摘要:
A selective membrane having a high fouling resistance. In one embodiment, the selective membrane is a composite polyamide reverse osmosis membrane in which a hydrophilic coating is applied to the polyamide layer of the membrane, the hydrophilic coating being made by covalently bonding a hydrophilic compound to residual acid chlorides of the polyamide membrane, the hydrophilic compound including (i) at least one reactive group that is adapted to covalently bond directly to the polyamide membrane, the at least one reactive group being at least one of a primary amine and a secondary amine; and (ii) at least one non-terminal hydroxyl group.
摘要:
A selective membrane having a high fouling resistance. In one embodiment, the selective membrane is a composite polyamide reverse osmosis membrane in which a hydrophilic coating is applied to the polyamide layer of the membrane, the hydrophilic coating being made by covalently bonding a hydrophilic compound to residual acid chlorides of the polyamide membrane, the hydrophilic compound including (i) at least one reactive group that is adapted to covalently bond directly to the polyamide membrane, the at least one reactive group being at least one of a primary amine and a secondary amine; and (ii) at least one hydrophilic group, the at least one hydrophilic group being selected from the group consisting of a hydroxyl group, a carbonyl group, a trialkoxysilane group, an anionic group and a tertiary amino group; (iii) wherein the hydrophilic compound is devoid of a polyalkylene oxide group.
摘要:
A selective membrane having a high fouling resistance. In one embodiment, the selective membrane is a composite polyamide reverse osmosis membrane in which a hydrophilic coating is applied to the polyamide layer of the membrane, the hydrophilic coating being made by covalently bonding a hydrophilic compound to residual acid chlorides of the polyamide membrane, the hydrophilic compound including (i) at least one reactive group that is adapted to covalently bond directly to the polyamide membrane, the at least one reactive group being at least one of a primary amine and a secondary amine; and (ii) at least one non-terminal hydroxyl group.
摘要:
A composite polyamide reverse osmosis membrane and method of producing same. In a preferred embodiment, the membrane is made by coating a porous polysulfone support with an aqueous solution containing 2 wt % m-phenylenediamine (MPD), and 0.1 wt % di(ethylene glycol) hexyl methyl ether. Next, the excess solution is removed, and the coated support is dipped in 0.1 wt % organic solvent solution of trimesoyl chloride (TMC) in a mixture of alkanes having from 8 to 12 carbon atoms. After draining the TMC solution off, the resulting composite membrane is air dried and then rinsed in a basic aqueous solution. The resultant membrane exhibits a flux of 21.3 gfd and a salt rejection of 98.9% when used at 225 psi for an aqueous solution containing 2000 ppm of NaCl.
摘要:
A selective membrane having a high fouling resistance. In one embodiment, the selective membrane is a composite polyamide reverse osmosis membrane in which a hydrophilic coating has been applied to the polyamide layer of the membrane, the hydrophilic coating being made by (i) applying to the membrane a quantity of a polyfunctional epoxy compound, the polyfunctional epoxy compound comprising at least two epoxy groups, and (ii) then, cross-linking the polyfunctional epoxy compound in such a manner as to yield a water-insoluble polymer.
摘要:
A clutch device for a magnetic recording/reproducing apparatus for transmitting power for a tape conveying regardless of the quantity of tape wound around a reel, including a rotating central shaft installed on a main chassis, a drive pulley connected to the rotating central shaft, and having a cylindrical pulley holder portion, said drive pulley being rotated by receiving power from a driving source, an up/down gear having a cylindrical gear holder unit with the outer diameter thereof being smaller than the inner diameter of the pulley holder portion and ascendable/descendable along the rotatable central shaft, and a clutch spring placed between the inner surface of the pulley holder portion and the outer surface of the gear holder unit for selectively transmitting power with a certain torque from the driving pulley to the up/down gear in accordance with the rotational direction of the driving pulley.
摘要翻译:包括<?delete-start id =“DEL-S-00001”date =“20070626”的磁带记录/再现装置的用于传送磁带传送功率的离合器装置,而不管卷绕在卷轴上的磁带的数量如何。 >旋转<?delete-end id =“DEL-S-00001”?>安装在主机箱上的中心轴,连接到<?delete-start id =“DEL-S-00002”的驱动滑轮“date =”20070626 “?”旋转<?delete-end id =“DEL-S-00002”?>中心轴,并具有圆柱形滑轮保持器部分,所述驱动滑轮通过从驱动源接收动力而旋转,上/下齿轮具有 圆筒形齿轮保持器单元,其外径小于皮带轮保持器部分的内径,并且沿<?delete-start id =“DEL-S-00003”date =“20070626”?>可旋转< ?中心轴的“delete-end id =”DEL-S-00003“→中心轴,以及设置在皮带轮保持部的内表面与齿轮架单元的外表面之间的离合器弹簧 根据驱动滑轮的旋转方向,以一定的转矩从驱动滑轮向上/下齿轮选择性地传递动力。
摘要:
The present invention relates to a review control method of a video cassette recorder capable of controlling a review operation without noises on a screen in switching from a play mode into a review mode.
摘要:
Embodiments of the present invention relates to an apparatus including a real engagement portion, a first brake, and a second brake. The first brake is configured to be selectively coupled to the first reel engagement portion. The second brake is configured to be selectively configured to the first reel engagement portion.
摘要:
An improved actuator for an optical pickup apparatus which is capable of increasing the efficiency of a focusing coil and tracking coil by arranging the focusing coil and tracking coil in the same plane and disposing more than at least one permanent magnet in order for a plurality of poles to be alternately generated thereby, for thus improving an operation efficiency of an optical pickup apparatus for a high density optical disc which has been made to be operated at a high speed. The actuator includes a bobbin including an objective lens, back yokes disposed at both sides of the bobbin, a plurality of permanent magnets arranged in one side of each back yoke in order for the poles thereof to be differently and alternately formed, and a plurality of tracking coils and focusing coils arranged in a portion of the permanent magnets of the bobbin.
摘要:
A system constituting an application platform, comprising: an application content manager that: causes developers to register filters in a filter store; enables a user who uses an AppWriter to use the registered filters; causes the AppWriter to provide a method for configuring a content process pipeline without coding; automatically processes the content while periodically executing the configured pipeline; and causes a general-purpose repository to store different kinds of contents, and an application generator that: causes a resource store to provide resources necessary for app-writing and operation; causes the AppWriter to provide a WYSIWYG-type UI capable of producing an application that provides a desired function and UI without a prior knowledge for creation of the application; causes an application renderer to output an application source to an UI adapted to the platform; and causes the content pipeline to provide a repository that stores the created content and operate repositories.