摘要:
A magnetorheological (MR) fluid-based device including an MR piston assembly. The MR piston assembly includes a ferromagnetic MR piston core and an electric coil. The MR piston core has a central longitudinal axis and has an outer circumferential surface substantially coaxially aligned with the central longitudinal axis. The electric coil is positioned in the MR piston core and is substantially coaxially aligned with the central longitudinal axis. A portion, or at least a portion, of the electric coil is buried in the MR piston core under the outer circumferential surface.
摘要:
A method for controlling a magnetic structure including the steps of determining a flux associated with the magnetic structure and generating a control signal based, at least in part, upon the determined flux.
摘要:
The present invention relates to compositions and methods for providing an improved means of modifying asphalt with a polymer. More particularly, this invention provides a crosslinking system to improve the properties of polymer modified asphalt. Compositions of the present invention contain asphalt, a rubber or elastomeric polymer, and a crosslinkable component, particularly a bismaleimide or a bismaleimide in combination with a difunctional crosslinkable monomer.
摘要:
A method of producing biosynthetic copolymers comprising glucose and glucose analogs is provided. Glucose:glucose analog copolymers such as glucose:glucosamine, glucose:N-acetylglucosamine and glucose:glucosamine:N-acetylglucosamine are also provided.
摘要:
An oligomer composed of a carbohydrate head group and an oligomer chain is disclosed. Methods for increasing the oligomerization rates of lactones and cyclic carbonates are also disclosed.
摘要:
This invention relates to a new denture care composition and method of use. In particular, this invention relates to a film-forming denture care composition that kills odor causing bacteria, maintains prolonged fresh breath for two or more hours and is an effective guard against denture odor.
摘要:
A magnetorheological (MR) fluid-based device including an MR piston assembly. The MR piston assembly includes a ferromagnetic MR piston core and an electric coil. The MR piston core has a central longitudinal axis and has an outer circumferential surface substantially coaxially aligned with the central longitudinal axis. The electric coil is positioned in the MR piston core and is substantially coaxially aligned with the central longitudinal axis. A portion, or at least a portion, of the electric coil is buried in the MR piston core under the outer circumferential surface.
摘要:
A high-performance piston core including a first piston cylinder and a second piston cylinder, with a piston center longitudinally disposed between and magnetically coupling the first piston cylinder and the second piston cylinder. The piston center is made of high-performance magnetic material, such as Cobalt steel (CoFe), Silicon steel (SiFe), Vanadium/Cobalt steel (Permendur), alloys thereof, or the like. The high-performance magnetic materials exhibit high magnetic permeability and reduce the magnetic reluctance of flux bottlenecks. In addition, high-performance magnetic materials typically saturate at a higher flux density than the conventional magnetic materials. The first piston cylinder and the second piston cylinder can be made of conventional magnetic material, such as low-carbon steel. The first piston cylinder can include a ring disposed about an end, where the end is longitudinally attached and magnetically coupled to the piston center.
摘要:
The present invention relates to a process for making polyalkyldiallylamine-epihalohydrin resins, the resultant resins and their uses as wet strength additives for papermaking. These resins are obtained by a two step process, wherein the first step comprises the free radical polymerization or copolymerization of an alkyldiallylamine monomer in its protonated form; and the second step comprises reacting an ADAA polymer or copolymer with epihalohydrin under carefully controlled reaction conditions.