S
S. Dimitrov
Researcher at United States Environmental Protection Agency
Publications - 42
Citations - 1760
S. Dimitrov is an academic researcher from United States Environmental Protection Agency. The author has contributed to research in topics: Applicability domain & Bioconcentration. The author has an hindex of 23, co-authored 42 publications receiving 1601 citations.
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Journal ArticleDOI
A stepwise approach for defining the applicability domain of SAR and QSAR models.
S. Dimitrov,Gergana Dimitrova,Todor Pavlov,Nadezhda Dimitrova,Grace Patlewicz,Jay Russell Niemelä,Ovanes Mekenyan +6 more
TL;DR: The proposed definition of the model domain combines the reliability of specific reactive groups hypothesized to cause the effect and the domain of explanatory variables determining the parametric requirements in order for functional groups to elicit their reactivity.
Journal ArticleDOI
Base-line model for identifying the bioaccumulation potential of chemicals
S. Dimitrov,N. Dimitrova,Thomas F. Parkerton,Mike I. H. Comber,Mark Bonnell,Ovanes G. Mekenyan +5 more
TL;DR: The base-line modeling concept presented in this work is based on the assumption of a maximum bioconcentration factor (BCF) with mitigating factors that reduce the BCF, and the most important mitigating factor was found to be metabolism.
Journal ArticleDOI
QSAR Toolbox - workflow and major functionalities.
S. Dimitrov,Robert Diderich,Tomasz Sobanski,Todor Pavlov,Georgi Chankov,Atanas Chapkanov,Yordan H. Karakolev,Stanislav Temelkov,R Vasilev,K. Gerova,Chanita Kuseva,N. D. Todorova,Aycel Mehmed,Mike Rasenberg,Ovanes G. Mekenyan +14 more
TL;DR: The OECD QSAR Toolbox is a software application intended to be used by governments, the chemical industry and other stakeholders in filling gaps in (eco)toxicity data needed for assessing the hazards of chemicals.
Journal ArticleDOI
A Systematic Approach to Simulating Metabolism in Computational Toxicology. I. The TIMES Heuristic Modelling Framework
TL;DR: This paper presents a tissue metabolism simulator (TIMES), which uses a heuristic algorithm to generate plausible metabolic maps from a comprehensive library of biotransformations and abiotic reactions and estimates for system-specific transformation probabilities.
Journal ArticleDOI
TIMES-SS--a promising tool for the assessment of skin sensitization hazard. A characterization with respect to the OECD validation principles for (Q)SARs and an external evaluation for predictivity.
Grace Patlewicz,S. Dimitrov,Lawrence K. Low,Petra S. Kern,Gergana Dimitrova,Mike I. H. Comber,Aynur O. Aptula,Richard D. Phillips,Jay Russell Niemelä,Charlotte Bernhard Madsen,Eva Bay Wedebye,David W. Roberts,Paul T. Bailey,Ovanes G. Mekenyan +13 more
TL;DR: The extent to which the five OECD principles for (Q)SAR validation are met and in particular the results from an external evaluation exercise that was recently carried out are described.