公开(公告)号：US3940250A

公开(公告)日：1976-02-24

申请号：US471854

申请日：1974-05-21

Applicant: Chris J. Plakas ,  George S. Glaros

Inventor： Chris J. Plakas ,  George S. Glaros

IPC: G01N21/76 ,  G01N31/00 ,  C12K1/10 ,  G01N33/16 ,  G21H5/00

CPC classification number: G01N21/76 ,  G01N31/00 ,  Y10T436/110833

Abstract: A method and apparatus for testing a sample by means of luminescent reaction to detect reactive materials therein. A light-transparent filter is provided to filter the sample and to carry the residue to a reaction position. A light-transparent surface is provided to carry a reagent to the reaction position. Both surfaces are brought into mutual contact in a region between two photodetectors, which thereby detect the resulting luminescent reaction to provide an indication of the quantity of reactive material present in the sample.

Abstract translation: 一种用于通过发光反应测试样品以检测其中的反应性材料的方法和装置。 提供透光过滤器以过滤样品并将残余物携带到反应位置。 提供透光表面以将试剂携带到反应位置。 两个表面在两个光电检测器之间的区域中相互接触，从而检测所得到的发光反应以提供样品中存在的反应物质的量的指示。

公开(公告)号：US3979181A

公开(公告)日：1976-09-07

申请号：US630943

申请日：1975-11-12

Applicant: Chris J. Plakas

Inventor： Chris J. Plakas

IPC: G01N21/76 ,  G01N21/30 ,  G01N33/16

CPC classification number: G01N21/76

Abstract: An improved apparatus for testing a sample by means of luminescent reaction to detecting reactive materials therein. A translucent ribbon of filter material is provided to filter the sample and to carry the residue to a reaction position. A translucent surface is provided to carry a reagent to the reaction position. Both surfaces are brought into mutual contact in a region between two photodetectors, which thereby detect the resulting luminescent reaction to provide an indication of the quantity of reactive material present in the sample. An improved pinion roller advances the ribbon of filter material in a reliable fashion.

Abstract translation: 一种改进的用于通过发光反应测试样品以检测其中的反应性材料的装置。 提供过滤材料的半透明带以过滤样品并将残余物携带到反应位置。 提供半透明表面以将试剂携带到反应位置。 两个表面在两个光电检测器之间的区域中相互接触，从而检测所得到的发光反应以提供样品中存在的反应物质的量的指示。 改进的小齿轮辊以可靠的方式推进过滤材料带。

公开(公告)号：US3646345A

公开(公告)日：1972-02-29

申请号：US3646345D

申请日：1970-06-22

Applicant: CHRIS J PLAKAS ,  ROSEMARY FRY

Inventor： PLAKAS CHRIS J ,  FRY ROSEMARY

IPC: G01T1/20 ,  G01T7/04

CPC classification number: G01T1/20 ,  G01T7/04

Abstract: Apparatus for measuring the primary productivity in situ of an aquatic sample by detecting scintillation fluorescence through surface contact of a scintillator and metabolized organisms carrying labeled carbon fixed photosynthetically therein, comprising a photosynthesis chamber where sample and labeled carbon are introduced for photosynthetic fixation, a filter tape for filtering the metabolized organisms, a scintillator tape and photomultiplier detector means for converting energy of beta particles to fluorescence and then to electrical pulses that are directly proportional to the amount of labeled carbon fixed by the organisms, a recorder for recording the output data and logic circuitry for programming the sequence of operation, thus accurately determining the primary productivity per unit of biomass.

Abstract translation: 用于通过检测闪烁体的表面接触的闪烁荧光和携带其中固定光合作用的标记碳的代谢生物体来测量水样的原生产力的装置，包括光合作用室，其中引入样品和标记的碳用于光合固定，滤带 用于过滤代谢生物体，闪烁体带和光电倍增管检测器，用于将β粒子的能量转换为荧光，然后转换为与生物体固定的标记碳量成正比的电脉冲;用于记录输出数据和逻辑的记录器 用于编程操作顺序的电路，从而准确地确定每单位生物量的初级生产力。

公开(公告)号：US3963615A

公开(公告)日：1976-06-15

申请号：US519621

申请日：1974-10-31

Applicant: Chris J. Plakas

Inventor： Chris J. Plakas

IPC: B01D29/01 ,  B01D35/02

CPC classification number: B01D29/01

Abstract: A multifiltration unit operated by pressure and/or vacuum and accommodating simultaneously in separate sealed chambers a number of disposable filter holders. The unit has a single cover with self-tightening means.

