Basic steps of genetic engineering. In step 1, a gene of interest consisting of a finite sequence of nucleotides synthesized one nucleotide at a time resulting in a double-stranded DNA linear sequence ...

I have proposed several techniques for analyzing and representing thematic structures and complexity. Since these techniques are operatively defined, I began by considering a text to be a linear ...

PNAS is the world's most-cited multidisciplinary scientific serial. It publishes high-impact research reports, commentaries, perspectives, reviews, colloquium papers, and actions of the Academy. In ...