Abstract: A non-toxic, antifouling coating composition is provided which comprises zinc oxide contacted with photosensitizer(s) which increase the capability of zinc oxide to absorb visible light.

Abstract: A non-toxic, antifouling coating composition is provided which comprises zinc oxide which has ben surface coated by photosensitizer(s) which increase the capability of zinc oxide to absorb visible light.

Abstract: An electrochemiluminescent layer for use in apparatus for determining the concentration levels of pollutants in water by measuring the increase in light emission of a luminescent surface electrochemically excited by a supporting electrode surface, where a tris bipyridyl ruthenium complex forms a homogeneous mixture with a perfluorinated, sulfonated polymer film, deposited on a transparent, electrically conductive surface, in which case the surface may also have a fine-grained structure.

Abstract: Structures to serve as selective magnetic sorbents are formed by dissolving a cellulose derivative such as cellulose triacetate in a solvent containing magnetic particles. The resulting solution is sprayed as a fine mist into a chamber containing a liquid coagulant such as n-hexane in which the cellulose derivative is insoluble but in which the coagulant is soluble or miscible. On contact with the coagulant, the mist forms free-flowing porous magnetic microspheric structures. These structures act as containers for the ion-selective or organic-selective sorption agent of choice. Some sorbtion agents can be incorporated during the manufacture of the structure.

Abstract: The invention provides a sidebearer for use between the bogie and the underframe of a railway bogie vehicle. The sidebearer comprises a housing formed of upper and lower housing elements between which act springs contained within the housing. Guide formations comprising two spaced parallel walls are provided on the lower housing element, the upper housing element including a cooperating guide wall which engages between the spaced parallel walls so as to guide relative movement between the housing elements under and against the action of the springs.