摘要:
The present invention relates to a process for the production of halogenated butyl rubber and an apparatus for the production of rubber cement for use in the production of halogenated butyl rubber. The process and apparatus permit direct mixing of aqueous rubber slurry with a non-halogenated organic solvent to make a rubber cement solution. The water layer is then separated from the partially dissolved rubber cement and the cement phase is sent for halogenation. The apparatus is an enclosed vessel comprised of at least one dissolving zone and at least one separator zone. The process and apparatus advantageously employ recycle of rubber cement in order to disrupt an interface layer that forms between the water and rubber cement, to thereby improve continuously operation of the process.
摘要:
The present invention relates to a process for the production of halogenated butyl rubber and an apparatus for the production of rubber cement for use in the production of halogenated butyl rubber. The process and apparatus permit direct mixing of aqueous rubber slurry with a non-halogenated organic solvent to make a rubber cement solution. The water layer is then separated from the partially dissolved rubber cement and the cement phase is sent for halogenation. The apparatus is an enclosed vessel comprised of at least one dissolving zone and at least one separator zone. The process and apparatus advantageously employ recycle of rubber cement in order to disrupt an interface layer that forms between the water and rubber cement, to thereby improve continuously operation of the process.
摘要:
Disclosed is a diacylglycerol acyltransferase 1, a recombinant Saccharomyces cerevisiae containing the diacylglycerol acyltransferase 1, and application thereof in production of triacylglycerol. The diacylglycerol acyltransferase 1 of the invention has a function of catalyzing synthesis of triacylglycerol. After the recombinant Saccharomyces cerevisiae containing the diacylglycerol acyltransferase 1 of the invention is subjected to induction culture for 48 h, the content of total fatty acid and triacylglycerol in the recombinant Saccharomyces cerevisiae containing the diacylglycerol acyltransferase 1 can be respectively increased by 1.94 folds and 12.09 folds as compared with those of Saccharomyces cerevisiae without the recombinant diacylglycerol acyltransferase 1. The instant invention provides a method for improving the ability of microorganisms to produce polyunsaturated fatty acids (PUFAs) by means of genetic engineering.
摘要:
An electrically conductive ceramic composite conductor configured for downhole operations includes a first portion formed from an electrically non-conductive ceramic material having a first coefficient of thermal expansion (CTE). The first portion includes an outer surface. A second portion is disposed radially inwardly of the outer surface. The second portion is formed from an electrically conductive ceramic material having a second CTE that is substantially similar to the first CTE.
摘要:
A drain floor, including a drain base, a drain body including a cavity, a drain cup, a supporting frame; and a reset member. The drain cup includes a cup body, a stem, and a base. The cup body includes a through hole, and two ends of the stem are connected to the cup body and the base, respectively. The cup body is disposed in the cavity and the base is disposed out of the cavity. The space between the drain body and the drain cup forms an annular channel, and the annular channel communicates with the through hole. The annular channel includes a water inlet and a water outlet. The reset member is connected to the drain cup and is movable with respect to the drain cup to open and close the water outlet. The supporting frame connects the drain body and the reset member.
摘要:
Provided are an electronic device for a network control terminal and a network node, and a method for the electronic device. The electronic device for a network control terminal comprises processing circuitry configured to set a first condition concerning a beam-forming capacity of a network node for determining the network node capable of serving as a relay node, and to generate control signaling of indication information comprising the first condition for indicating the network node served by the network control terminal.
摘要:
Devices and methods related to high-contrast liquid crystal displays (LCDs) are provided. For example, such an electronic device may include an LCD with two liquid crystal alignment layers not symmetric to one another and upper and lower polarizing layers respectively above and below the alignment layers. Light transmittance through the plurality of pixels may increase monotonically with gray scale voltage. The display may operate using a gray scale level 0 voltage higher than a minimum gray scale level 0 voltage capability of the display. Additionally or alternatively, liquid crystal molecular alignment axes of the two alignment layers may be offset from one another by an angle other than a multiple of 180 degrees. Additionally or alternatively, a first polarizing axis of the upper polarizing layer or a second polarizing axis of the lower polarizing layer, or both, may be neither parallel nor perpendicular to one of the liquid crystal molecular alignment axes.
摘要:
The disclosure concerns compositions and methods for determining the zygosity of corn plants containing one or more floury2 (fl2) mutations. In embodiments, the disclosure concerns a gene specific PCR-based molecular (KASPar®) assay for identifying the floury2 trait in plants. In certain embodiments, compositions and methods are disclosed for determining the zygosity of corn plants with respect to the fl2 allele. In particular embodiments, the assay may be used for fl2 germplasm identification, accelerating introgression and molecular breeding programs in corn and other plants.
摘要:
The present invention relates to a composite nano microporous diaphragm for use in lithium ion cells using polyolefin modified with post-crosslinked rubber and manufacturing method thereof. The microporous diaphragm at least comprises a nano microporous diaphragm A layer with a chemical gel content of more than 20%, the microscopic structure thereof is designed to be the rubber material that has been evenly dispersed and has subjected to a post-crosslinking treatment in polyolefin nano microfiber matrix, forming a nano microporous diaphragm of rubber-plastic composite. The nano microporous diaphragm with high strength, thermal cutoff, high temperature resistance, as well as good liquid absorption and swelling and compression elasticity can be applied to lithium ion power cells with high safety and long cycling life.