133 research outputs found
Synthesis and properties of lipoamino acid/fatty acid mixtures. Influence of the amphiphilic structure.
The acylation of amino acids by acid chlorides with from 8 to 12 carbon atoms,
in alkaline aqueous medium following Shotten-Baumann reaction, results in sodium salts of
Nα-acylamino acids and fatty acids mixture. These lastest are present in proportion from 40 to
60%. These compositions represent mixtures of amphiphilic anionic surfactants. They
contribute together to the properties of the formulation. Measurements of the surface-active
properties of these formulations, such as critical micelle concentration (CMC), surface tension
at the CMC (TS), foaming capacity (FC) and foaming stability (FS), show that surfactant
mixtures with the longest chain have the most desirable properties. They are comparable to
commercial petroleum-based surfactants. Thus, the CMC, TS and CM values of the
formulation obtained starting from leucine and dodecanoyl chloride (310 mg/L, 30.1 mN/m
and 200%, respectively) are similar, even better than, sodium dodecylsulfate (290 mg/L,
39.1 mN/m and 230%, respectively
Andrew F. Smith, The Deliberative Impulse: Motivating Discourse in Divided Societies (Lanham: Rowman & Littlefield, 2011), 180 pages. ISBN: 978-0739146095. Hardback/Paperback: $65/29.95
G.A. Cohen and the Logic of Egalitarian Congruence
In this article, I argue that G. A. Cohen’s defense of the feminist slogan, “The personal is political”, his argument against Rawls’s restriction of principles of justice to the basic structure of society, depends for its intelligibility on the ability to distinguish—with reasonable but perhaps not perfect precision—between those situations in which what Nancy Rosenblum has called “the logic of congruence” is validly invoked and those in which it is not. More importantly, I suggest that the philosophical shape of Cohen’s critique makes it difficult for him to supply the required criterion, and that the methodological “intuitionism” he claims to be committed to is at odds with his larger argument against Rawls concerning the subject of justice
- …