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867 results on '"Cunha G"'

1. On a Perturbed Critical p-Kirchhoff-Type Problem

Author

Cunha, G. N., Faraci, F., and Silva, K.

Subjects
Mathematics - Analysis of PDEs
Abstract

In this paper we deal with a stationary non-degenerate $p-$Kirchhoff type problem with critical non-linearity and a subcritical parametrized perturbation. We work on bounded domains of the Euclidean space, without any restriction on the dimension or on $p>0$. Variational methods will be utilized in combination with an analysis of the fibering functions of the energy functional, in order to obtain ground state solutions, as well as Mountain Pass solutions, depending on the values of the parameter. A local analysis of the energy functional will allow us to obtain non-trivial solutions even beyond the extremal parameter.

Published
2023

2. Level of education and mortality in the vulnerable period following an acute heart failure hospitalization

Author

Pereira Da Cunha, G, primary, Melo, L H S, additional, Neto, J D, additional, Duarte, M B, additional, Moretti, R, additional, Vercka, K, additional, Senger, C R, additional, Pain, J R, additional, Silvestre, O, additional, Nadruz, W, additional, Matos, L G, additional, Adam, E L, additional, Cirino, R D, additional, Taniguchi, F B, additional, and Fernandes-Silva, M M, additional

Published
2023
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3. Accuracy of the GRACE Score for mortality prediction in myocardial infarction with nonobstructive coronary arteries (MINOCA)

Author

Lopes, V, primary, Moreira, N, additional, Fernandes, R, additional, Cunha, G, additional, Ferreira, J, additional, Costa, G, additional, Monteiro, E, additional, Fernandes, D, additional, Guimaraes, J, additional, Milner, J, additional, Marinho, V, additional, Monteiro, S, additional, Goncalves, F, additional, and Goncalves, L, additional

Published
2023
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9. Association between left ventricular wall-thickness by CT and endocardial voltage potentials in patients with ischemic cardiomyopathy

Author

Gomes, D, primary, Cunha, G, additional, Freitas, P, additional, Guerreiro, S, additional, Abecasis, J, additional, Rodrigues, G, additional, Matos, D, additional, Carmo, J, additional, Galvao Santos, P, additional, Moscoso Costa, F, additional, Carmo, P, additional, Belo Morgado, F, additional, Cavaco, D, additional, M Ferreira, A, additional, and Adragao, P, additional

Published
2023
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21. Looking beyond left ventricular ejection fraction – a new multiparametric CMR score to refine the prognostic assessment of HF patients

Author

Lopes Da Cunha, G J, primary, Rocha, B, additional, Sousa, J, additional, Maltes, S, additional, Brizido, C, additional, Strong, C, additional, Guerreiro, S, additional, Abecasis, J, additional, Andrade, M J, additional, Aguiar, C, additional, Saraiva, C, additional, Freitas, P, additional, Mendes, M, additional, and Ferreira, A, additional

Published
2022
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22. Evaluating the value of the timing of recurrence during blanking period after atrial fibrillation ablation

Author

Lopes Da Cunha, G J, primary, Bem, G, additional, Durazzo, A, additional, Matos, D, additional, Rodrigues, G, additional, Carmo, J, additional, Carvalho, M S, additional, Carmo, P, additional, Santos, P G, additional, Costa, F M, additional, Cavaco, D, additional, Morgado, F B, additional, Mendes, M, additional, and Adragao, P, additional

Published
2022
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24. Late gadolinium enhancement is a strong predictor of life threatening arrhythmias in patients with dilated cardiomyopathy undergoing ICD implantation for primary prevention of sudden cardiac death

Author

Lopes Da Cunha, G J, primary, Lopes, P, additional, Freitas, P, additional, Rocha, B, additional, Gomes, D, additional, Paiva, M, additional, Amador, R, additional, Abecasis, J, additional, Guerreiro, S, additional, Matos, D, additional, Rodrigues, G, additional, Carvalho, M S, additional, Mendes, M, additional, Adragao, P, additional, and Ferreira, A, additional

