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Перевод: biodegradation

биологический распад

Тезаурус:

1. Chemical structure is an important controlling factor for biodegradation.
2. For implantable devices the toxicity of the materials, immunogenicity, thrombogenicity and resistance to biodegradation are extremely important.
3. With chlorinated hydrocarbons, the ease of biodegradation decreases as the number of chlorine atoms per molecule increases.
4. This is also known as soil banking and involves the addition of microorganisms, nutrients, bulking agents, and/or contaminants to soil, with subsequent biodegradation occurring in the surface soil.
5. A number of hazardous substances are resistant to biodegradation.
6. The rate of biodegradation may be monitored in several ways, including observing the rate at which CO2 is evolved; the rate at which chloride is produced (if the compound contains chlorine; the changes in TOC (total organic carbon) and COD (chemical oxygen demand); and changes in the concentration of the contaminant.
7. The main areas, all closely related, in which biotechnology is being applied to plants are: Improvement of crop varieties Disease and pest resistance Nitrogen fixation Deletion of undesirable traits Tissue culture and cloning Production of compounds within plants Biodegradation of plant material
8. The author sets himself the lofty task of presenting the reader with a balanced description of the entire field through fermentation, microbial metabolism, copolymer composition control, to solid state physical properties and biodegradation.
9. Because of this, they are difficult to flush out of the aquifer under standard conditions, and in situ biodegradation may be the only technically and economically feasible way to achieve remediation.
10. Bioremediation is formally defined as the controlled use of biodegradation to remove toxic chemicals from soil and groundwater.
11. There are occasions when biological treatment cannot effect satisfactory clean-up alone, because the target compounds are incredibly resistant to biodegradation; the proper conditions - eg strict anaerobic conditions - cannot be obtained; or the concentrations of the target compounds are either at toxic levels or are below the minimum concentration required for substrates.
12. In these cases, as in most others, the microbial mixture is grown using the contaminated groundwater in above-ground bioreactors, with subsequent introduction to the subsurface and further, in situ , biodegradation.