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Hire Dr. Rafael A.

Brazil

USD 50 /hr

Msc, PhD candidate Toxicology | Risk Assessment | Statistical Analysis in R | Systematic Review

Profile Summary

I am a Pharmacist and PhD Candidate in Pharmaceutical Sciences (Toxicology) at UNIFAL-MG, Brazil, with 9+ years of operational experience as a military firefighter at the Minas Gerais Military Fire Department (CBMMG). My research bridges frontline occupational health with rigorous academic science: I investigate the health impacts of wildland fire smoke on firefighters, focusing on PAH exposure assessment, oxidative DNA damage, and biomarker development within a One Health framework. I specialize in providing evidence-based scientific support for researchers, graduate students, and health-tech initiatives. My core technical expertise includes: 🔬 Human Biomonitoring & Risk Assessment: PAH metabolite quantification (LC-MS/MS), oxidative stress biomarkers (8-OHdG), and quantitative risk modeling (ILCR, HQ, BMD). 📊 Statistical Analysis & Data Science: Experimental design, longitudinal/cohort data analysis, dose-response modeling, and reproducible workflows in R (tidyverse, ggplot2). 🧪 Method Development & Validation: Analytical method optimization for complex biological matrices, aligned with OECD/USEPA guidelines. 💻 Computational Toxicology & NAMs: In silico approaches and alternative methods to reduce animal testing in chemical risk assessment. 📝 Scientific Writing & Peer Review: Author of publications in Environmental Pollution and Critical Reviews in Toxicology (JCR-indexed); active reviewer for occupational and environmental health journals. I offer freelance consulting services for: • Statistical analysis and data visualization for academic theses and research projects • Systematic reviews and critical appraisal of toxicological literature • Methodological support in occupational toxicology and environmental health studies • Risk assessment frameworks aligned with international guidelines (USEPA, OECD) All work is delivered with scientific rigor, ethical transparency, and clear communication. I am fluent in Portuguese and English, and available for remote collaborations worldwide. Let's discuss how I can support your next research project.

Subject Matter Expertise

• ☆ Biostatistics
• ☆ Biochemistry
• ☆ Biochemical Assays
• ☆ Oxidative Stress & Mitochondrial Function
• ☆ Biomarker Discovery

Services

• Writing
• Research
• Consulting
• Data & AI

Writing Medical Writing, Technical Writing, Creative Writing, General Proofreading & Editing

Research Gray Literature Search, Scientific and Technical Research, Systematic Literature Review

Consulting Scientific and Technical Consulting

Data & AI Statistical Analysis, Data Visualization, Data Mining, Data Cleaning, Data Processing

Work Experience

PhD Researcher: Pharmaceutical Sciences

Universidade Federal de Alfenas (UNIFAL-MG)

April 2025 - Present

Health Technical Analyst

Minas Gerais Military Fire Department (CBMMG)

March 2017 - Present

Education

Mestrando (Programa de Pós Graduaçao em Ciencias Farmaceuticas)

Universidade Federal de Alfenas Escola de Farmácia e Odontologia de Alfenas

March 2022 - March 2024

Graduação em Farmácia

Universidade Federal de Alfenas

2014 - 2021

Certifications

• Certification details not provided.

Publications

JOURNAL ARTICLE

Rafael Araújo Silva, André Augusto Vilela Lima, Rodrigo Severo Caixeta, Gabriel Henrique Savietto, Fernando Barbosa Junior, Marília Cristina Oliveira Souza, Maria José Nunes de Paiva, Isarita Martins (2026). Association between oxidative DNA damage and PAH exposure in Brazilian wildland firefighters . Environmental Pollution.

Rafael Araújo Silva, Elizeu Chiodi Pereira, Kelly Polido Kaneshiro Olympio, Maria José Nunes de Paiva, Isarita Martins (2025). Human biomonitoring and risks of hazardous occupational exposure to polycyclic aromatic hydrocarbons in wildland fires: a critical review . Critical Reviews in Toxicology.

Araujo Silva, Rafael, Chiodi Pereira, Elizeu Chiodi, Olympio, Kelly Polido Kaneshiro, Nunes de Paiva, Maria Jose, Martins, Isarita (2025). Human biomonitoring and risks of hazardous occupational exposure to polycyclic aromatic hydrocarbons in wildland fires: a critical review . Critical Reviews in Toxicology.

Rafael Araujo Silva, Lorena Espina Coelis, Rafaella Santos Pereira, Daniela Santos Angonesi (2025). Impacto ocupacional da Covid-19 em bombeiros militares: um estudo de coorte sobre incidência, reinfecção e absenteísmo . Revista Brasileira de Saúde Ocupacional.

Rafael Araujo Silva, Lorena Espina Coelis, Rafaella Santos Pereira, Daniela Santos Angonesi (2025). Occupational impact of COVID-19 on military firefighters: A cohort study of incidence, reinfection, and absenteeism . Revista Brasileira de Saúde Ocupacional.

Rafael Araujo Silva, Lorena Espina Coelis, Rafaella Santos Pereira, Daniela Santos Angonesi (2025). Occupational impact of COVID-19 on military firefighters: A cohort study of incidence, reinfection, and absenteeism . Revista Brasileira de Saúde Ocupacional.

RAFAEL ARAÚJO SILVA, MARIA JOSÉ NUNES DE PAIVA, ISARITA MARTINS (2025). PERCEPÇÃO DE RISCO À SAÚDE E EXPOSIÇÃO OCUPACIONAL AOS INCÊNDIOS FLORESTAIS EM BOMBEIROS MILITARES DE BELO HORIZONTE-MG . Vigiles.

ARAÚJO SILVA, RAFAEL, NUNES DE PAIVA, MARIA JOSÉ, MARTINS, ISARITA (2025). PERCEPÇÃO DE RISCO À SAÚDE E EXPOSIÇÃO OCUPACIONAL AOS INCÊNDIOS FLORESTAIS EM BOMBEIROS MILITARES DE BELO HORIZONTE-MG . Vigiles.