Published
2022
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26. The peri-infarct gray zone of myocardial fibrosis is a better predictor of ventricular arrhythmias than dense core fibrosis in patients with previous myocardial infarction

Author

Lopes, P, primary, Cunha, G, additional, Freitas, P, additional, Rocha, B, additional, Abecasis, J, additional, Carmo, J, additional, Guerreiro, S, additional, Galvao Santos, P, additional, Moscoso Costa, F, additional, Carmo, P, additional, Cavaco, D, additional, Morgado, F, additional, Mendes, M, additional, Adragao, P, additional, and Ferreira, A, additional

Published
2022
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30. The Use of Metabolomics in Cancer Research

Author

van Ravenzwaay, B., Cunha, G. C., Fabian, E., Herold, M., Kamp, H., Krennrich, G., Krotzky, A., Leibold, E., Looser, R., Mellert, W., Prokoudine, A., Strauss, V., Trethewey, R., Walk, T., Wiemer, J., and Cho, William C.S., editor

Published
2010
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33. Up-to-Date Role of CT/MRI LI-RADS in Hepatocellular Carcinoma

Author

Moura Cunha G, Chernyak V, Fowler KJ, and Sirlin CB

Subjects
magnetic resonance imaging, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, computed tomography, hepatocellular carcinoma, li-rads, RC254-282
Abstract

Guilherme Moura Cunha,1 Victoria Chernyak,2 Kathryn J Fowler,1 Claude B Sirlin1 1Liver Imaging Group, Department of Radiology, University of California San Diego, La Jolla, CA, USA; 2Department of Radiology, Beth Israel Deaconess Medical Center, Boston, MA, USACorrespondence: Guilherme Moura CunhaLiver Imaging Group, Department of Radiology, University of California San Diego, 9500 Gilman Dr. Mail Code 0888, La Jolla, San Diego, CA, 92093, USAEmail gcunha@uw.eduAbstract: Hepatocellular carcinoma (HCC) is a leading cause of mortality worldwide and a major healthcare burden in most societies. Computed tomography (CT) and magnetic resonance imaging (MRI) play a pivotal role in the medical care of patients with or at risk for hepatocellular carcinoma (HCC). When stringent imaging criteria are fulfilled, CT and MRI allow for diagnosis, staging, and assessment of response to treatment, without the need for invasive workup, and can inform clinical decision making. Owing to the central role of these imaging modalities in HCC management, standardization is essential to facilitate proper imaging technique, accurate interpretation, and clear communication among all stakeholders in both the clinical practice and research settings. The Liver Imaging Reporting and Data System (LI-RADS) is a comprehensive system that provides standardization across the continuum of HCC imaging, including ordinal probabilistic approach for reporting that directs individualized management. This review discusses the up-to-date role of CT and MRI in HCC imaging from the LI-RADS perspective. It also provides a glimpse into the future by discussing how advances in knowledge and technology are likely to enrich the LI-RADS approach.Keywords: hepatocellular carcinoma, computed tomography, magnetic resonance imaging, LI-RADS

Published
2021

44. Validation of a novel framework defining the acceptable standard of care for heart failure with reduced ejection fraction

Author

Lopes, P, primary, Albuquerque, F, additional, Freitas, P, additional, Presume, J, additional, Rocha, B, additional, Cunha, G, additional, Strong, C, additional, Tralhao, A, additional, Trabulo, M, additional, Ferreira, J, additional, Ventosa, A, additional, Aguiar, C, additional, Mendes, M, additional, and Ferreira, A, additional

Published
2021
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45. The gray zone of myocardial fibrosis is a better predictor of ventricular arrhythmias than total myocardial fibrosis in patients with previous myocardial infarction

