He began experimenting with fingers and ears available at the city's forensic lab, placing them in glass jars — "I kept eating Gerber," he said — slightly tweaking the chemical proportions each time while enduring his colleagues' teasing.
Research on toxicology and risk assessment of multichemical exposures is then complicated because toxicologic interactions vary with exposure sequence, duration and route, as well as with total dose, relative chemical proportions, and endpoint.
She attributes the productivity of the use of formulae to the fact that they 'conveyed a building-block image of chemical proportions without simultaneously requiring an investment in atomic theories, together with the simplicity of their maneuverability on paper' (2003, 35).
Thus, using chemical proportions seen following water treatment by chlorination, we sought to assess the combined reproductive toxicity of the nine regulated chlorination DBPs in a multigenerational study in rats.
The effects of quantitative metabolites are dosage dependent and the higher these chemicals' proportion in the herbivore's diet, the less nutrition the herbivore can gain from ingesting plant tissues.
It is evident from the comparison of FT-IR data of EPS matrices of the respective strains of bacteria that very little/no differences do exist between them with regard to their chemical composition, proportion of each chemical constituent but significantly in the amount of bacteria embedded within the respective biofilms.
Berzelius's experiments led to a more complete depiction of the principles of chemical combining proportions, an area of investigation that the German chemist Jeremias Benjamin Richter named "stoichiometry" in 1792.
The journals in the top tertile of impact factors contributed 52,306 (or 58%) to the CAS references of the top-20 chemicals, a proportion only slightly higher than their total share of CAS number links (56%) for these journals.
In the case of a nuclear, biological or chemical attack, the proportion of those that feels protected by their government falls to around 50% in all three countries.
Therefore, the experimental supplementation only affected to contents of vitamin E in secretions, which were otherwise similar between treatments in their chemical composition and proportion of chemicals.
