公开(公告)号：US3964865A

公开(公告)日：1976-06-22

申请号：US545298

申请日：1975-01-30

申请人： Manik L. Das

发明人： Manik L. Das

IPC分类号： G01N33/96 ,  G01N21/20 ,  G01N33/16

CPC分类号： G01N33/96 ,  G01N2333/805 ,  Y10T436/105831 ,  Y10T436/108331

摘要： A preweighed vial of lyophilized methemoglobin (ferrihemoglobin) provides a simple, stable, reproducible standard for colorimetric determination of total hemoglobin concentration in whole blood by the cyanmethemoglobin method. Conversion of the standard and of hemoglobin in blood samples to cyanmethemoglobin is accomplished with Drabkin's solution reconstituted from a dry powder and having an added non-ionic surface active agent (Brij-35). Color intensity is measured at 540 m.mu..

摘要翻译： 一种预先称重的冷冻干扰血红蛋白小瓶（铁血红蛋白）提供了一种简单，稳定，可再现的标准，用于通过青色血红蛋白法测定全血中总血红蛋白浓度的比例。 将血液样品中的标准物和血红蛋白转化为氰氯化血红蛋白是用Drabkin's溶液从干燥粉末重新构成并具有添加的非离子表面活性剂（Brij-35）完成的。 颜色强度为540米。

公开(公告)号：US3859538A

公开(公告)日：1975-01-07

申请号：US41114673

申请日：1973-10-30

申请人： STROEMBERG OY AB

发明人： MANNONEN PENTTI

IPC分类号： G01N21/89 ,  G01N21/20

CPC分类号： G01N21/89

摘要： The invention relates to an amplification circuit for a photoelectric device - for example, a phototransistor - whereby the output from such circuit is responsive to percentage changes in the light incident upon said device rather than absolute changes therein or in the condition of the circuit. The device is connected in series with a diode junction across a potential supply and the current passing therethrough controls the bias applied to a transistor connected across a potential supply and having diode junction characteristics similar to those of the first-named junction. The output signal from the circuit is thus dependent upon the current flow through the transistor, which is controlled by the bias applied thereto. Also disclosed and claimed is the application of the circuit to a web fault detector apparatus.

摘要翻译： 本发明涉及用于光电装置的放大电路，例如光电晶体管，由此来自这种电路的输出响应入射到所述装置上的光的百分比变化，而不是其中的绝对变化或电路的状态。 该器件与电源上的二极管结串联，并且通过的电流通过控制施加到跨越电势源的晶体管的偏压并且具有与第一命名结的类似的二极管结特征。 因此，来自电路的输出信号取决于通过晶体管的电流，其由施加到其上的偏置来控制。 还公开并要求保护的是将电路应用到卷筒纸故障检测装置。

公开(公告)号：US3798004A

公开(公告)日：1974-03-19

申请号：US3798004D

申请日：1972-04-18

申请人： AMES YISSUM LTD

发明人： ZERACHIA A ,  FRIEDGUT N ,  STEINMAN G

IPC分类号： G01N21/77 ,  C12M1/26 ,  G01N31/22 ,  H04N9/82 ,  G01N21/06 ,  G01N21/20

CPC分类号： G01N31/22 ,  H04N9/8205

摘要： An improved dip and read type test device having a flat bibulous matrix having an indicator incorporated therewith, the matrix being disposed between and attached to a pair of liquid impervious members and having exposed peripheral edge portions such that upon immersion into a solution containing material to which said indicator is responsive, flow of said solution into said matrix through said edge portions causes formation of measurable visible indicia pattern on the matrix.

