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Now, Kamimura and his colleague Shigehiro Yamamoto have developed a process that depolymerizes nylon-6 and regenerates caprolactam.
For insects that rely on peritrophic filtering, biologically active tannins should be those of low molecular mass or those that depolymerize readily within the endoperitrophic space (Barbehenn and Martin 1994).
The procedure can be explained as follows: 1) oxygen is taken up rapidly by solution containing sodium sulfite with the oxygen going into solution immediately, oxidizing sulfite to sulfate; 2) in the presence of oxygen, metals or reducing agents may initiative sulfite oxidation that, in turn, activates the radical chain reaction in which radicals may polymerize; 3) the radical reactions may be a strong absorbent of molecular oxygen and produce enough energy to polymerize and depolymerize once initiated; 4) in the presence of sulfite, bacteria can rapidly take up glucose and use it in cell synthesis during carbon dioxide production; and 5) bacteria absorb sulfite rapidly and use the energy for metabolism.
Danone's roadmap for Evian water is expected to lean heavily on a new partnership with Loop Industries, a Canada-based startup that uses technology based on hydrolysis by solvents to depolymerize PET into dimethyl terephthalate (DMT) and mono ethylene glycol (MEG).
And while these materials are generally considered to be elastomers, a family of rigid urethanes known commercially as Isoplast reportedly depolymerize when heated to their melt-processing temperatures and repolymerize when they solidify in the mold ...
Our recent research in rat oocytes showed that high dosage of nocodazole could depolymerize spindle microtubules completely and inhibit migration of the condensed chromosomes, while after low dosage of nocodazole treatment, a partially impaired spindle could still translocate to the cortex (Ai et al., 2008a).
(11,12) Microbes in composted sewage sludge are able to depolymerize silicones including cyclosiloxanes to dimethylsilanediol: thus, both biotic and abiotic mechanisms for silicone depolymerization have been demonstrated.
Chitosan will gradually depolymerize to release N-acetyl-b-D-glucosamine, which initiates fibroblast proliferation and helps in ordered collagen deposition and stimulates increased level of natural hyaluronic acid synthesis at the wound site.
The preparation of LNR involves reacting NR latex with an oxidizing agent, as well as a reducing agent to depolymerize the latex to the desired [M.sub.W].
Glycolysis takes its name from the use of ethylene glycol to depolymerize post-consumer PET into oligomers consisting of esters of terephthalic acid.
The new technology developed by Carbios causes PLA to biodegrade, or depolymerize, when the plastic contacts water or humidity, without requiring compost conditions, which necessitate specific microbes, temperatures, and oxygen environments.
Methyl-2-benzimidazole-carbamate (MBC), a potent inhibitor of microtubule polymerization, was used from fresh stock (100X in DMSO) at the final concentration of 25 [micro]g/ml to depolymerize the microtubules.
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