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Hire Dr. Mirosław J.

Japan

USD 45 /hr

Scientific Data Scientist | Physics, Radiation Detection & Radon Specialist | R & Python Expert

Profile Summary

I am a Scientific Researcher and Data Analyst specialized in nuclear physics, radiation detection, and environmental monitoring, with over 30 years of experience in the field. My expertise lies at the intersection of physical modeling and advanced statistical computing, helping organizations translate complex sensor data into actionable insights. Core Expertise: - Radiation Physics & Radon: Extensive experience in radon measurement protocols, detector calibration (RadonEye, RAD7), and progeny behavior modeling. - Scientific Computing: Expert-level proficiency in R (tidyverse, ggplot2, Shiny) and Python (Pandas, Streamlit) for data cleaning, statistical analysis, and interactive visualization. - Modeling & Simulation: Skilled in using PHITS for particle and heavy ion transport simulations to support experimental research. - Research & Communication: Proven track record in academic publishing, regulatory standards (EU, Poland, Japan), and simplifying complex scientific concepts for diverse audiences. Selected Projects & Experience: - Data Analysis Frameworks: Developed automated pipelines for environmental sensor data, reducing processing time and improving measurement accuracy. - Environmental Monitoring: Led research projects focused on radon mitigation and its intersection with public health and medical physics (Targeted Alpha Therapy). - Web-Based Research Tools: Designed and maintained interactive web applications for scientific data management using PHP, SQL, and Bootstrap. I hold a PhD in Physics and currently operate within the international research community in Japan. Whether you need a sophisticated statistical model, a publication-ready data visualization, or expert consultancy on radiation detection systems, I provide rigorous, science-based solutions tailored to your technical requirements.

Subject Matter Expertise

• ☆ Data Analysis
• ☆ Computer Simulation/Computational Modeling
• ☆ Data Processing
• ☆ Data Exploration
• ☆ Cluster Analysis
• ☆ Data Visualization
• ☆ Data Collection
• ☆ Data Management
• ☆ Data Manipulation
• ☆ Machine Learning
• ☆ Data Mining
• ☆ Data Cleaning
• ☆ Neural Networks
• ☆ Pattern Recognition
• ☆ Artificial Intelligence
• ☆ Deep Learning
• ☆ Business Analytics
• ☆ Earth & Atmospheric Science
• ☆ Climate Science
• ☆ Atmospheric Chemistry
• ☆ Environmental Science
• ☆ Environmental Health
• ☆ Environmental Statistics
• ☆ Fluid Dynamics
• ☆ Applied Physics
• ☆ Mass Transfer

Services

• Writing
• Research
• Consulting
• Data & AI
• Product Development

Writing Non-Medical Regulatory Writing, Technical Writing, General Proofreading & Editing

Research Meta-Research, Gap Analysis, Scientific and Technical Research, Systematic Literature Review, Secondary Data Collection

Consulting Scientific and Technical Consulting, Regulatory Consulting

Data & AI Predictive Modeling, Statistical Analysis, Algorithm Design-Non ML, Algorithm Design-ML, Data Visualization, Text Mining & Analytics, Data Mining, Data Cleaning, Data Processing, Data Insights

Product Development Product Evaluation, Product Validation, Quality Assurance & Control (QA/QC), Concept Development

Work Experience

Researcher

National Institutes for Quantum and Radiological Science and Technology: Chiba, JP

- Present

Researcher

QST, Japan

January 2019 - Present

Resarcher

NIRS, Japan

April 2009 - December 2018

Senior Researcher

IFJ PAN, Poland

January 1998 - December 2012

JSPS Postdoc Fellow

NIRS, Japan

August 2007 - August 2009

Education

Ph.D. (Physics)

IFJ PAN, Poland

January 2002 - May 2006

Certifications

• Will be updated...

  NA

  February 2025 - March 2026

Publications

JOURNAL ARTICLE

Miroslaw Janik, Jun Ichinose, Kotaro Nagatsu, Satoshi Kodaira (2026). Humidity-dependent radon retention in zeolite and non-zeolite sorbents for 225Ac production facilities . Applied Radiation and Isotopes.

Miroslaw Janik, Mashiro Hosoda, Shinji Tokonami, Yasutaka Omori, Naofumi Akata (2025). Evaluating Soil Temperature Variations for Enhanced Radon Monitoring in Volcanic Regions . Atmosphere.

Peter Bossew, Eleonora Benà, Scott Chambers, Miroslaw Janik (2024). Analysis of Outdoor and Indoor Radon Concentration Time Series Recorded with RadonEye Monitors . Atmosphere.

