MATEUS RAMOS DE ALMEIDA

MATEUS RAMOS DE ALMEIDA

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X- ray experimental set-up for in-vitro nail test
2023 - ZAMBONI, C.B.; GIOVANNI, D.N.S.; ALMEIDA, M.R.; TODO, A.S.; SABARA, F.; RODRIGUES JUNIOR, O.
In this investigation, the elements Ca and S were evaluated in a single nail clipping using compact and portable X-ray spectrometer model X-123 SDD with Ag target. Experimental conditions for current, voltage and excitation time were investigated. These analyses can be useful for a variety of applications, including nutritional and medical diagnosis, such as, the evaluation of bone dysfunctions by measurement of Ca (bone decalcification) and S for nutrition evaluations (collagen production). This analysis offers some benefits comparatively to blood and serum analyses, such as, non-invasive collection, fast analyses (minutes) and low cost. In addition, nail clippings are simple to obtain, easy to store, and easy to transport. This pilot study show a positive expectation for clinical application using in-vitro nail test.
Application of the X-ray fluorescence analysis to determine the elemental composition of Brazilian Olympic coins
2023 - SILVA, ANA C.K. de S.; ZAMBONI, CIBELE B.; ALMEIDA, MATEUS R. de; SILVA, DALTON G.N. da
In this investigation, the elemental composition of Brazilian Olympic coins was investigated using Energy Dispersive X-ray Fluorescence (EDXRF) analytic technique. From the release of Olympic albums (2014, 2015, and 2016) the demand for these coins has increased and some can be worth up to 7000% more than their normal value. The analysis was performed using a compact X-ray spectrometer model X-123 SDD with Ag target. The characteristic X-ray fluorescent intensity of Ka lines were measured with a Si Drift detector (25 mm² x 500 μm) with Be window (12.5 μm). For the spectrometer calibration, certified standard solutions from Z = 14 to Z = 51 were evaluated. The results were compared with coins in current circulation. All the spectral analysis was performed using WinQxas software. The spectral analysis of Olympic coins shows Cr, Mn, Fe and Cu as majorities and peaks of various elements as traces. The 2014 and 2015 Olympic coins groups exhibited similar surface compositions for majorities and trace elements (V, Ni, Mo, Ag, In, Sn, Ce, Nd, Ir and Pb), while the 2016 group coins exhibited Nb presence as a trace element. Some differences were also identified when the comparison was made with current coins. These data provide curators with information for cataloging as well as being used to identify forgeries (heritage appreciation), important for collectors.
Investigação de elementos químicos em sangue total de judocas utilizando a técnica de fluorescência de raios X
2022 - ALMEIDA, MATEUS R. de
O objetivo do presente estudo foi direcionado a avaliação de elementos químicos, de relevância nutricional e clínica, em sangue total de judocas submetidos a plano alimentar balanceado com suplementos (G1) e sem suplementação (G2) visando maior entendimento das necessidades nutricionais e adequação das necessidades diárias em função do desempenho esportivo, uma vez que pequenas variações desses elementos podem levar a perda de rendimento e deixar o organismo vulnerável aos problemas de ordem patológica. As coletas de sangue total foram realizadas após 6 meses da implantação do protocolo nutricional para posterior comparação entre os grupos (G1 e G2). Para essa análise foram empregadas as técnicas de Fluorescência de Raios X por Dispersão de Energia (FRXDE) e Análise por Ativação com Nêutrons (AAN). Estas técnicas analíticas são complementares e possibilitaram a análise quantitativa dos elementos Br, Ca, Cl, Fe, K, Na, P, Rb, S e Zn compondo dados de uso na medicina esportiva que podem beneficiar o atleta durante o treino e recuperação. Verificou-se que as dosagens de Cl, K, P e S em sangue total para todos os judocas encontram-se dentro dos intervalos de normalidade, independente do controle alimentar. Entretanto, as dosagens dos demais elementos mostraram variações, tanto para G1 como para G2 em relação ao grupo de controle, quando as comparações foram realizadas em função do gênero. Os resultados mostram a necessidade de adotar dieta personalizada, otimizando o desempenho e recuperação dos judocas, além de contribuir para a proposição de novos protocolos de avaliação nutricional e clínica ainda não descritos na literatura.
Young Scientist Project
2022 - GIOVANNI, D.N.S.; KOKA, A.C.S.S.; ALMEIDA, M.R.; ZAMBONI, C.B.