摘要翻译： 一种改进的浸渍和读取型测试装置，其具有平坦的吸水性基质，其具有与之结合的指示剂，所述基质设置在一对液体不可渗透构件之间并附着到一对液体不可渗透构件上，并且具有暴露的外围边缘部分，使得在浸入含有材料的溶液 所述指示器是响应的，所述溶液通过所述边缘部分流入所述基质，导致在基质上形成可测量的可见标记图案。

公开(公告)号：US3554655A

公开(公告)日：1971-01-12

申请号：US3554655D

申请日：1969-01-27

申请人： NEBETCO ENGINEERING

发明人： EINSTEIN HARRY

IPC分类号： G01N21/29 ,  G01N21/12 ,  G01N21/20

CPC分类号： G01N21/29

摘要： A DEVICE FOR MEASURING THE DENSITY OF SMOKE SUITABLE FOR MEASURING THE DENSITY OF EITHER WHITE SMOKER OR BLACK SMOKE. THE DEVICE COMPRISES ONE OR MORE SHUTTERS, SUCH AS ROTATING DISCS, SO PLACED AS TO PARTIALLY PERIODICALLY INTERFERE WITH THE FIELD OF VISION OF A VIEWING TUBE THROUGH WHICH THE SMOKE UNDER EXAMINATION IS VIEWED. THE DENSITY OF THE SMOKE IS MEASURED BY COMPARING THE APPEARANCE OF THE SMOKE WITH THE APPEARANCE OF AMBIENT AIR THROUGH THE ROTATING SHUTTER IN THE FIELD OF VISION. THE DEVICE MAY BE USED FOR WHITE SMOKE AS WELL AS BLACK SMOKE DENSITY MEASUREMENT BY REFLECTING LIGHT OFF THE SHUTTER AS IT IS ROTATING. FOR MEASURING THE DENSITY OF EITHER WHITE SMOKER OR BLACK SMOKE. THE DEVICE COMPRISES ONE OR MORE SHUTTERS, SUCH AS ROTATING DISCS, SO PLACED AS TO PARTIALLY PERIODICALLY INTERFERE WITH THE FIELD OF VISION OF A VIEWING TUBE THROUGH WHICH THE SMOKE UNDER EXAMINATION IS VIEWED. THE DENSITY OF THE SMOKE IS MEASURED BY COMPARING THE APPEARANCE OF THE SMOKE WITH THE APPEARANCE OF AMBIENT AIR THROUGH THE ROTATING SHUTTER IN THE FIELD OF VISION. THE DEVICE MAY BE USED FOR WHITE SMOKE AS WELL AS BLACK SMOKE DENSITY MEASUREMENT BY REFLECTING LIGHT OFF THE SHUTTER AS IT IS ROTATING.

公开(公告)号：US3547586A

公开(公告)日：1970-12-15

申请号：US3547586D

申请日：1967-06-05

申请人： JERRY W DENNEY ,  LARRY W DENNEY

发明人： DENNEY JERRY W ,  DENNEY LARRY W

IPC分类号： G01N33/84 ,  G01N21/06 ,  G01N21/20

CPC分类号： G01N33/84 ,  G01N2800/04 ,  Y10T436/166666

公开(公告)号：US3536448A

公开(公告)日：1970-10-27

申请号：US3536448D

申请日：1967-07-28

申请人： MILES LAB

发明人： PURUSHOTTAMDAS CHITTARANJAN

IPC分类号： G01N33/52 ,  G01N21/20 ,  G01N21/22 ,  G01N33/16

CPC分类号： G01N33/52 ,  Y10T436/148888

公开(公告)号：US4175923A

公开(公告)日：1979-11-27

申请号：US919395

申请日：1978-06-26

申请人： William G. Friend

发明人： William G. Friend

IPC分类号： C12Q1/28 ,  G01N33/72 ,  G01N21/20 ,  G01N33/16

CPC分类号： G01N33/726 ,  C12Q1/28 ,  C12Q2326/00 ,  Y10S436/904 ,  Y10T436/25

摘要： A method for determining the presence of occult blood in the bowl of a toilet containing water and fecal matter includes the steps of applying a developing solution to a sheet of absorbent paper impregnated with a guaiac reagent to form an activated test sheet of paper, and contacting the test paper with the water in the toilet bowl. Preferably, the test sheet is an absorbent paper impregnated with a guaiac reagent and having only a portion thereof additionally impregnated with blood in an amount sufficient to react with the guaiac in the presence of a developing solution to dye the paper blue. The blood impregnated portion of the sheet upon use forms a dyed test strip with which the person using the paper can make a comparison to determine whether and the extent to which the actual guaiac reaction has taken place on the remaining portion of the sheet.

