Výsledky vyhledávání - "Samuel T. Souza"

Tuning the Optical and Electrical Properties of rGO-CdSe/CdS Ultrasmall Quantum Dot Nanocomposites

Autor: Tasso O. Sales, Eduardo J. S. Fonseca, Fabiane C. de Abreu, Rosinildo Fideles do Nascimento, Noelio O. Dantas, Anielle Christine Almeida Silva, Samuel T. Souza, Ygor M. de Oliveira, Artur F. Sonsin

Publikováno v: The Journal of Physical Chemistry C. 125:6805-6811

In this study, we report the effect of the proportion of CdSe/CdS ultrasmall quantum dots (USQDs) conjugated on reduced graphene oxide (rGO). The proposed conjugation used a bond between the hydrox...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a4d361c56e0c3d9384f851498c762afa
https://doi.org/10.1021/acs.jpcc.0c09813

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In situ measurements of photoexpansion inAs2S3bulk glass by atomic force microscopy

Autor: Eduardo J. S. Fonseca, Luis C. Malacarne, Thiago V. Moreno, Donghui Zhao, Givanildo Rodrigues da Silva, Himanshu Jain, Samuel T. Souza, V. S. Zanuto, Nelson G. C. Astrath

Publikováno v: Optical Materials. 94:9-14

Photoinduced expansion is a special property of chalcogenide glasses, which makes them useful for various applications in photonics. A clear understanding of the kinetics and the topography of photoinduced effects is fundamental to improve potential

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5c67f107025bc149c95bab0b238f449a
https://doi.org/10.1016/j.optmat.2019.05.016

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Application of Raman spectroscopy for characterization of the functional polarization of macrophages into M1 and M2 cells

Autor: Eduardo J. S. Fonseca, Polliane Maria Cavalcante Araújo, Ana Rúbia Batista Ribeiro, Elaine Cristina Oliveira da Silva, Emiliano Barreto, Samuel T. Souza

Publikováno v: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 265

Macrophages are key cells in the immune inflammatory response that can be differentiated into M1 and M2 phenotypes. Polarization has a critical therapeutic value, especially in diseases in which an M1/M2 imbalance plays a pathophysiological role. Ram

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2aa4d1d90deaff8e1eea8cd2a668f198
https://pubmed.ncbi.nlm.nih.gov/34481146

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Tuning the photoluminescence by engineering surface states/size of S, N co-doped carbon dots for cellular imaging applications

Autor: Artur F Sonsin, Elaine C O Silva, Aldilane L X Marques, Lais V A T Silva, Sendy M S Nascimento, Samuel T Souza, Alexandre U Borbely, Cintya D’ Angeles E S Barbosa, Eduardo J S Fonseca

Publikováno v: Nanotechnology. 33:235708

In this research, we have synthesized carbon dots (CDs) co-doped with nitrogen and sulfur by facile hydrothermal method, using citric acid and cysteine as carbon source. The effect of solid-state thermic treatment (STT) at 303–453 K on the size, su

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47205c1dadd9f8dbe3b0460d1eb52346
https://doi.org/10.1088/1361-6528/ac56f2

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Temperature-dependence on the optical properties of chitosan carbon dots in the solid state

Autor: Artur F. Sonsin, J. C. A. Rocha, Sendy M. S. Nascimento, Raissa S. Oliveira, Samuel T. Souza, Eduardo J. S. Fonseca, Elaine Cristina Oliveira da Silva, Cintya D' Angeles do Espirito Santo Barbosa, Itiara Mayra B. Albuquerque

Publikováno v: RSC advances. 11(5)

We report the synthesis of chitosan-derived aminated carbon dots with dual fluorescence bands and their influence on the morphology, absorption and emission spectral profiles as well as on the band gap energy in relation to thermal treatment after sy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b012d7138e37d75ce014cded64d431ab
https://pubmed.ncbi.nlm.nih.gov/35424233

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Association between biomechanical alterations and migratory ability of semaphorin-3A-treated thymocytes

Autor: Givanildo Rodrigues da Silva, Salete Smaniotto, Marvin Paulo Lins, Samuel T. Souza, Navylla Candeia de Medeiros, Elaine Cristina Oliveira da Silva, Eduardo J. S. Fonseca

Publikováno v: Biochimica et Biophysica Acta (BBA) - General Subjects. 1862:816-824

Background Class 3 semaphorins are soluble proteins involved in cell adhesion and migration. Semaphorin-3A (Sema3A) was initially shown to be involved in neuronal guidance, and it has also been reported to be associated with immune disorders. Both Se

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1738e843caba2cd8251ab1bc3b8ec921
https://doi.org/10.1016/j.bbagen.2018.01.001

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Electrochemical and associated techniques for the study of the inclusion complexes of thymol and β-cyclodextrin and its interaction with DNA

Autor: Marília O. F. Goulart, Paulina Sierra-Rosales, Fabricia da Rocha Ferreira, Renata Costa Santos, Eduardo J. S. Fonseca, Emanuella Gomes da Silva, Fabiane C. de Abreu, Katherine Lozano, Claudia Yáñez, Samuel T. Souza

Publikováno v: Journal of Solid State Electrochemistry. 22:1483-1493

Thymol, a potent agent for microbial, fungal, and bacterial disease, has low aqueous solubility and it is genotoxic, i.e., is capable of damaging deoxyribonucleic acid (DNA). This possible problem of DNA toxicity needs to be solved to allow the use o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8ffb7c6d3e157a1bdb88928118dba9a5
https://doi.org/10.1007/s10008-017-3805-y

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