The use of Information and Communication Technologies (ICT) has facilitated the dissemination of nuclear knowledge and, at the same time, improved relations between specialists working in different areas of science. The growing number of initiatives, on the part of Research Centers, Universities, and even on an individual basis has been positive through social networks, websites, and blogs. The Young Scientist Project was created in 2019, by the team of the Spectroscopy and Spectrometry of Radiation Laboratory at IPEN, with the proposal to implement nuclear knowledge. The aim is to present alternative proposals for knowledge, application, and dissemination of science, with an emphasis on demystifying the nuclear sciences. The website (www.jovemcientista.com.br) design involves four menus: REPORTS where researchers talk about their career, challenges, and perspectives in the field; NUCLEAR MINUTE: where nuclear physics concepts are covered in one-minute videos; CURIOSITIES: a space where various topics are presented, whose objective is to dialogue between the various areas of scientific knowledge. In addition, within this menu, scientific content from other media is available in GARIMPO, and the menu INTERVIEWS: conducted by students to discuss its work. All the content produced on this website is available in various social media, such as, the YouTube channel (Jovem Cientista), the profile on Instagram (@jovemcientista.com.br) associated with a Facebook page (@jovemcientista.com.br), the profile on TikTok (@jovemcientista.com.br) and by Linkedin and Twiter in the editors' profile. In addition, the site provides a communication channel with the entire team. Since its creation, content has been developed in the nuclear area from basic concepts to applications of radiation in different areas, such as, the environment, dosimetry, and health, among others. The possibility of using ICT has been positive, helping to demystify and disseminate nuclear physics.
X-ray experimental set-up for in-vivo nail test
2022 - ZAMBONI, C.B.; GIOVANNI, D.N.S.; ALMEIDA, M.R.; TODO, A.S.; RODRIGUES JUNIOR, O.
Propostas alternativas para o conhecimento e uso da Energia Nuclear
2022 - ZAMBONI, C.B.; GIOVANNI, D.N.S.; KOKA, A.C.; ALMEIDA, M.R.; MEDEIROS, I.M.M.A.; LEAO, A.R.
Análise de zinco em sangue de corredores de longa distancia
2021 - SILVA, DALTON G.N. da; ZAMBONI, CIBELE B.; ALMEIDA, MATEUS R. de; MEDEIROS, JOSE A.G. de
O objetivo deste estudo foi avaliar o zinco no sangue de atletas por metodologia de ativação de nêutrons. Os resultados mostraram deficiência de zinco para a maioria dos atletas. O estudo mostrou a eficácia da utilização desse procedimento analítico para sucessivas avaliações clínicas, durante o período de preparação das competições, fornecendo dados que auxiliam na elaboração de uma dieta balanceada, bem como contribuem para a proposição de novos protocolos de avaliação clínica.
Análise de zinco em sangue de corredores de longa distância
2019 - ZAMBONI, CIBELE B.; ALMEIDA, MATEUS R. de; MEDEIROS, JOSE A.G. de
Ions concentration in blood samples of SJL/J dystrophic mice strains using X-ray fluorescence spectrometry
2019 - GIOVANNI, D.N.S.; ALMEIDA, M.R.; ZAMBONI, C.B.; METAIRON, S.; BALDUINO, K.N.; SUZUKI, M.F.; BUENO JUNIOR, C.R.
Star This study proposes an investigation of ions in whole blood of the dystrophic animal model SJL/J (mice strain with dysferlin protein deficiency) and in the control group (C57BL/6J) using the Energy Dispersive X-ray Fluorescence (EDXRF) spectrometry technique. The comparison between control and dystrophic mice results shown an increase in blood for P, S, K and Fe (p < 0.05) while a decrease in Ca (p < 0.05). This elemental analysis will contribute to evaluate the best diagnostic, care and treatment procedures, for the Progressive Muscular Dystrophy.
Sulfur status in judo athletes by XRF
2019 - ALMEIDA, M.R.; ZAMBONI, C.B.; GIOVANNI, D.N.S.; AZEVEDO, M.R.A.
The human biomonitoring, measurement of chemical and/or their metabolites in human fluids, is an important tool for assessing the health condition of subjects, included athletes. In this study, sulfur levels were investigated in blood of judo athletes using Energy Dispersive X-ray Fluorescence (EDXRF) technique. Twenty athletes participated of this study. Two groups of athletes were selected: judo with a balanced diet with multivitamin/mineral supplements consumption and judo with diet not controlled. These data were compared with the control group (subjects of the same age but not involved with physical activities). There was a significant increase of S levels in athletes with diet not controlled. These data can be useful to a well-planned nutritional proposition that can contribute to better performance of athletes.