results: Success was achieved in 13 of the 14 cases. Conclusion: Papacárie® was effective in the treatment of carious lesions and constitutes a conservative alternative that offers benefits to patients.
PubMed | University Braz Cubas and São Paulo State University
Type: Journal Article | Journal: Brazilian dental journal | Year: 2016
Adenosquamous carcinoma is an aggressive variant of squamous cell carcinoma. This report describes a case of adenosquamous carcinoma with clinical features of a benign lesion and discusses the differential diagnoses, especially regarding histopathological and immunohistochemical analyses. A 45-year-old male was referred to our outpatient clinic complaining about a rapid-growing enlargement in hard palate. Clinical examination revealed an erythematous and pedunculated nodule with lobulated non-ulcerated surface. Excisional biopsy was performed following clinical diagnosis of pyogenic granuloma. Histologically, the specimen consisted of areas characterizing both well-differentiated squamous cell carcinoma and true adenocarcinoma. After a broad list of immunohistochemical markers was evaluated (AE1/AE3, CEA, CK5, CK7, CK8/18, p53, p63 and Ki67), the diagnosis of adenosquamous carcinoma was rendered and the patient referred to complementary surgery. Adenosquamous carcinoma represents a challenge in diagnostic routine due to its rarity, diverse range of clinical presentations and histological features. Furthermore, classical clinical benign features may be present in malignant lesions; hence the submission of every surgical specimen to histological analysis is mandatory to provide the patient the adequate treatment.
PubMed | University Braz Cubas, Sao Leopoldo Mandic Research Center and University of Sao Paulo
Type: Journal Article | Journal: The journal of contemporary dental practice | Year: 2016
Radiopacity is a fundamental requisite to check marginal adaptation of restorations. Our objective was to assess the radiopacity of 28 brands of light-cured composite resins and compare their radiopacity with that of enamel, dentin, and aluminum of equivalent thickness.Composite resin disks (0.2, 0.5, and 1 mm) were radiographed by the digital method, together with an aluminum penetrometer and a human tooth equivalent tooth section. The degree of radiopacity of each image was quantified using digital image processing. Wilcoxon nonparametric test was used for comparison of the mean thickness of each material.All of the materials tested had an equal or greater radiopacity than that of aluminum of equivalent thickness. Similar results for enamel were found with the exception of Durafill, which was less radiopaque than enamel (p < 0.05). All the specimens were more radiopaque than dentin, except for P90 (which was equally radiopaque) and Durafill (which was less radiopaque). The thickness of the specimens may influence the similarity to the enamels radiopacity. All of the composite resins comply with specification #27 of the American Dental Association. The radiopacity of Amelogen Plus, Aph, Brilhiante, Charisma, Concept Advanced, Evolux X, Exthet X, Inten S, Llis, Master Fill, Natural Look, Opallis, P60, Tetric, Tph, Z100, and Z250 was significantly higher than that of enamel (p < 0.05).With these composites, it is possible to observe the boundaries between restoration and tooth structure, thus allowing clinicians to establish the presence of microleakage or restoration gap.Suitable radiopacity is an essential requisite for good-quality esthetic restorative materials. We demonstrate that only some composites have the sufficient radiopacity to observe the boundaries between restoration and tooth structure, which is the main cause of restoration failure.