Abstract: Polymeric compositions are derived from copolymers of .alpha.,.beta.,.beta.-trifluorostyrene with a variety of substituted .alpha.,.beta.,.beta.-trifluorostyrenes. These compositions are suitable for use as membranes, particularly as ion-exchange membranes, and most particularly as solid polymer electrolytes in electrochemical applications, such as, for example, electrochemical fuel cells.

Abstract: Sulfonyl fluoride substituted .alpha.,.beta.,.beta.-trifluorostyrene monomers are disclosed. The monomers are incorporated into polymeric compositions which are conveniently hydrolyzed to produce polymeric compositions which include ion-exchange moieties. The resulting compositions which include ion-exchange moieties are particularly suitable for use as solid polymer electrolytes in electrochemical applications, such as, for example, electrochemical fuel cells.

Abstract: Sulfonyl fluoride substituted .alpha.,.beta.,.beta.-trifluorostyrene monomers are disclosed. The monomers are incorporated into polymeric compositions which are conveniently hydrolyzed to produce polymeric compositions which include ion-exchange moieties. The resulting compositions which include ion-exchange moieties are particularly suitable for use as solid polymer electrolytes in electrochemical applications, such as, for example, electrochemical fuel cells.

Abstract: Polymeric compositions are derived from copolymers of .alpha.,.beta., .beta.-trifluorostyrene with a variety of substituted .alpha.,.beta.,.beta.-trifluorostyrenes. These compositions are suitable for use as membranes, particularly as ion-exchange membranes, and most particularly as solid polymer electrolytes in electrochemical applications, such as, for example, electrochemical fuel cells.

Abstract: Polymeric compositions are derived from copolymers of .alpha.,.beta.,.beta.-trifluorostyrene with a variety of substituted .alpha.,.beta.,.beta.-trifluorostyrenes. These compositions are suitable for use as membranes, particularly as ion-exchange membranes, and most particularly as solid polymer electrolytes in electrochemical applications, such as, for example, electrochemical fuel cells.

Abstract: An inlet apparatus for gas-aerosol sampling comprises an elutriator column and an impactor member. The elutriator column comprises an inlet and an impact accelerator jet outlet, and the inner surface of the column is provided with a coating of polytetrafluoroethylene-containing polymer. The impactor member includes a housing which surrounds the impact accelerator jet outlet and an impactor surface arranged within the housing and opposite the impact accelerator jet outlet. The inner surface of the housing is also provided with a polytetrafluoroethylene-containing polymer coating.

Abstract: An inlet apparatus for gas-aerosol sampling comprises an elutriator column and an impactor member. The elutriator column comprises an inlet and an impact accelerator jet outlet, and the inner surface of the column is provided with a coating of polytetrafluoroethylene-containing polymer. The impactor member includes a housing which surrounds the impact accelerator jet outlet and an impactor surface arranged within the housing and opposite the impact accelerator jet outlet. The inner surface of the housing is also provided with a polytetrafluoroethylene-containing polymer coating.

Abstract: An apparatus adapted to be used in conjunction with a conventional cotton harvester for gleaning cotton missed by the harvester consists of a pair of independently suspended, parallel, opposed intake manifolds. Each manifold comprises a floor member having frontward and rearward end wall members fixed at opposite ends of the floor member. An outside wall is fixed to an outside edge of the floor member and extends from the frontward end wall to the rearward end wall. An inside wall having a height significantly less than the outside wall is fixed to the floor member parallel to, but some distance from, the running edge of the floor member. A downfall sheet is fixed to a top edge of the outside wall and to the inside wall so as to be spaced from and inclined with respect to the floor member. The inside wall contains a plurality of apertures leading to forwardly- and upwardly-inclined ducts leading to the flue comprising the inside of the manifold.

Abstract: An apparatus adapted to be used in conjunction with a conventional cotton harvester for gleaning cotton missed by the harvester consists of a pair of independently suspended, parallel, opposed intake manifolds. Each manifold comprises a floor member having frontward and rearward end wall members fixed at opposite ends of the floor member. An outside wall is fixed to an outside edge of the floor member and extends from the frontward end wall to the rearward end wall. An inside wall having a height significantly less than the outside wall is fixed to the floor member parallel to, but some distance from, the running edge of the floor member. A downfall sheet is fixed to a top edge of the outside wall and to the inside wall so as to be spaced from and inclined with respect to the floor member. The inside wall contains a plurality of apertures leading to forwardly- and upwardly-inclined ducts leading to the flue comprising the inside of the manifold. Appropriate conduits, blowers, etc.