P
Percio A. M. Farias
Researcher at Pontifical Catholic University of Rio de Janeiro
Publications - 68
Citations - 3179
Percio A. M. Farias is an academic researcher from Pontifical Catholic University of Rio de Janeiro. The author has contributed to research in topics: Adsorptive stripping voltammetry & Voltammetry. The author has an hindex of 20, co-authored 68 publications receiving 3062 citations. Previous affiliations of Percio A. M. Farias include Academy of Sciences of the Czech Republic & New Mexico State University.
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Journal ArticleDOI
Bismuth-coated carbon electrodes for anodic stripping voltammetry
TL;DR: Stripping voltammetric measurements of microgram per liter levels of cadmium, lead, thallium, and zinc in nondeaerated solutions yielded well-defined peaks, along with a low background, following short deposition periods, indicating great promise to centralized and decentralized testing of trace metals.
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Peptide Nucleic Acid Probes for Sequence-Specific DNA Biosensors
Joseph Wang,Emil Paleček,Peter E. Nielsen,Gustavo A. Rivas,Xiaohua Cai,Haruki Shiraishi,Narasaiah Dontha,and Denbai Luo,Percio A. M. Farias +8 more
TL;DR: PNA recognition layers thus offer significant advantages for sequence-specific DNA biosensors, compared to their DNA counterparts, including significantly higher sensitivity and specificity, faster hybridization at room and elevated temperatures, minimal dependence on ionic strength, and use of shorter probes.
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DNA electrochemical biosensor for the detection of short DNA sequences related to the human immunodeficiency virus.
Joseph Wang,Xiaohua Cai,Gustavo A. Rivas,Haruki Shiraishi,Percio A. M. Farias,Narasaiah Dontha +5 more
TL;DR: An electrochemical biosensor for the detection of short DNA sequences related to the human immunodeficiency virus type 1 (HIV-1) and the direct adsorptive chronopotentiometric stripping measurements of trace levels of various HIV-1 DNAs are reported.
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DNA electrochemical biosensors for environmental monitoring. A review
J. Wang,Gustavo A. Rivas,Xiaohua Cai,Emil Paleček,Peter E. Nielsen,Haruki Shiraishi,Narasaiah Dontha,Denbei Luo,Concepción Parrado,Manuel Chicharro,Percio A. M. Farias,Florenda S. Valera,Douglas H. Grant,Mehmet Ozsoz,M.N. Flair +14 more
TL;DR: This review describes recent efforts aimed at coupling nucleic acid recognition layers with electrochemical transducers, and considers DNA hybridization sensors for sequences related to microbial or viral pathogens, and DNA-modified carbon electrodes for monitoring low molecular weight priority pollutants interacting with the surfaceconfined DNA.
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DNA biosensor for the detection of hydrazines.
Joseph Wang,Manuel Chicharro,Gustavo A. Rivas,Xiaohua Cai,Narasaiah Dontha,Percio A. M. Farias,Haruki Shiraishi +6 more
TL;DR: A double-stranded DNA-coated carbon paste electrode is employed as a remarkably sensitive biosensor for the detection of hydrazine compounds and its response mechanism is discussed, along with prospects of using DNA biosensors for quantitaing other important molecules and elucidating DNA interactions and damage.