Abstract: The present invention relates to the problems of remineralization, without demineralization of dental enamel by applying to the teeth a composition which is present in two phases which do not react with one another until introduced into the oral cavity. One phase contains at least one water-soluble calcium compound and the other contains at least one water-soluble inorganic phosphate and at least one water-soluble fluorine compound. In this way the ions which effect remineralization can be absorbed by the dental enamel and their subsequent reaction causes rehardening of demineralized areas in the dental enamel.

Abstract: The present invention relates to remineralization, without demineralization, by applying to the teeth a composition which is present in either one or in two phases and which does not react to any large extent until introduced into the oral cavity and upon such introduction does not rapidly precipitate. One phase systems contain at least one water-soluble calcium compound, at least one other water-soluble, non-toxic compound containing a divalent metal different from calcium, and at least one water-soluble inorganic phosphate compound. If desired at least one water-soluble fluorine compound may be added to the system. In two phase systems one phase contains the calcium and the divalent metal compounds and the other the phosphate and optionally, the fluoride compound. In this way the ions which effect remineralization can be absorbed by the dental enamel and their subsequent, but controlled, reaction causes rehardening of demineralized areas in the dental enamel.

Abstract: A polyarylene sulfide resin composition having excellent metal corrosion resistance and excellent mechanical properties is composed of 100 parts by weight of a polyarylene sulfide resin; from 0.1 to 10 parts by weight of a specific metal compound the surface of which has been pretreated with a first alkoxysilane compound; from 0 to 10 parts by weight of a second alkoxysilane compound; and from 5 to 500 parts by weight of an organic filler.

Abstract: This invention relates to non-aqueous compositions and methods utilizing same which are useful to remineralize subsurface dental enamel. More specifically, this invention relates to stable, single-part compositions containing calcium and phosphate salts which may be in a hydrophilic, non-aqueous vehicle and which when applied to lesions in dental enamel result in remineralization of subsurface dental enamel and/or mineralization of tubules in dentin thereby counteracting caries and/or hypersensitivity.

Abstract: A railway rail fastening clip (1) suitable for holding down a railway rail (2) is formed from a rod of resilient material bent so as to be approximately M-shaped in plan, the clip (1) being such that, when it is bearing on the flange of a rail (2), the longitudinal axis of a part (14) thereof, which interconnects inner legs (13, 15) of the M, lies in a reference plane which is substantially parallel, but not identical, to a plane containing the longitudinal axes of outer legs (11, 17) of the M. Such clips (1) are used with an anchoring device (5), which, as the clip (1) is installed therein, deflects the outer legs (11, 17) downwardly with respect to the inner legs (13, 15), so as to place the clip under stress.

Abstract: A process of recycling a multicomponent mixed polymer waste material involves the steps of agglomerating the multicomponent mixed polymer waste material and spinning the agglomerate to form yarn, wherein the multicomponent mixed polymer waste material contains a blend of at least two incompatible polymers.

Abstract: A plate-type distillation/condensation apparatus and a method of using same to separate at least two volatility-differing liquid or vapor components from a mixed fluid stream thereof are disclosed, wherein the apparatus contains at least one flow plate having formed on a common facial surface thereof at least one distillation/condensation chamber containing an inlet port for the mixed fluid stream; a primary flow channel in fluid communication with the inlet port; one heat exchange conduits, wherein (i) a first heat exchange conduit for a first cooling fluid is disposed in a first heat exchange contact with the primary flow channel sufficient to condense at least a portion of a first vapor component into a first condensate phase, or (ii) a first heat exchange conduit for a heating fluid is disposed in a second heat exchange contact with the primary flow channel sufficient to boil at least a portion of a first liquid component into a first vapor phase, and a second heat exchange conduit for a second cooling fl

Abstract: Disclosed are microfiber-containing core-spun yarns and fabrics formed therefrom, wherein the core-spun yarn contains a core containing one or more non-micro fibers and a sheath covering and twisted about the core, wherein the sheath contains either staple composite islands-in-the-sea microfiber-generating fibers or staple microfibers formed by treating the composite fibers with a solvent to remove the sea component either before or after formation of the fabric.

Abstract: A plate-type diaphragm pump is composed of an inlet valve member containing two inlet plate structures, an outlet valve member containing two outlet plate structures, and a diaphragm member preferably containing one or two plates, the plate structures being plates or plate sections. A first inlet plate structure has a first inlet channel section and a first valve-seat, a second inlet plate structure has a second inlet channel section and an inlet flexible element, a first outlet plate structure has a first outlet channel section and a second valve-seat, and a second outlet plate structure has a second outlet channel section and an outlet flexible element. The inlet and outlet flexible elements, respectively disposed between the inlet channel sections and the outlet channel sections, have free ends disposed for movement onto and off of the respective first and second valve-seats to respectively prevent or permit fluid flow between the respective inlet and outlet channel sections.

Abstract: A filter for filtering particulates from a particulate-containing fluid stream passing through the filter, contains one or more flow plates, each of the flow plates having (a) one or more primary fluid flow passages; and (b) one or more particulates-collecting, eddy current-forming accumulation chambers communicating with the primary fluid flow passages; wherein the accumulation chambers are not situated in the primary fluid flow passages and, when the accumulation chambers contain particulates, the particulate-containing accumulation chambers do not impede fluid flow through the primary fluid flow passages.