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A F Kovalev

Publications and source records attributed to A F Kovalev.

14 recordsLinked to original sources

[Component analysis of variability as a method of differentiating simple effect from hazardous effect in toxicological experiments].

The article forms the main requirements for every hazard criterion (valid, definite, statistically correct, differential, invariable, sensitive, integral). The suggested hazard criterion is based on additive components of general dispersion. Those components reflect environmental influence (environmental effect) and influence of substance (effect of substance), then the components are compared according to Fisher criterion (F). The criterion works in two-factor dispersion analysis.

Analysis of Variance↗

[Analysis of the changes in the mass of the internal organs in a toxicological experiment].

The authors describe a method for the evaluation of the changes in the mass of the animals' internal organs in a toxicological experiment. The method is based on the use of a regression analysis. The method permits evaluating the action of a factor on the mass of the organs, with the exception of the effect of a change in the body mass in an experiment and initial weigh heterogeneity in animal groups.

Animals↗