Rio Furukawa, Miroslaw Janik, Satoshi Kodaira, Hiroki Hashimoto, Yasutaka Omori, Shinji Tokonami, Masahiro Hosoda, Morihito Shimizu, Seiya Manabe, Tetsuro Matsumoto, et al. (2024). Evaluation of an ionization chamber characteristics for 222Rn calibration . Radiation Protection Dosimetry.

Satoshi Kodaira, Miroslaw Janik (2024). Spectroscopic analysis of alpha particles from radioactive nuclides with CR-39 plastic nuclear track detectors . Radiation Protection Dosimetry.

Md. Mahamudul Hasan, Miroslaw Janik, Shikha Pervin, Takeshi Iimoto (2023). Preliminary Population Exposure to Indoor Radon and Thoron in Dhaka City, Bangladesh . Atmosphere.

Miroslaw Janik, Peter Bossew, Md. Mahamudul Hasan, Giorgia Cinelli (2023). Indoor Radon Research in the Asia-Pacific Region . Atmosphere.

Javier Elío, Eric Petermann, Peter Bossew, Miroslaw Janik (2023). Machine learning in environmental radon science . Applied Radiation and Isotopes.

Radon Exposure in the Underground Tourist Route–Historic Silver Mine in Tarnowskie Góry, Poland <head> <META HTTP-EQUIV="Refresh" CONTENT="0;URL=/servlet/useragent"> </head> . International Journal of Environmental Research and Public Health.

Miroslaw Janik (2022). Environmental Radioactivity Monitoring and Measurements: Radon and Thoron . International Journal of Environmental Research and Public Health.

Miroslaw Janik and Md. Mahamudul Hasan and Peter Bossew and Norbert Kavasi(2021). Effects of Storage Time and Pre-Etching Treatment of CR-39 Detectors on Their Response to Alpha Radiation Exposure . International Journal of Environmental Research and Public Health. 18. (16). p. 8346. {MDPI} {AG}

Masahiro Hosoda, Shinji Tokonami, Takahito Suzuki, Miroslaw Janik(2020). Machine learning as a tool for analysing the impact of environmental parameters on the radon exhalation rate from soil . Radiation Measurements. 138. p. 106402. Elsevier {BV}

Mirosław Janik, Yuki Tamakuma, Chutima Kranrod, Takahito Suzuki, Yuki Watanabe, Thamaborn Ploykrathok, Ryoju Negami, Eka Djatnika Nugraha, Kazuki Iwaoka, Masahiro Hosoda, et al.(2020). Passive-Type Radon Monitor Constructed Using a Small Container for Personal Dosimetry . International Journal of Environmental Research and Public Health. 17. (16). p. 5660. {MDPI} {AG}

Yasutaka Omori, Michikuni Shimo, Miroslaw Janik, Tetsuo Ishikawa, Hidenori Yonehara(2020). Variable Strength in Thoron Interference for a Diffusion-Type Radon Monitor Depending on Ventilation of the Outer Air . International Journal of Environmental Research and Public Health. 17. (3). p. 974. {MDPI} {AG}

Miroslaw Janik, Shinji Tokonami, Kazuki Iwaoka, Naregundi Karunakara, Shetty Trilochana, Mandya Purushotham Mohan, Sudeep Kumara, Indaje Yashodhara, Weihai Zhuo, Chao Zhao, et al. (2019). Comparison of Radon and Thoron Concentration Measuring Systems Among Asian Countries . International Journal of Environmental Research and Public Health.

Trilochana, S., Somashekarappa, H.M., Kumara, K.S., Mohan, M.P., Nayak, S.R., D&#39;Souza, R.S., Kamath, S.S., Sahoo, B.K., Gaware, J.J., Sapra, B.K., et al.(2019). A WALK-IN TYPE CALIBRATION CHAMBER FACILITY FOR 222Rn MEASURING DEVICES AND INTER-COMPARISON EXERCISES . Radiation protection dosimetry. 187. (4). p. 466-481.

Sorimachi, A., Tokonami, S., Omori, Y., Janik, M., Iwaoka, K., Ishikawa, T., Sun, Q.(2019). Characteristics of indoor radon and thoron concentrations in cave dwellings in gansu province, China . Radiation Protection Dosimetry. 184. (3-4). p. 457-462.

Higuchi, S., Kamishiro, Y., Ishihara, M., Yasuoka, Y., Mori, Y., Hosoda, M., Iwaoka, K., Tokonami, S., Takahashi, R., Janik, M., et al.(2019). Evaluation of a radon air monitor in the measurement of radon concentration in water in comparison with a liquid scintillation counter . Radiation Protection Dosimetry. 184. (3-4). p. 426-429.

