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Protein folding problem: Is it possible to predict the secondary, tertiary and quaternary structure of a polypeptide sequence based solely on the sequence and environmental information? Inverse protein-folding problem: Is it possible to design a polypeptide sequence which will adopt a given structure under certain environmental conditions?
List of unsolved problems may refer to several notable conjectures or open problems in various academic fields: Natural sciences, engineering and medicine [ edit ]
Perhaps the best that can be accomplished in an article like this is (1) simply to list those "problems" that appear in published compilations on this thematic subject, that are relevant to chemistry (which requires only limited WP editor interpretation), adding to those specifically stated, individual and citable problems that appear in other ...
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In ortho-substitution, two substituents occupy positions next to each other, which may be numbered 1 and 2.In the diagram, these positions are marked R and ortho.; In meta-substitution, the substituents occupy positions 1 and 3 (corresponding to R and meta in the diagram).
Amundson is known internationally for his pioneering work applying mathematical modeling and analysis to the solution of chemical engineering problems. His technical contributions are in the areas of mathematical modeling and analysis of chemical reactors, separation systems, polymerization units, and coal gasification units. [ 6 ]
With 15.5 million U.S. adults currently diagnosed with ADHD, there is a growing focus on warning signs of the disorder. Mental health experts share the most common signs and symptoms.
It was discovered in the 1930s by Harold Urey in 1932 (awarded the Nobel Prize in Chemistry in 1934). [citation needed] It was early on found that the deuterium content had a profound effect on chemistry and biochemistry. In the linear approximation, the effect of isotopic substitution is proportional to the mass ratio of the heavy and light ...