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21 条记录 (耗时 0.02 秒)

    Streaming potential system and method
    7.
    发明授权
    Streaming potential system and method 失效
    流式潜在系统和方法

    公开(公告)号：US5452233A

    公开(公告)日：1995-09-19

    申请号：US350244

    申请日：1994-12-06

    申请人： Janusz Jachowicz ,  Suzan M. Maxey ,  Carl Williams

    发明人： Janusz Jachowicz ,  Suzan M. Maxey ,  Carl Williams

    IPC分类号： G01N13/00 ,  G01N33/36 ,  G01N33/483 ,  B01J8/00

    CPC分类号： G01N33/367 ,  G01N13/00

    摘要： A system and method for measuring streaming potential, conductivity and permeability of a porous sample, such as a plug of fibrous material, in which a test electrolytic solution, such as a neutral dilute salt solution, is flowed through a flow cell containing the sample. The test solution, and a treatment solution whose effect on the sample is to be measured, are flowed through the flow cell as a series of liquid spurts. The system includes a plurality of solenoid valves which are controlled by a computer in accordance with a software program.

    摘要翻译： 用于测量诸如中性稀盐溶液等测试电解液流过包含样品的流动池的多孔样品（例如纤维材料塞）的流动电位，导电性和渗透性的系统和方法。 测试溶液和对样品的影响的处理溶液作为一系列液体喷射流过流动池。 该系统包括由计算机根据软件程序控制的多个电磁阀。

    Photostable UV absorbent containing A-cyano cinnamyl moiety
    10.
    发明授权
    Photostable UV absorbent containing A-cyano cinnamyl moiety 失效
    含有A-氰基肉桂基部分的光稳定型UV吸收剂

    公开(公告)号：US5830441A

    公开(公告)日：1998-11-03

    申请号：US9173

    申请日：1998-01-20

    申请人： Chenjie Wang ,  Ratan K. Chaudhuri ,  Janusz Jachowicz ,  Bruce C. Locke ,  Frank M. Miksza

    发明人： Chenjie Wang ,  Ratan K. Chaudhuri ,  Janusz Jachowicz ,  Bruce C. Locke ,  Frank M. Miksza

    IPC分类号： A61K8/40 ,  A61K8/42 ,  A61K8/49 ,  A61Q17/04 ,  C07C255/37 ,  C07C255/40 ,  C07C255/41 ,  C07C255/43 ,  A61K7/42 ,  C07C255/03

    CPC分类号： C07C255/43 ,  A61K8/40 ,  A61K8/42 ,  A61K8/4973 ,  A61Q17/04 ,  C07C255/37 ,  C07C255/40 ,  C07C255/41 ,  A61K2800/52

    摘要： A photostable UV absorbent with maximum absorption above 340 nm having the formula: ##STR1## wherein R is --CO(R.sub.2) or phenyl optionally substituted with lower alkyl and/or lower alkoxy; R.sub.2 is --alkyl, --O(C.sub.2+ alkyl), ##STR2## n has a value of from 2 to 8; S and T each independently are hydroxy, lower alkyl, lower alkoxy or, when R.sub.2 is alkyl or alkoxy, S can also be phenyl and when R.sub.2 is alkoxy, T is alkoxy, or S+T taken with the phenyl ring form a naphthyl radical or a fused benzodioxol-5-yl heterocyclic radical; k+l has a value of from 0 to 3 with the proviso that, when R.sub.2 is --O(alkyl), T is --O(lower alkyl) and the value of l is 2 or 3; R.sub.3 is hydrogen or lower alkylene; R.sub.4, R.sub.5, and R.sub.6 are each independently C.sub.1 to C.sub.18 alkyl or one of R.sub.4, R.sub.5 and R.sub.6 can be phenyl and A is an anion.

    摘要翻译： 具有340nm以上最大吸收的光稳定性UV吸收剂，具有下式：其中R是-CO（R 2）或任选被低级烷基和/或低级烷氧基取代的苯基; R 2为 - 烷基，-O（C 2 +烷基），n为0至8; S和T各自独立地是羟基，低级烷基，低级烷氧基，或当R 2是烷基或烷氧基时，S也可以是苯基，当R 2是烷氧基时，T是烷氧基，或与苯基取代的S + T形成萘基 或稠合苯并间二氧杂环戊烯-5-基杂环基; k + 1的值为0〜3，条件是当R2为-O（烷基）时，T为-O（低级烷基），l为2或3; R3是氢或低级亚烷基; R4，R5和R6各自独立地为C1至C18烷基，R4，R5和R6之一可为苯基，A为阴离子。