Igarashi, Y., Nozaki, T., Mizuno, H., Kuroki, T., Uchida, Y., Janik, M., Iimoto, T.(2019). Preliminary technical discussion on a new radon and its progeny continuous monitor using two-filter method . Radiation Protection Dosimetry. 184. (3-4). p. 418-421.

M. Janik, P. Bossew, O. Kurihara(2018). Machine learning methods as a tool to analyse incomplete or irregularly sampled radon time series data . Science of The Total Environment. 630. p. 1155--1167. Elsevier {BV}

Ross Kleinschmidt, Drew Watson, Miroslaw Janik, Gavin Gillmore(2018). The presence and dosimetry of radon and thoron in a historical, underground metalliferous mine . Journal of Sustainable Mining. 17. (3). p. 120--130. Elsevier {BV}

Kato, T., Janik, M., Kanda, R., Ishikawa, T., Kawase, M., Kawamoto, T.(2018). Environmentally Friendly Measurement of Airborne Radon Using a Nonvolatile Liquid Scintillation Absorbent . Health Physics. 115. (2). p. 203-211.

Janik, M., Al-Azmi, D., Sahoo, S.K.(2018). The screening indoor radon and preliminary study of indoor thoron concentration levels in Kuwait . Radiation Protection Dosimetry. 181. (3). p. 246-254.

Tommasino, L., Chen, J., Falcomer, R., Janik, M., Kanda, R., DeFelice, F., Cardellini, F., Trevisi, R., Leonardi, F., Magnoni, M., et al.(2017). An international cooperation by using an all-encompassing passive radon monitor . Radiation Protection Dosimetry. 177. (1-2). p. 12-15.

Sorimachi, A., Janik, M., Tokonami, S., Ishikawa, T.(2016). An intercomparison done at NIRS, Japan on continuous monitors for measuring ²²⁰Rn concentration . Applied Radiation and Isotopes. 107. p. 145-151.

Janik, M., Bossew, P.(2016). Analysis of simultaneous time series of indoor, outdoor and soil air radon concentrations, meteorological and seismic data . Nukleonika. 61. (3). p. 295-302.

Kato, T., Janik, M., Kanda, R., Ishikawa, T., Kawase, M., Kawamoto, T.(2016). Measurement of radon in air using a radon-²¹⁸Po calibration curve determined by an absorptive non-volatile liquid scintillator . Radiation Measurements. 95. p. 25-30.

Janik, M., Ploc, O., Fiederle, M., Procz, S., Kavasi, N.(2016). Optimization of the Timepix chip to measurement of radon, thoron and their progenies . Applied Radiation and Isotopes. 107. p. 220-224.

Janik, M., Omori, Y., Yonehara, H.(2015). Influence of humidity on radon and thoron exhalation rates from building materials . Applied Radiation and Isotopes. 95. p. 102-107.

Tan, Y., Ishikawa, T., Janik, M., Tokonami, S., Hosoda, M., Sorimachi, A., Kearfott, K.(2015). Novel method for estimation of the indoor-to-outdoor airborne radioactivity ratio following the Fukushima Daiichi Nuclear Power Plant accident . Science of the Total Environment. 536. p. 25-30.

Sa&#239;dou, Tokonami, S., Janik, M., Samuel, B.G., Abdourahimi, Joseph Emmanuel, N.N.(2015). Radon-thoron discriminative measurements in the high natural radiation areas of southwestern Cameroon . Journal of Environmental Radioactivity. 150. p. 242-246.

Janik, M., Yonehara, H.(2015). The most recent international intercomparisons of radon and thoron monitors with the NIRS radon and thoron chambers . Radiation Protection Dosimetry. 164. (4). p. 595-600.

K&#225;v&#225;si, N., Vigh, T., N&#233;meth, C., Ishikawa, T., Omori, Y., Janik, M., Yonehara, H.(2014). Invited Article: In situ comparison of passive radon-thoron discriminative monitors at subsurface workplaces in Hungary . Review of Scientific Instruments. 85. (2).

Janik, M., Ishikawa, T., Omori, Y., Kavasi, N.(2014). Invited Article: Radon and thoron intercomparison experiments for integrated monitors at NIRS, Japan . Review of Scientific Instruments. 85. (2).

Janik, M., Kavasi, N., Matey, J.R.(2014). Preface: Radon-thoron instrumentation and measurement . Review of Scientific Instruments. 85. (2).