摘要翻译： 一种用于确定含有水和粪便的马桶的碗中的潜血的存在的方法包括以下步骤：将显影液施加到浸渍有愈伤剂试剂的吸收纸片上，以形成活化的测试纸，并接触 试纸用水在马桶里。 优选地，测试片是浸渍有愈伤剂试剂的吸收纸，并且其仅一部分另外浸渍有足够量的血液，在显影液存在下与愈伤组织反应以染色纸蓝。 使用的片材的血液浸渍部分形成染色试纸，使用该纸的人可以与其进行比较，以确定实际愈伤组织反应是否发生在片材的剩余部分上的程度。

公开(公告)号：US4162208A

公开(公告)日：1979-07-24

申请号：US892953

申请日：1978-04-03

申请人： Frederick J. Aladjem ,  Padmasini K. Ayenger

发明人： Frederick J. Aladjem ,  Padmasini K. Ayenger

IPC分类号： G01N27/447 ,  G01N27/26 ,  G01N21/20 ,  G01N33/16

CPC分类号： G01N27/44721

摘要： Methods are described by which immunochemical procedures such as immunodiffusion and immunoelectrophoresis can be used to provide quantitative measurement of the concentration of individual proteins in fluids such as serum, spinal fluid, tissue extracts and the like. That is accomplished typically by making quantitative optical measurements of the zones of precipitation which are produced, in parallel with those of standard preparations containing known concentrations of the proteins to be determined; deriving from the measurements of the precipitation zones selected parameters; and comparing the selected values of the experimental and reference preparations. The zone measurements are preferably made by scanning the plates electronically, with suitable arithmetic manipulation of the resulting video values at a plurality of selected positions for each zone.

公开(公告)号：US4086129A

公开(公告)日：1978-04-25

申请号：US628328

申请日：1975-11-03

申请人： Romeo John Conca ,  John Patrick Gray ,  Tod Hunter Sloan

发明人： Romeo John Conca ,  John Patrick Gray ,  Tod Hunter Sloan

IPC分类号： D21C3/04 ,  D21C3/22 ,  G01N21/20 ,  D21C7/12

CPC分类号： D21C3/228 ,  Y10T436/186

摘要： A process for accurately controlling the intrinsic viscosity of sulfite pulp at the termination of a digestion operation comprising predetermining the duration of digestion time required to obtain a given pulp intrinsic viscosity for a range of initial weight ratios of combined SO.sub.2 to wood, determining during the digestion operation the initial weight ratio of combined SO.sub.2 to wood by measuring the rate of change of absorbance in the digestion cooking liquor and terminating the digestion operation at a time corresponding to the predetermined time required to obtain the given pulp intrinsic viscosity at the aforesaid combined SO.sub.2 to wood ratio.

摘要翻译： 在消解操作终止时精确控制亚硫酸盐纸浆的特性粘度的方法，包括预先确定在消化过程中确定组合的SO2与木材的初始重量比范围内获得给定纸浆特性粘度所需的消化时间的持续时间 通过测量消化蒸煮液中的吸光度变化率来操作组合的SO2与木材的初始重量比，并在与上述组合的SO2获得给定纸浆特性粘度所需的预定时间相符的时间终止消化操作， 木比。

公开(公告)号：US3754867A

公开(公告)日：1973-08-28

申请号：US3754867D

申请日：1971-09-20

申请人： BJORKSTEN RES LAB INC

发明人： GUENTHER K

IPC分类号： G01N21/78 ,  G01N33/00 ,  G01N21/12 ,  G01N21/20 ,  G01N21/22

CPC分类号： G01N33/0027 ,  G01N21/783 ,  Y10T436/204998

摘要： Low cost system for sensing carbon dioxide content of ambient air. It comprises a thin layer of a chemical reversibly absorbent for carbon dioxide, the pH of which changes in relation with the amount of absorbed carbon dioxide at any time; an indicator present in said film which changes color in accordance with the pH, and a photoelectric system to produce an electric signal proportionate to said color change. In this system substantial independence of humidity is gained by the use as principal solvent in the said thin layer of an ionizing solvent having a vapor pressure in the range of 0-10 mm at temperatures up to 150*F, and compatible with the other components of the system.