Author

Lopes, P, primary, Freitas, P, additional, Ferreira, A, additional, Sousa, J A, additional, Rocha, B, additional, Cunha, G, additional, Cavaco, D, additional, Abecasis, J, additional, Carmo, P, additional, Saraiva, C, additional, Morgado, F, additional, Chotalal, D, additional, Feliciano, S, additional, Mendes, M, additional, and Adragao, P, additional

Published
2021
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50. Citotoxicidade de soldas elétricas a ponto: estudo in vitro Cytotoxicity of electric spot welding: an in vitro study

Author

Rogério Lacerda dos Santos, Matheus Melo Pithon, Leonard Euler A. G. Nascimento, Fernanda Otaviano Martins, Maria Teresa Villela Romanos, Matilde da Cunha G. Nojima, Lincoln Issamu Nojima, and Antônio Carlos de Oliveira Ruellas

Subjects
Toxicidade, Técnicas de cultura de células, Soldagem em Odontologia, Toxicity, Cell culture techniques, Welding in dentistry, Dentistry, RK1-715
Abstract

OBJETIVO: o processo de solda envolve íons metálicos capazes de provocar lise celular. Diante disso, o objetivo deste estudo foi testar a hipótese de que existe citotoxicidade entre diferentes tipos de ligas (CrNi, TMA, NiTi) utilizadas em Ortodontia, submetidas à solda elétrica a ponto. MÉTODOS: três tipos de ligas foram avaliados neste estudo. Foram confeccionados 36 corpos de prova, 6 para cada combinação entre os fios, divididos em 6 grupos - grupo AA (aço com aço), grupo AT (aço com TMA), grupo AN (aço com NiTi), grupo TT (TMA com TMA), grupo TN (TMA com NiTi) e grupo NN (NiTi com NiTi) - que foram submetidos à solda a ponto para avaliação quanto ao possível efeito citotóxico nos tecidos bucais. Previamente, os corpos de prova foram limpos com álcool isopropílico e esterilizados em luz ultravioleta. O ensaio de citotoxicidade foi realizado utilizando-se cultura de células (linhagem L929, fibroblastos de camundongos), submetida ao teste para células viáveis em vermelho neutro ("dye-uptake") no tempo de 24h. A análise de variância e comparação múltipla (ANOVA) e teste de Tukey foram utilizados (p< 0,05). RESULTADOS: os resultados demonstraram que não houve diferença estatisticamente significativa entre os grupos experimentais (P> 0,05). Foi observada maior viabilidade celular no grupo TT, seguido dos grupos AT, TN, AA, NA e NN. CONCLUSÃO: pôde-se evidenciar que solda em fios de liga de NiTi causaram maior quantidade de lise celular. Soldas elétricas a ponto demonstraram pequena capacidade de causar lise celular.OBJECTIVE: The welding process involves metal ions capable of causing cell lysis. In view of this fact, the aim of this study was to test the hypothesis that cytotoxicity is present in different types of alloys (CrNi, TMA, NiTi) commonly used in orthodontic practice when these alloys are subjected to electric spot welding. METHODS: Three types of alloys were evaluated in this study. Thirty-six test specimens were fabricated, 6 for each wire combination, and divided into 6 groups: Group SS (stainless steel), Group ST (steel with TMA), Group SN (steel with NiTi), Group TT (TMA with TMA), Group TN group (TMA with NiTi) and Group NN (NiTi with NiTi). All groups were subjected to spot welding and assessed in terms of their potential cytotoxicity to oral tissues. The specimens were first cleaned with isopropyl alcohol and sterilized with ultraviolet light (UV). A cytotoxicity assay was performed using cultured cells (strain L929, mouse fibroblast cells), which were tested for viable cells in neutral red dye-uptake over 24 hours. Analysis of variance and multiple comparison (ANOVA), as well as Tukey test were employed (p0.05). Cell viability was higher in the TT group, followed by groups ST, TN, SS, NS and NN. CONCLUSIONS: It became evident that the welding of NiTi alloy wires caused a greater amount of cell lysis. Electric spot welding was found to cause little cell lysis.

Published
2011
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