Sentence examples for by an unknown element from inspiring English sources

This reaction is catalyzed in the model by an unknown element "X" and the weight of its reaction is set to 1000.

The brown substance was the oxide of the element holmium and was named holmia by Cleve, and the green substance was the oxide of an unknown element.

"There's still an unknown element," General Manager Jim Duquette said.

There has to be an unknown element to be interesting".

I think what that comes from is people are just nervous about bringing on an unknown element to their set.

Eventually he realized that the sample was gold bonded with an unknown element.

After careful chemical and theoretical analysis, Segrè was able to prove that some of the radiation was being produced by a previously unknown element, dubbed technetium, which was the first artificially synthesized chemical element which does not occur in nature.

Segrè enlisted Perrier's help to subject the strip to careful chemical and theoretical analysis, and they were able to prove that some of the radiation was being produced by a previously unknown element.

"Neda Agha Soltan was shot dead in one of Tehran's streets on 20 June by unknown elements in a completely suspicious way," he said.

The literature on problem-solving stresses the importance of highly-structured complex problems, characterised by unknown elements with no clear path to the solution and indeed a potential for there to be many solutions or even no solution at all [ 99].

A recent study showed that a 40-amino acid peptide region upstream of α-DG O-mannose sites is involved in controlling specificity in EBNA-293 (human kidney) cells; however, another study found that specificity may be controlled by different currently unknown elements in lectican O-mannosylation in the brain.