摘要:
A method for integrating a batch cement process with a cuttings reinjection process, the method comprising: equipping a batch cement skid with a particle classifier and a grinding pump, such that the batch cement skid sequentially implements the cuttings reinjection process and the batch cement process is disclosed. An apparatus for performing a batch cement process and a cuttings reinjection process, the apparatus comprising: a first tank and a second tank, a particle classifier having a coarse effluent stream feeding into the first tank and a fine effluent stream feeding into the second tank, and a grinding pump in fluid communication with the first tank and the particle classifier is also disclosed.
摘要:
The invention relates to a method for coating spark plug threads with a polytetrafluoroethylene mixture comprising the steps of (a) bringing the spark plug to room temperature of 21° C. to 26° C. (70° F. to 79° F.); (b) mixing the polytetrafluoroethylene mixture thoroughly and filtering the material through a 100-mesh stainless steel screen (0.146 mm openings); (c) applying a minimum dry film thickness of 20 microns to 30 microns (0.8 mil to 1.2 mil) to the spark plug thread; and (d) baking the spark plug for 15 minutes at a metal temperature of 232° C. to 260° C. (450° F. to 500° F.).
摘要:
The invention relates to a method for coating spark plug threads with a polytetrafluoroethylene mixture comprising the steps of (a) bringing the spark plug to room temperature of 21° C. to 26° C. (70° F. to 79° F.); (b) mixing the polytetrafluoroethylene mixture thoroughly and filtering the material through a 100-mesh stainless steel screen (0.146 mm openings); (c) applying a minimum dry film thickness of 20 microns to 30 microns (0.8 mil to 1.2 mil) to the spark plug thread; and (d) baking the spark plug for 15 minutes at a metal temperature of 232° C. to 260° C. (450° F. to 500° F.).
摘要:
A process for optically reducing charge build-up in an integrated circuit includes exposing the integrated circuit or portions thereof to a broadband radiation source. The process effectively reduces charge buildup that occurs in the manufacture of integrated circuits.
摘要:
An apparatus, system, and method are provided for sharing a cached security profile in a database environment. The apparatus, system, and method include a cache module for caching a security profile accessible to primary tasks and secondary tasks. An identification module is provided that distinguishes between primary tasks authorized to refresh the security profile and secondary tasks. A refresh module cooperates with the cache module and identification module to selectively refresh the security profile in response to a refresh request and expiration of the security profile such that an old version of the security profile is retained for use by secondary tasks until an execution window closes.
摘要:
Provided is a method of preparing a photochromic polymeric article including: (a) providing a fluid polymerizable composition of: at least one monomer; a first initiator for inducing polymerization of the monomer at a first temperature; and a second initiator for inducing further polymerization at a second temperature higher than the first temperature; (b) heating the polymerizable composition to at least the first temperature whereby the first initiator induces polymerization of the monomer at the first temperature to produce a polymerizate; (c) heating the polymerizate of (b) to at least the second temperature to further polymerize the polymerizate; and (d) contacting the polymerizate with an organic photochromic substance to incorporate the organic photochromic substance into the polymerizate. Photochromic articles prepared by the method are also provided.
摘要:
Described are ungelled coating compositions of photochromic material, precursor materials for a first polymer polymerizable by free-radical initiated polymerization and precursor materials for a second or additional polymer(s) different from the first polymer. When the second polymer is selected from polyurethane, poly(urea-urethane) and mixtures thereof, the precursor materials include at least one blocked polyisocyanate. Also described are methods of making photochromic articles using the ungelled coating compositions and the photochromic articles produced using these methods.
摘要:
Disclosed herein are representative embodiments of methods, apparatus, and systems used to deliver a prosthetic heart valve to a deficient valve. In one embodiment, for instance, a support structure and an expandable prosthetic valve are advanced through the aortic arch of a patient using a delivery system. The support structure is delivered to a position on or adjacent to the surface of the outflow side of the aortic valve (the support structure defining a support-structure interior). The expandable prosthetic valve is delivered into the aortic valve and into the support-structure interior. The expandable prosthetic heart valve is expanded while the expandable prosthetic heart valve is in the support-structure interior and while the support structure is at the position on or adjacent to the surface of the outflow side of the aortic valve, thereby causing one or more native leaflets of the aortic valve to be frictionally secured between the support structure and the expanded prosthetic heart valve.
摘要:
Described are optical elements made of a substrate and a curable film-forming composition applied to at least a portion of the substrate to form a coating thereon. The curable film-forming composition comprises: i) a resinous material comprising a monomer, oligomer, and/or polymer containing reactive functional groups; ii) a curing agent having two or more reactive functional groups that are reactive with functional groups in the resinous material of i); and iii) a material different from i) and ii), comprising a blocked isocyanate group blocked with a blocking agent capable of deblocking at a low temperature. The material of iii) is present in the curable film-forming composition at least in an amount sufficient to improve adhesion between the curable film-forming composition and the substrate and/or a superposed coating compared to a substantially identical optical element that does not comprise the material of iii) in the curable film-forming composition.
摘要:
Various non-limiting embodiments disclosed herein related to photochromic materials comprising the reaction product of (a) at least one ring-opening cyclic monomer, and (b) a photochromic initiator. Other non-limiting embodiments related to photochromic materials represented by: wherein S′ comprises the at least one ring-opened cyclic monomer as set forth herein. Other non-limiting embodiments related to photochromic compositions, optical elements, and methods of inhibiting migration of a photochromic material in a polymeric material using the photochromic materials disclosed herein. Methods of making such photochromic materials, compositions, and optical elements are also disclosed.