-
1.发明授权Indirect-photometric chromatography done in and with a variable capacity weakly basic or acidic ion exchange column 失效在可变容量弱碱性或酸性离子交换柱中进行间接光度色谱
公开(公告)号：US4629705A
公开(公告)日：1986-12-16
申请号：US615985
申请日：1984-05-31
摘要： A versatile and highly sensitive procedure of indirect photometric chromatography in which a variable capacity pH dependent weakly basic or weakly acidic ion exchange medium is used in the chromatographic column to effect ion separations. Adjusting eluent pH allows increased detection limits without extended analysis time, reduced column efficiency, or the need for a battery of conventional strongly basic/acidic ion exchange columns.
摘要翻译： 间接光度色谱法的多功能和高灵敏度的程序，其中在色谱柱中使用可变容量的pH依赖性弱碱性或弱酸性离子交换介质来实现离子分离。 调节洗脱液pH值可以提高检测限度，无需延长分析时间，降低色谱柱效率，或需要一批常规的强碱性/酸性离子交换色谱柱。
-
2.发明授权
公开(公告)号：US4751004A
公开(公告)日：1988-06-14
申请号：US858077
申请日：1986-04-25
CPC分类号： G01N30/96 , G01N30/84 , G01N2030/8435 , G01N2030/965
摘要： Packing tube membranes or membrane channels for Ion Chromatography with inert or charged ion exchange beads greatly increases overall suppressor efficiency. The length of membrane required is reduced, e.g. from 20 feet to 5 feet and bandspreading is reduced from 870 .mu.l to 200 .mu.l. This significant increase in efficiency is attributed to the mixing action of the packing on the flow stream which results in convective radial transport much more rapid than the diffusion controlled transport observed in unpacked membranes. The technique is also described for developing more efficient liquid chromatographic post-column reactors for adding reagent to the column effluent to increase detection sensitivity.
摘要翻译： 用惰性或带电离子交换珠离子色谱的包装管膜或膜通道大大提高了总体抑制效率。 需要的膜的长度减少，例如 从20英尺到5英尺，带宽从870平方米减少到200亩。 这种效率的显着提高归因于填料在流动流上的混合作用，其导致对流的径向传输比在未包装的膜中观察到的扩散控制传输更快。 还描述了该技术，用于开发更有效的液相色谱柱后反应器，用于向柱流出物中添加试剂以提高检测灵敏度。
-
3.发明授权Analytical method for determining acid/salt and base/salt species concentration in solution 失效测定溶液中酸/盐和碱/盐物质浓度的分析方法
公开(公告)号：US4290775A
公开(公告)日：1981-09-22
申请号：US115837
申请日：1980-01-28
IPC分类号： G01N27/02 , G01N30/62 , G01N30/64 , G01N30/78 , G01N30/86 , G01N30/96 , G01N33/18 , G01N31/04 , G01N27/08
CPC分类号： G01N30/96 , G01N2030/625 , G01N2030/626 , G01N2030/645 , G01N30/78 , G01N30/8641 , Y10T436/153333 , Y10T436/25125
摘要： Analytical method based on converting an acid or base species to water or absorbing the acid species whereby the species of interest is no longer responsive to a detector. Interfering salt(s) is simultaneously converted to a detectable acid or hydroxide derivative(s) in whole or in part. The species of interest is determined indirectly by subtracting the response of the salt derivative (which is proportional to the original salt) from a pre-derivatization response which is proportional to the salt plus base or salt plus acid.
摘要翻译： 基于将酸或碱物质转化为水或吸收酸物质的分析方法，由此感兴趣的物种不再响应于检测器。 干扰盐同时转化为全部或部分可检测的酸或氢氧根衍生物。 通过从与盐加碱或盐加酸成比例的预衍生反应减去盐衍生物（与原盐成正比）的响应间接测定感兴趣的物种。
-
公开(公告)号：US20110270889A1
公开(公告)日：2011-11-03
申请号：US13142949
申请日：2009-12-24
申请人： Timothy S. Stevens , Joshan Meenowa , Dale Robertson , Ivan Roper , Ian Kegel
发明人： Timothy S. Stevens , Joshan Meenowa , Dale Robertson , Ivan Roper , Ian Kegel
IPC分类号： G06F17/30
CPC分类号： G06F16/4393 , G06F16/435
摘要： A method and apparatus for generating a non-linear narrative article. After generation of a non-linear narrative article from a set of narrative rules and accompanying media elements, the narrative is optimised and the media elements are also optimised into a dictionary. A narrative tree generator determines all possible paths through the narrative to generate a narrative tree and redundant parts are removed.
