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    • 1. 发明授权
    • Support planar germanium waveguides for infrared evanescent-wave sensing
    • 支持平面锗波导,用于红外消逝波感测
    • US5980831A
    • 1999-11-09
    • US874711
    • 1997-06-13
    • Mark S. BraimanSusan E. PlunkettJames J. Stone
    • Mark S. BraimanSusan E. PlunkettJames J. Stone
    • G01N21/55G01N21/00
    • G01N21/552
    • We have fabricated miniature planar IR waveguides of thickness 30-50 .mu.m, consisting of 12-mm long, 2-mm wide strips of Ge supported on ZnS substrates. Evidence for efficient propagation of broadband IR light through these waveguides is provided by the presence of characteristic high and low frequency optical cut-offs of Ge; by the observation of an oscillatory interference pattern in the transmittance spectrum, which exhibits a dependence on waveguide thickness and propagation angle closely matching waveguide theory; and by the detection of strong evanescent-wave absorption from small (2 mm.sup.2) droplets of liquid, e.g. water, on the waveguide surface. As also predicted by theory, the surface sensitivity (detected light absorbance per unit area of sample-waveguide contact) was shown to increase as a function of incidence or bevel angle.
    • 我们制造了厚度为30-50微米的微型平面IR波导,由支撑在ZnS基底上的12英寸长,2毫米宽的Ge带组成。 通过存在Ge的特征性高频和低频光学截止来提供宽带IR光通过这些波导的有效传播的证据; 通过观察透射光谱中的振荡干涉图案,其显示出与波导理论紧密匹配的波导厚度和传播角度的依赖性; 并且通过检测来自小(2mm 2)液体液滴的强的ev逝波吸收。 水,在波导表面。 也可以通过理论预测,表面灵敏度(样品 - 波导接触的每单位面积的检测光吸收率)显示随着入射角或斜角角度的增加而增加。
    • 5. 发明授权
    • Treatment of psoriasis with 11-cis-retinoic acid
    • 用11-顺 - 视黄酸治疗牛皮癣
    • US5719195A
    • 1998-02-17
    • US435804
    • 1995-05-05
    • Mark S. Braiman
    • Mark S. Braiman
    • A61K8/67A61K31/07A61K31/20A61K31/203A61Q19/00
    • C07C403/14A61K31/203A61K8/671A61Q19/00C07C403/20A61K2800/75A61K2800/81C07B2200/09C07C2101/16
    • A particular uncommon isomer of retinoic acid (namely 11-cis-retinoic acid, or neotretinoin) is useful in treating conditions involving abnormal cellular differentiation and hyperproliferation, such as psoriasis. A new method of synthesizing this isomer, in quantities that has allowed it to be compared therapeutically with the more commonly available all-trans and 13-cis isomers, is presented. As measured on the inventor's own psoriasis-affected skin, topical treatment with 11-cis-retinoic acid is much more efficacious in reducing symptoms and has substantially reduced side effects, as compared to topical treatment with the other isomers. A single application of a 0.001% neotretinoin cream to psoriasis lesions leads within 48 hours to substantial amelioration of associated dermatological symptoms, including itching, scaling, bleeding, and abnormal appearance. Continued application leads to complete remission, and replacement of lesions by skin that is indistinguishable from surrounding healthy tissue, without any noticeable irritation, erythema, or other problematic side effects. A less efficacious but more easily-implemented version of the same invention employs ultraviolet or blue-light irradiation of a commercially-available gel containing tretinoin as a means of effecting partial conversion of the tretinoin to neotretinoin, prior to application of the gel to psoriasis-affected areas of skin.
    • 视黄酸特别不常见的异构体(即11-顺 - 视黄酸或新维甲酸)可用于治疗涉及异常细胞分化和过度增殖的病症,如牛皮癣。 提出了一种合成该异构体的新方法,其数量使其能够与更常用的全反式和13顺式异构体进行治疗比较。 根据发明人自己的牛皮癣影响的皮肤,与使用其它异构体的局部治疗相比,用11-顺式视黄酸进行局部治疗比减少症状更有效,并且具有显着降低的副作用。 对银屑病病变的单次应用是0.001%的新维A酸霜在48小时内导致相关皮肤病症状的显着改善,包括瘙痒,结垢,出血和异常外观。 继续应用导致完全缓解,并且与周围健康组织不可区分的皮肤替换病变,没有明显的刺激,红斑或其它有问题的副作用。 在将凝胶应用于银屑病之前,相同发明的不太有效但更容易实现的版本使用含有维A酸的市售凝胶的紫外线或蓝光照射作为实现维A酸至部分转化为新维甲酸的方法, 受影响的皮肤区域。