Search

Your search keyword '"Batista de Carvalho, Luís A.E."' showing total 11 results
Start Over Author "Batista de Carvalho, Luís A.E."
11 results on '"Batista de Carvalho, Luís A.E."'

4. Spectroscopic characterization and efflux pump modulation of a thiophene curcumin derivative

Author

Oliveira, Mauro M., Santos, Helcio S., Coutinho, Henrique D.M., Bandeira, Paulo N., da Silva, Priscila T., Freitas, Thiago S., Rocha, Janaina E., Xavier, Jayze C., Campina, Fabia F., Barbosa, Cristina R.S., Araújo Neto, José B., Pereira, Raimundo L.S., Silva, Maria M.C., Muniz, Débora F., Teixeira, Alexandre M.R., Frota, Vanessa M., Rodrigues, Tigressa H.S., Amado, Ana M., Marques, Maria P.M., Batista de Carvalho, Luis A.E., and Nogueira, Carlos E.S.

Published
2020
Full Text
View/download PDF

6. XRF identification of sharp-force trauma in fresh and dry human bone under varied experimental heat conditions.

Author

Rosa, Joana, Batista de Carvalho, Luís A.E., Marques, Maria Paula M., Ferreira, Maria Teresa, Gonçalves, David, and Gil, Francisco P.S.C.

Subjects
HUMAN beings, DIAGENESIS, CLAVICLE
Abstract

• XRF can detect Fe traces from blades in fresh human bone. • XRF can detect Fe traces from blades in human bone burned fresh. • XRF is not useful to detect blade traces in bone that has been previously inhumed. Heat-induced fractures can be hard to distinguish from sharp force traumas. This challenge can negatively impact medico-legal analysis. The present study aimed to experimentally assess if X-ray fluorescence (XRF) can be used to detect chemical traces transferred from the blade of a sharp instrument onto both fresh and dry human bones. This was performed by inducing sharp force traumas with five different instruments on 20 fresh and 20 dry human clavicles. All bone samples were probed before and after experimental burning (at 500 °C, 700 °C, 900 °C and 1100 °C). Our results show that XRF is potentially useful for detecting iron traces in fresh human bone, both unburned and burned. However, we were not able to clearly detect iron traces from the blades in bones that have been previously inhumed, since exogenous iron acquired during diagenesis masks the iron traces originating from the blade. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

9. Surface Enhanced Raman Spectroscopy for Quantitative Analysis: Results of a Large-Scale European Multi-Instrument Interlaboratory Study

Author

Fornasaro, Stefano, Alsamad, Fatima, Baia, Monica, Batista de Carvalho, Luís A.E., Beleites, Claudia, Byrne, Hugh J., Chiadò, Alessandro, Chis, Mihaela, Chisanga, Malama, Daniel, Amuthachelvi, Dybas, Jakub, Eppe, Gauthier, Falgayrac, Guillaume, Faulds, Karen, Gebavi, Hrvoje, Giorgis, Fabrizio, Goodacre, Royston, Graham, Duncan, La Manna, Pietro, Laing, Stacey, Litti, Lucio, Lyng, Fiona M., Malek, Kamilla, Malherbe, Cedric, Marques, Maria P .., Meneghetti, Moreno, Mitri, Elisa, Mohaček-Grošev, Vlasta, Morasso, Carlo, Muhamadali, Howbeer, Musto, Pellegrino, Novara, Chiara, Pannico, Marianna, Penel, Guillaume, Piot, Olivier, Rindzevicius, Tomas, Rusu, Elena A., Schmidt, Michael S., Sergo, Valter, Sockalingum, Ganesh D., Untereiner, Valérie, Vanna, Renzo, Wiercigroch, Ewelina, Bonifacio, Alois, Fornasaro, Stefano, Alsamad, Fatima, Baia, Monica, Batista de Carvalho, Luís A.E., Beleites, Claudia, Byrne, Hugh J., Chiadò, Alessandro, Chis, Mihaela, Chisanga, Malama, Daniel, Amuthachelvi, Dybas, Jakub, Eppe, Gauthier, Falgayrac, Guillaume, Faulds, Karen, Gebavi, Hrvoje, Giorgis, Fabrizio, Goodacre, Royston, Graham, Duncan, La Manna, Pietro, Laing, Stacey, Litti, Lucio, Lyng, Fiona M., Malek, Kamilla, Malherbe, Cedric, Marques, Maria P .., Meneghetti, Moreno, Mitri, Elisa, Mohaček-Grošev, Vlasta, Morasso, Carlo, Muhamadali, Howbeer, Musto, Pellegrino, Novara, Chiara, Pannico, Marianna, Penel, Guillaume, Piot, Olivier, Rindzevicius, Tomas, Rusu, Elena A., Schmidt, Michael S., Sergo, Valter, Sockalingum, Ganesh D., Untereiner, Valérie, Vanna, Renzo, Wiercigroch, Ewelina, and Bonifacio, Alois

Abstract

Surface-enhanced Raman scattering (SERS) is a powerful and sensitive technique for the detection of fingerprint signals of molecules and for the investigation of a series of surface chemical reactions. Many studies introduced quantitative applications of SERS in various fields, and several SERS methods have been implemented for each specific application, ranging in performance characteristics, analytes used, instruments, and analytical matrices. In general, very few methods have been validated according to international guidelines. As a consequence, the application of SERS in highly regulated environments is still considered risky, and the perception of a poorly reproducible and insufficiently robust analytical technique has persistently retarded its routine implementation. Collaborative trials are a type of interlaboratory study (ILS) frequently performed to ascertain the quality of a single analytical method. The idea of an ILS of quantification with SERS arose within the framework of Working Group 1 (WG1) of the EU COST Action BM1401 Raman4Clinics in an effort to overcome the problematic perception of quantitative SERS methods. Here, we report the first interlaboratory SERS study ever conducted, involving 15 laboratories and 44 researchers. In this study, we tried to define a methodology to assess the reproducibility and trueness of a quantitative SERS method and to compare different methods. In our opinion, this is a first important step toward a "standardization" process of SERS protocols, not proposed by a single laboratory but by a larger community.

Published
2020

Catalog

Books, media, physical & digital resources
See catalog results