Abstract: Iodinated amphiphilic compound of formula (I): AG1-X—R??(I) wherein AG1 represents an unsaturated (C8-C52) aliphatic hydrocarbon chain found in fatty acids having specific location of double bonds, the chain including at least one iodine atom directly linked to a carbon atom of a non-conjugated double bond by a covalent link, the second carbon atom of the double bond bearing a halogen atom different from a iodine atom, X represents a polyethylene glycol including 1 to 50 ethylene glycol groups, R represents a hydrogen atom or a group AG2 being identical to or different from AG1, AG1, X, R and AG2 being selected so that the amphiphilic compound has a hydrophilic/lipohilic balance included between 4 and 30.

Abstract: A connector comprises at least one elastically deformable lamellar flexible electrical contact member and at least one rounded rigid electrical contact member which come into electrical and mechanical contact with each other on relative displacement of the rigid member towards the flexible member in a direction intersecting the general orientation of the flexible member which is thereby tensioned elastically. The free end of the flexible member has a curved area whose concave side faces towards the rigid member and whose radius of curvature is greater than the radius of the cross-section of the rigid member. This curved area is extended by an oppositely curved engagement area.