203,122 research outputs found
The Adversary Within (excerpts)
Editorial Note: Largely because the public shrinks at the sight and thought of malformed babies, the recent case concerned with the use of thalidomide has, nonetheless, served to bring before the public the need for proof of safety before new drugs are released. For emphasis, we excerpt pertinent paragraphs of an article by Dr. Fred M. Taylor of Houston, Texas appearing in the May 1960 issue of our journal
Solvation agent for disulfide precipitates from inhibited glycol-water solutions
Small additions /0.01 percent or less/ of triethanoloamine sodium sulfite adduct to mercapto benzothiazole inhibited glycol water heat transfer solutions containing disulfide precipitate produce marked reduction in amount of precipitate. Adduct is useful as additive in glycol base antifreezes and coolants
Non-Gaussian chain statistics and finite extensibility in liquid crystal elastomers
In this work we will derive an anisotropic generalisation of the finitely
extensible chain model, due to Kuhn and Gr\"un, which is well known in rubber
elasticity. This provides a chain energy that couples elastic behaviour to a
probability distribution describing the orientations of liquid crystal monomers
within a main chain elastomer. The key point is to invoke a maximum relative
entropy assumption on the distribution of bond angles in an observed chain. The
chain energy's fourth order Taylor expansion is also given, which couples to
the second and fourth moments of the nematic distribution function only
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