摘要:
The present disclosure describes processes for the epimerization of a cyclohexene comprising the steps of providing to a reactor a first isomer of a 1-(2-alkyl-3-cyclohexen-1-yl)-alkanone compound according to Formula I wherein R1 ad R2 are each independently C1-C4 alkyl, and R3, R4, R5, R6, R7, and R8 are each independently selected from the group consisting of H and C1-C4 alkyl; and epimerizing the first isomer of the 1-(2-alkyl-3-cyclohexen-1-yl)-alkanone with a metal alkoxide base to form a second isomer of the 1-(2-alkyl-3-cyclohexen-1-yl)-alkanone.
摘要:
A method includes selecting a first set of digital subscriber lines (DSLs) supported by a digital subscriber line access multiplexor (DSLAM). The DSLs of the first set exhibit reduced performance based on historical performance data. The method includes sending a request to the DSLAM for a first performance parameter for each of the DSLs of the first set. The method includes receiving the first performance parameters. The method includes removing DSLs from the first set that have suitable performance based on the first performance parameters to create a second set of DSLs. The method includes selecting a line profile to apply to the second set of DSLs. The method also includes sending a second request to the DSLAM to apply the line profile to the DSLs of the second set and then to determine a second performance parameter for each of the DSLs of the second set.
摘要:
A power cable (10) is disclosed comprising a metal conductor encased in a first outer sheath (11), and further encased, partially along the length of the cable, in a second outer sheath (12, 13, 14) which influences the pattern of deformation of the cable under mechanical stress.
摘要:
Apparatus for bleeding electrical charge and methods for installing a ground stud in a composite structure. The apparatus includes a ground stud and a composite structure including a hole. In one embodiment the ground stud engages the hole in the composite structure in a transition fit. In another embodiment the ground stud is countersunk within the composite structure. Embodiments of the present methods include drilling a hole in the composite structure; inserting the ground stud into the hole such that the ground stud is in electrical contact with conductive fibers within the composite structure; securing the ground stud to the composite structure; and attaching a connective device to the ground stud such that the connective device is in electrical contact with the ground stud. In some embodiments the ground stud and the composite structure engage one another in a transition fit. In some embodiments the ground stud includes a pin, and a portion of the pin that contacts the composite structure is non-threaded. In some embodiments the ground stud is countersunk within the composite structure.
摘要:
A composite has a fibrous layer bonded to an outer side of an impermeable barrier layer. The composite is assembled on a panel composition that provides a panel substrate. The barrier layer isolates the fibrous layer from the panel composition. The fibrous layer is exposed from the barrier layer and is free of the panel composition to adhere another material to the panel. Alternatively, the composite has another fibrous layer bonded to an inner side of the barrier layer for embedding in the panel composition.
摘要:
A method of fabricating a memory cell and corresponding memory cell structure are provided. According to the method, a pull-up transistor and a pull-down transistor are formed in a semiconductor structure of the memory cell. The pull-up transistor is coupled to the pull down transistor. The pull-up transistor is coupled to a contact within said semiconductor structure such that the pull-up transistor is coupled to a voltage input through parasitic resistance of the semiconductor structure. Additional embodiments are disclosed.
摘要:
A protected faceplate structure of a field emission display device is disclosed in one embodiment. Specifically, in one embodiment, the present invention recites a faceplate of a field emission display device wherein the faceplate of the field emission display device is adapted to have phosphor containing wells disposed above one side thereof. The present embodiment is further comprised of a barrier layer which is disposed over the one side of said faceplate which is adapted to have phosphor containing wells disposed thereabove. The barrier layer of the present embodiment is adapted to prevent degradation of the faceplate. Specifically, the barrier layer of the present embodiment is adapted to prevent degradation of the faceplate due to electron bombardment by electrons directed towards the phosphor containing wells.
摘要:
This invention provides facing materials for cementitious boards such as those including Portland cement or gypsum cores. The preferred facing material includes, in a first embodiment, a facing layer having an areal weight of about 300 grams/M2, and an air permeability rating of no greater than about 300 CFM/ft2 (FG 436-910 test method). The facing layer reduces the penetration of a slurry of cementitious material during the manufacture of a cementitious board, while permitting the water vapor from the slurry to pass therethrough. The facing materials of this invention can be designed to substantially eliminate the fouling of rolls used in continuous processing of such boards without the use, or with greatly reduced use, of costly viscosity control agents in the slurry. In addition, further embodiments of this invention can include binders, coatings or saturants which are designed to decrease pore size, increase or decrease the contact angle of liquids, or promote greater adhesion to cementitious cores, greater adhesion to other layers in the facing material, or greater adhesion or affinity to various types of adhesive compositions used to join cementitious boards to insulation and exterior finishing systems (EIS or EIFS).
摘要:
Lubricants for lubricating surfaces of microelectromechanical devices are disclosed. Specifically, the lubricants can be applied to the contacting surfaces of the microelectromechanical devices so as to remove stiction of the contacting surfaces.
摘要:
Phenylalanine derivatives of formula (1) are described: wherein R is a carboxylic acid or a derivative thereof; L1 is a linker atom or group; Ar is an optionally substituted aromatic group; and the salts, solvates, hydrates and N-oxides thereof. The compounds are able to inhibit the binding of alpha4 integrins to their ligands and are of use in the prophylaxis and treatment of immune or inflammatory disorders.
摘要翻译:描述了式(1)的苯丙氨酸衍生物:其中R是羧酸或其衍生物; L 1是连接原子或基团; Ar是任选取代的芳族基团; 及其盐,溶剂合物,水合物和N-氧化物。 该化合物能够抑制α4整联蛋白与其配体的结合,并且可用于预防和治疗免疫或炎症性疾病。