Ishikawa, T., Sorimachi, A., Arae, H., Sahoo, S.K., Janik, M., Hosoda, M., Tokonami, S.(2014). Simultaneous sampling of indoor and outdoor airborne radioactivity after the Fukushima Daiichi nuclear power plant accident . Environmental Science and Technology. 48. (4). p. 2430-2435.

Janik, M., Tokonami, S., Kranrod, C., Sorimachi, A., Ishikawa, T., Hosoda, M., McLaughlin, J., Chang, B.-U., Kim, Y.J.(2013). Comparative analysis of radon, thoron and thoron progeny concentration measurements . Journal of radiation research. 54. (4). p. 597-610.

Tajika, Y., Yasuoka, Y., Nagahama, H., Suzuki, T., Homma, Y., Ishikawa, T., Tokonami, S., Mukai, T., Janik, M., Sorimachi, A., et al.(2013). Radon concentration of outdoor air: Measured by an ionization chamber for radioisotope monitoring system at radioisotope institute . Journal of Radioanalytical and Nuclear Chemistry. 295. (3). p. 1709-1714.

Janik, M., Łoskiewicz, J., Tokonami, S., Kozak, K., Mazur, J., Ishikawa, T.(2012). Determination of the minimum measurement time for estimating long-term mean radon concentration . Radiation Protection Dosimetry. 152. (1-3). p. 168-173.

Chen, J., Moir, D., Sorimachi, A., Janik, M., Tokonami, S.(2012). Determination of thoron equilibrium factor from simultaneous long-term thoron and its progeny measurements . Radiation Protection Dosimetry. 149. (2). p. 155-158.

Omori, Y., Janik, M., Sorimachi, A., Ishikawa, T., Tokonami, S.(2012). Effects of air exchange property of passive-type radon-thoron discriminative detectors on performance of radon and thoron measurements . Radiation Protection Dosimetry. 152. (1-3). p. 140-145.

Prasad, G., Ishikawa, T., Hosoda, M., Sorimachi, A., Janik, M., Sahoo, S.K., Tokonami, S., Uchida, S.(2012). Estimation of radon diffusion coefficients in soil using an updated experimental system . Review of Scientific Instruments. 83. (9).

Tokonami, S., Janik, M., Chen, J., Sorimachi, A., Ishikawa, T.(2012). International symposium on the natural radiation exposures and low-dose radiation epidemiological studies . Radiation Protection Dosimetry. 152. (1-3).

Ramola, R.C., Gusain, G.S., Rautela, B.S., Sagar, D.V., Prasad, G., Shahoo, S.K., Ishikawa, T., Omori, Y., Janik, M., Sorimachi, A., et al.(2012). Levels of thoron and progeny in high background radiation area of southeastern coast of Odisha, India . Radiation Protection Dosimetry. 152. (1-3). p. 62-65.

Kozak, K., Kozłowska, B., Przylibski, T.A., Mazur, J., Adamczyk-Lorenc, A., Mamont-Cieśla, K., Stawarz, O., Dorda, J., Kłos, B., Janik, M., et al.(2012). Intercomparison measurements of ²²²Rn concentration in water samples in Poland . Radiation Measurements. 47. (1). p. 89-95.

PREPRINT

Miroslaw Janik, Mashiro Hosoda, Shinji Tokonami, Yasutaka Omori, Naofumi Akata (2025). Evaluating Soil Temperature Variations for Enhanced Radon Monitoring in Volcanic Regions .

Peter Bossew, Eleonora Ben&#224;, Scott Chambers, Miroslaw Janik (2024). Analysis of Outdoor and Indoor Radon Concentration Time Series Recorded with RadonEye Monitors .

OTHER

Miroslaw Janik, Christopher Gomez, Satoshi Kodaira, Md. Mahamudul Hasan (2024). Preliminary results of spatial distribution of radon and thoron with associated parameters in soil around active faults in Japan .

BOOK

Tokonami, S., Sorimachi, A., Janik, M., Kavasi, N., Hosoda, M., Ishikawa, T.(2012). Critical problem on radon (²²²RN) measurements due to thoron (²²⁰RN) interference . Handbook of Radon: Properties, Applications and Health. p. 371-387.

Tokonami, S., Sorimachi, A., Janik, M., Kavasi, N., Hosoda, M., Ishikawa, T.(2012). Critical problem on radon (²²²RN) measurements due to thoron (²²⁰RN) interference . Handbook Of Academic Performance: Predictors, Learning Strategies And Influences Of Gender. p. 371-387.