Hammering out the meaning of strata

Hammering out the shape of a ribozyme.

One of the important scientific breakthroughs of the past decade was the discovery that certain RNA molecules have inherent catalytic capacities. These RNAs, or ribozymes, seemed likely to have defined three-dimensional conformations analogous to the structures required for the enzymatic activity of proteins. Since the only RNA structures known at atomic resolution were transfer RNAs and simple...

The meaning of opt-out.

In the June issue of Resuscitation, Nelson and colleagues1 deterine attitudes and opinions of persons who, a priori, chose to opt ut of an exception from informed consent (EFIC) cardiac arrest esearch trial. In order to opt out, a “no study” bracelet could be equested that expressed the wearer’s desire to not be included in he trial. A description of the mechanism to opt-out of the study was nc...

on the comparison of keyword and semantic-context methods of learning new vocabulary meaning

the rationale behind the present study is that particular learning strategies produce more effective results when applied together. the present study tried to investigate the efficiency of the semantic-context strategy alone with a technique called, keyword method. to clarify the point, the current study seeked to find answer to the following question: are the keyword and semantic-context metho...

Hammering towards QED

ly, the translation module in Sledgehammer and HOLyHammer can be seen as a two-step process: (1) Eliminate the higher-order features of the formulas to produce a rst-order problem. (2) Encode the type information in the target logic. In practice, the two steps are intertwined, because this gives rise to opportunities for optimizations. Translation of Higher-Order Features. The higher-order feat...

P-177: The Meaning of