摘要翻译： 一种用于生成非线性叙事文章的方法和装置。 从一组叙事规则和伴随的媒体元素生成非线性叙事文章之后，叙述被优化，媒体元素也被优化成字典。 叙事树生成器通过叙述来确定所有可能的路径，以生成叙述树，并删除冗余部分。
-
公开(公告)号：US4715217A
公开(公告)日：1987-12-29
申请号：US903535
申请日：1986-09-04
申请人： Brenton S. Coyne , Andrew J. Strandjord , Mark W. Spence , Reid S. Willis , Robert A. Bredeweg , Timothy S. Stevens
发明人： Brenton S. Coyne , Andrew J. Strandjord , Mark W. Spence , Reid S. Willis , Robert A. Bredeweg , Timothy S. Stevens
IPC分类号： B01D61/24 , G01N1/10 , G01N1/22 , G01N1/38 , G01N30/00 , G01N33/04 , G01N33/18 , G01N35/08 , B01D15/08
CPC分类号： B01D61/28 , B01D61/18 , B01D69/04 , B01D71/70 , B01F13/0818 , G01N1/10 , G01N2001/383 , G01N33/04 , G01N33/1826
摘要： The invention relates to a membrane assisted analytical chemical method for the determination of the concentration of an organic compound in an aqueous matrix. The membrane partitions the matrix from a receiving fluid. The organic compound permeates the membrane and passes into the receiving fluid which is then analyzed for the permeated compound by, for example, liquid or gas chromatography. The membrane is selected to prevent contamination of the receiving fluid from otherwise interferring components of the matrix. The concentration of the organic compound is above its solubility limit in water which would ordinarily prevent effective use of such a membrane assisted method. However, when the organic compound is emulsified with, for example, a surfactant, then a membrane assisted method is successful. The sensitivity of the method can be improved by using a thermal focusing/gas chromatography technique to concentrate the permeated organic compound from the receiving fluid and the membrane can be protected from physical damage by enclosing it in a perforate structure.
摘要翻译： 本发明涉及用于测定含水基质中有机化合物浓度的膜辅助分析化学方法。 膜从接收流体分隔基质。 有机化合物渗透膜并进入接收流体，然后通过例如液体或气相色谱分析透过化合物。 选择膜以防止接收流体污染基质的其他干扰成分。 有机化合物的浓度高于其在水中的溶解度极限，这通常将妨碍有效使用这种膜辅助方法。 然而，当有机化合物用例如表面活性剂乳化时，则膜辅助方法是成功的。 通过使用热聚焦/气相色谱技术将渗透的有机化合物从接收流体中浓缩，可以提高该方法的灵敏度，并且可以通过将膜封闭在穿孔结构中来保护膜免受物理损伤。
-
公开(公告)号：US4383047A
公开(公告)日：1983-05-10
申请号：US234521
申请日：1981-02-17
IPC分类号： G01N30/02 , B01D15/08 , B01D15/36 , B01J41/20 , B01J47/00 , G01N30/56 , G01N30/96 , B01J41/06
CPC分类号： B01D15/363 , B01J20/2803 , B01J20/3221 , B01J41/20 , B01J47/006 , G01N30/56 , G01N30/96 , B01J2220/54
摘要： An improved pellicular type (agglomerated) anion-exchange chromatographic packing composition which comprises:Component A, a substrate which consists essentially of particles of insoluble synthetic resin, having cation-exchanging sites at least on their available surfaces, the Component A particles being of a diameter of between about 5 to 75 microns and of low porosity relative to Component B microparticles, described below, andComponent B, which consists essentially of microparticles of insoluble synthetic resin, having a volume average diameter of less than about 900 and greater than about 50 Angstroms, the microparticles having anion-exchanging sites, at least on their outer surfaces, which attract available cation sites of Component A, wherein the microparticles of Component B are attached as a monolayer to the available surfaces of the Component A particles.
摘要翻译： 改进的薄膜型（聚集）阴离子交换色谱填充组合物，其包含：组分A，基本上由至少在其可用表面上具有阳离子交换位点的不溶性合成树脂颗粒组成的底物，组分A颗粒为 直径为约5至75微米且相对于下文所述的组分B微粒为低孔隙率，组分B主要由体积平均直径小于约900且大于约50的不溶性合成树脂微粒组成 埃，至少在其外表面上具有阴离子交换位点的微粒，其吸引组分A的可用阳离子位点，其中组分B的微粒作为单层附着到组分A颗粒的可用表面上。
-
公开(公告)号：US20110026610A1
公开(公告)日：2011-02-03
申请号：US12935836
申请日：2009-03-20
申请人： Timothy S. Stevens , Joshan Meenowa , Dale Robertson , Ian C. Kegel , Ivan Roper
发明人： Timothy S. Stevens , Joshan Meenowa , Dale Robertson , Ian C. Kegel , Ivan Roper
IPC分类号： H04N7/12
CPC分类号： G11B27/034 , G11B27/28 , G11B27/322 , H04N19/107 , H04N19/142 , H04N19/179 , H04N19/192
摘要： A method and apparatus for encoding media content. In the field of video compression, temporal compression generates I-frames and dependent P-frames and B-frames. The placement of I-frames is determined by the presence of scene switches in the video. In order to improve the ability of a user to seek to interesting parts of the video, a video encoder considers semantic data identifying narrative points of interest within the video. The encoding process generates encoded video data having I-frames present at scene transitions and also at narratively interesting parts of the video.
