MATEUS RAMOS DE ALMEIDA

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2019 - 201912020 - 20231
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Agência de fomento: Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) × Assunto: sulfur ×

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    Artigo IPEN-doc 30217
    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.
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    Artigo IPEN-doc 25899
    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.