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    • 3. 发明授权
    • Elements for analysis of calcium
    • 钙分析要素
    • US4594225A
    • 1986-06-10
    • US775709
    • 1985-09-13
    • Kazumi AraiMikio KoyamaKenichiro Okaniwa
    • Kazumi AraiMikio KoyamaKenichiro Okaniwa
    • G01N33/84G01N21/78G01N31/00G01N31/22G01N33/52
    • G01N31/22
    • An improved multilayer analytical element for the determination of calcium comprising a liquid impermeable, optically transparent support; at least one reagent layer positioned with a first side on said support and containing at least one reagent capable of reacting with a calcium component in a fluid sample; and at least one porous developing layer on the second side of said reagent layer, said porous developing layer being permeable to calcium from said fluid sample thereby transporting said calcium to said reagent layer. The improvement comprises at least one of said reagent layer and developing layer containing a basic substance of the formula M.sub.v H.sub.w PO.sub.4 .multidot.ZH.sub.2 O wherein M is lithium, sodium or potassium; v is an integer of 2 or 3 and w is an integer of 0 or 1 provided that v plus w equals 3; and Z is 1/2 when M is lithium, 0, 2 or 12 when M is sodium and 0 or 8 when M is potassium; and said reagent layer contains (i) 3,3'-bis[N,N-di(carboxymethyl)aminomethyl]-o-cresolphthalein and (ii) 8-hydroxyquinoline or a derivative thereof.
    • 一种用于测定钙的改进的多层分析元件,其包含不透液体,光学透明的载体; 至少一个试剂层,其具有位于所述载体上的第一侧,并含有至少一种能够与流体样品中的钙组分反应的试剂; 以及在所述试剂层的第二侧上的至少一个多孔显影层,所述多孔显影层可从所述流体样品渗透钙,从而将所述钙输送到所述试剂层。 该改进包括至少一个所述试剂层和显影层,其含有式MvHwPO4xZH2O的碱性物质,其中M是锂,钠或钾; v是2或3的整数,w是0或1的整数,条件是v plus w等于3; 当M为锂时,Z为1/2,当M为钠时Z为0或2,当M为钾时为0或8; 并且所述试剂层含有(i)3,3'-双[N,N-二(羧甲基)氨基甲基] - 邻 - 甲酚酞和(ii)8-羟基喹啉或其衍生物。
    • 4. 发明授权
    • Direct positive photographic material
    • 直接正面摄影材料
    • US4268621A
    • 1981-05-19
    • US61400
    • 1979-07-27
    • Keiji OgiTakashi SasakiKenichiro OkaniwaYasuo Tosaka
    • Keiji OgiTakashi SasakiKenichiro OkaniwaYasuo Tosaka
    • G03C1/485G03C5/24G03C1/06
    • G03C1/48538
    • A light-sensitive silver halide photographic material of internal latent image type for use in the formation of a direct positive image containing a compound of the following general formula (I) or (II):General formula (I) ##STR1## General formula (II) ##STR2## The photographic material can be developed after a shortened induction period, can yield good positive images that are free from stain when undergoing fogging development, and can yield good direct positive images with a high maximum density and a low minimum density. The photographic material forms a direct positive image when subjected, after imagewise exposure, to an overall light exposure or development in the presence of a fogging agent and can be developed by surface development.
    • 用于形成含有下列通式(I)或(II)的化合物的直接正像的内部潜像型感光卤化银照相材料:通式(I)通式(I) II)照相材料可以在缩短的诱导期后显影,可以产生良好的正图像,当发生起雾时不会产生污点,并且可以产生具有高最大密度和低最小密度的良好的直接正像。 拍摄材料在成像曝光之后,在雾化剂存在下进行整体曝光或显影时,形成直接的正像,并可通过表面显影而显影。