摘要翻译： 一种用于对媒体内容进行编码的方法和装置。 在视频压缩领域，时间压缩产生I帧和相关P帧和B帧。 I帧的放置由视频中场景开关的存在决定。 为了提高用户寻找视频的有趣部分的能力，视频编码器考虑识别视频内的叙述兴趣点的语义数据。 编码处理产生具有在场景转换处存在的I帧的编码视频数据，以及视频的叙述感兴趣的部分。
-
8.发明授权High performance anion-exchange chromatographic packing composition consisting of low porosity synthetic resin gel particle substrate coated with liquid water-soluble aminated resin 失效高性能阴离子交换色谱填料组合物由低孔隙率合成树脂凝胶颗粒基体组成，涂有液体水溶性胺化树脂
公开(公告)号：US4927539A
公开(公告)日：1990-05-22
申请号：US262074
申请日：1988-10-24
CPC分类号： B01D15/363 , B01J20/3221 , B01J41/20 , B01J47/006 , B01J2220/54
摘要： An anion-exchange chromatographic packing composition which comprises:a substrate which consists essentially of particles having cation-exchanging sites at least on their available surfaces, the particles being of a diameter of between about 1 to about 75 microns; anda liquid coating which consists essentially of a hydrophilic, water soluble, film forming resin having anion-exchanging sites which attract available cation-exchanging sites of the substrate, wherein the liquid coating is retained by electrostatic bonds on the available surfaces of the substrate particles. The invention further includes a chromatographic column and process using the described packing composition.
摘要翻译： 阴离子交换色谱填料组合物，其包含：基本上由至少在其可用表面上具有阳离子交换位点的颗粒组成的颗粒，所述颗粒直径在约1至约75微米之间; 以及液体涂层，其基本上由亲水的，水溶性的成膜树脂组成，其具有阴离子交换位点，其吸引基材的可用的阳离子交换位点，其中液体涂层由基材颗粒的可用表面上的静电键保持 。 本发明还包括色谱柱和使用所述包装组合物的方法。
-
9.发明授权
公开(公告)号：US4684470A
公开(公告)日：1987-08-04
申请号：US764268
申请日：1985-08-09
CPC分类号： B01D63/02 , B01D65/08 , B01D2313/08 , B01D2313/18 , B01D2321/2033
摘要： The overall mass transport efficiency of hollow fiber membrane separation cells is increased by introducing segmented flow into the bores of the fibers. The invention is preferably practiced by dispersing a gas segmentation phase into a continuous liquid phase and feeding the dispersion into the bores of the fibers to form alternating flowing segments of gas and liquid.
摘要翻译： 通过将分段流引入纤维的孔中来增加中空纤维膜分离单元的整体质量传输效率。 本发明优选通过将气体分段相分散到连续液相中并将分散体进料到纤维的孔中来实现，以形成气体和液体的交替流动段。
-
公开(公告)号：US4474664A
公开(公告)日：1984-10-02
申请号：US429357
申请日：1982-09-30
申请人： Timothy S. Stevens , James C. Davis , Hamish Small
发明人： Timothy S. Stevens , James C. Davis , Hamish Small
CPC分类号： G01N30/84 , G01N30/96 , G01N2030/8435 , G01N2030/965
摘要： A permselective ion-exchange membrane, preferably comprising hollow fiber(s) immersed within a regenerant, is used to selectively neutralize or suppress the conductivity of electrolyte in a stream of eluent also containing chromatographically separated ions. The invention particularly specifies a chromatographic separating column useful with an electrolyte eluent solution to separate ionic species by elution chromatography, wherein the effluent of the separator column is treated by the described membrane to suppress the conductivity of the electrolyte but not that of the separated ions.
摘要翻译： 优选包含浸入再生剂中的中空纤维的选择性选择性离子交换膜用于选择性中和或抑制还含有色谱分离的离子的洗脱液流中的电解质的导电性。 本发明特别规定了一种色谱分离柱，其用于电解液洗脱溶液以通过洗脱色谱分离离子物质，其中通过所述膜处理分离塔的流出物以抑制电解质的导电性，而不是分离离子的导电性。
-
-
-
-
-
-
-
-
-
搜索结果
20 条记录 (耗时 0.016 秒)
