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公开(公告)号：US4540884A
公开(公告)日：1985-09-10
申请号：US454351
申请日：1982-12-29
CPC分类号： H01J49/424 , H01J49/429
摘要： In a quadrupole ion store or ion trap type mass spectometer, significantly improved mass selection is achieved by simultaneously trapping ions within the mass range of interest and then scanning the applied RF and DC voltages or the frequency .omega. to sequentially render unstable trapped ions of consecutive specific masses. These are passed out through apertures in an end cap to a high gain electron multiplier to provide a signal indicative of the ion mass. Sensitivity and mass resolution is also enhanced by operating the ion trap at a relatively high pressure in the range 1.times.10.sup.-1 to 1.times.10.sup.-5 torr. The presence of collision gas molecules, such as helium, improves sensitivity and mass resolution. In addition, the structure itself is built of stacked units, sealed by O-rings, which are easily disassembled for cleaning.
摘要翻译： 在四极离子存储或离子阱型质谱仪中，通过在感兴趣的质量范围内同时捕获离子然后扫描所施加的RF和DC电压或频率ω，来实现显着改进的质量选择，以顺序地呈现连续特定的不稳定捕获的离子 群众 它们通过端盖中的孔传递到高增益电子倍增器，以提供指示离子质量的信号。 通过在1x10-1至1×10-5乇范围内的较高压力下操作离子阱也可以提高灵敏度和质量分辨率。 碰撞气体分子（如氦气）的存在提高了灵敏度和质量分辨率。 此外，结构本身由堆叠单元构成，由O型圈密封，易于拆卸清洁。
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公开(公告)号：US4388531A
公开(公告)日：1983-06-14
申请号：US241083
申请日：1981-03-06
CPC分类号： H01J49/147
摘要： An ionizer adapted to be placed in a vacuum envelope for providing ions of a sample to be analyzed is disclosed herein and includes an electron source, ion accelerating and focusing electrodes and an interchangeable ionization chamber including a first opening for allowing electrons to enter the chamber and an exit opening to allow ions to exit said chamber. The ionization chamber is supported in cooperative relationship with the electron source and accelerating and focusing electrodes whereby electrons enter the chamber through the first opening and form sample ions in the chamber which then exit the chamber through the exit opening toward said accelerating and focusing electrodes.
摘要翻译： 本文公开了一种适于放置在用于提供要分析的样品的离子的真空外壳中的电离器，其包括电子源，离子加速和聚焦电极以及可互换电离室，其包括用于允许电子进入腔室的第一开口， 出口开口，允许离子离开所述室。 电离室与电子源和加速聚焦电极配合关系，电子通过第一开口进入腔室，并在腔室中形成样品离子，然后通过出口朝向所述加速和聚焦电极离开腔室。
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3.发明授权Methods and systems for representing breadcrumb paths, breadcrumb inline menus and hierarchical structure in a web environment 有权用于在Web环境中表示面包屑路径，面包屑内联菜单和层次结构的方法和系统公开(公告)号：US07818683B2
公开(公告)日：2010-10-19
申请号：US11005628
申请日：2004-12-06
CPC分类号： G06F17/30873
摘要： A method of a navigational path includes enabling a user to successively display a plurality of web pages; maintaining a full breadcrumb path that includes a link to each of the previously displayed pages; displaying a shortened breadcrumb path on a current page, the shortened breadcrumb path including fewer links than the full breadcrumb path, and displaying the full breadcrumb path only upon request. A method of representing a current location within a hierarchical structure of a web site or web application includes maintaining a hierarchical map of the web site or web application; generating a web page that has a predetermined level within the hierarchical map; displaying a hierarchical structure selector on the web page, and when the displayed hierarchical structure selector is selected by a user, displaying an indication of the predetermined level and a link to each hierarchically higher level of the generated web page.
摘要翻译： 导航路径的方法包括使得用户能够连续地显示多个网页; 维护一个完整的导航路径，其中包含一个链接到每个先前显示的页面; 在当前页面上显示缩短的面包屑路径，缩短的面包屑路径包括比全路径路径少的链接，并且仅在请求时才显示完整的导航路径。 一种表示网站或网络应用程序的分层结构中的当前位置的方法包括维护网站或网页应用的分层图; 生成在所述分层图中具有预定水平的网页; 在网页上显示层次结构选择器，并且当用户选择所显示的层次结构选择器时，显示预定级别的指示和链接到生成的网页的每个分级更高级别。
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