Sentence examples for substitute compounds from inspiring English sources
In the search for substitute compounds for R-134a, nonflammable carbon dioxide was championed as a viable alternative, and Mercedes announced this month that it would continue to develop CO2-based systems.
Movement toward a ban on the harmful chemicals began with the findings in the 1970's but accelerated sharply in the 1980's after scientists found substitute compounds that were less harmful -- and particularly after a gaping seasonal hole in the ozone layer was discovered over Antarctica.
These substitute compounds may present their own health and environmental hazards, and new evidence shows that certain substitutes can undergo chemical transformations in the environment yielding PFOS and PFOA (Betts 2007).
A swelling and thus a volume increase could be critical, especially for using the tri-phase bone substitute compound as 3D scaffold with defined dimensions.
In May 2001, near Nola, Italian archaeologists using the technique of filling every cavity with plaster or substitute compound recovered some remarkably well-preserved forms of perishable objects, such as fence rails, a bucket and especially in the vicinity thousands of human footprints pointing into the Apennines to the north.
The obtained conductivity was two orders of magnitude higher than that of the non-substituted sample and nine times higher than those of the Zr4+ and SiO44−-substituted compounds.
Like chloro substituted compounds almost similar pattern of potency was exhibited by the bromo substituted compounds (8i, 8j and 8k).
Further, dimethyl substituted compound (8o) found to be more potent as compared to the single methoxy substituted compounds (8a, 8b and 8c).
The mechanism of electrode degradation differs for the binary and the substituted compounds.
The user works directly with the 3D structure of each compound, instead of substituting compounds with dots or nodes.
On the other hand, single or poly substituted compounds on the benzene ring both showed good activity against FO.