Abstract translation: 一个多层过滤装置，通过压力和/或真空运行，同时容纳多个一次性过滤器保持器。 该单元具有一个带有自紧装置的单个盖子。

公开(公告)号：US4283490A

公开(公告)日：1981-08-11

申请号：US083758

申请日：1979-10-11

Applicant: Chris J. Plakas

Inventor： Chris J. Plakas

IPC: C12Q1/06

CPC classification number: C12Q1/06 ,  Y10S435/808

Abstract: An improved method for detecting very low concentrations of luminescent reactive molecules from microbial cells in samples of fluids and degraded solids is disclosed. A sample containing microbial cells is treated to eliminate substantially all nonmicrobial material. The microbial cells are then caused to rupture and form a thin film positioned in the vicinity of a photodetector. An appropriate reagent contacts the thin film and the resulting photon emission is observed by the photodetector through an optical filter means which selectively restricts the wavelength of photons which are permitted to pass from the sample to the detector. The strength of the luminescence within the permitted wavelength is measured and recorded as an indication of the concentration of microbial cells in the sample.

Abstract translation: 公开了一种用于在流体和降解的固体样品中从微生物细胞检测发光反应性分子的非常低浓度的改进方法。 处理含有微生物细胞的样品以消除基本上所有的非微生物材料。 然后使微生物细胞破裂并形成位于光电检测器附近的薄膜。 适当的试剂接触薄膜，并且由光电检测器通过光学滤波器装置观察所得到的光子发射，滤光器装置选择性地限制被允许从样品通过到检测器的光子的波长。 测量允许波长内的发光强度并将其记录为样品中微生物细胞浓度的指标。

公开(公告)号：US4013418A

公开(公告)日：1977-03-22

申请号：US659534

申请日：1976-02-19

Applicant: Chris J. Plakas

Inventor： Chris J. Plakas

IPC: G01N21/76 ,  C12K1/10 ,  G01N33/16 ,  G21H5/00

CPC classification number: G01N21/76 ,  Y10S435/808 ,  Y10T436/110833

Abstract: An improved apparatus for testing a sample by means of luminescent reaction to detect reactive materials therein. A ribbon of filter material, which may be translucent or opaque, is provided to filter the sample and to carry the residue to a reaction position. A translucent surface is provided to carry a reagent to the reaction position. Both surfaces are brought into mutual contact in the optical vicinity of a photodetector, which thereby detects the resulting luminescent reaction to provide an indication of the quantity of reactive material present in the sample. An improved pinion roller advances the ribbon of filter material in a reliable fashion. In an alternative embodiment, the ribbon of filter material is used without the translucent surface.

Abstract translation: 一种用于通过发光反应测试样品以检测其中的反应性材料的改进的装置。 提供可以是半透明或不透明的过滤材料带，以过滤样品并将残余物携带到反应位置。 提供半透明表面以将试剂携带到反应位置。 两个表面在光电检测器的光学附近相互接触，从而检测所得到的发光反应以提供样品中存在的反应性物质的量的指示。 改进的小齿轮辊以可靠的方式推进过滤材料带。 在替代实施例中，使用过滤材料带而没有半透明表面。

公开(公告)号：US3676584A

公开(公告)日：1972-07-11

申请号：US3676584D

申请日：1970-07-13

Applicant: CHRIS J PLAKAS ,  MEE SEE PHUA

Inventor： PLAKAS CHRIS J ,  PHUA MEE SEE

IPC: A61B8/00 ,  G01S15/89 ,  H04N7/00

CPC classification number: A61B8/00 ,  A61B8/4209 ,  G01S15/8913 ,  G01S15/8922 ,  G01S15/8945 ,  Y10S367/901 ,  Y10S367/905

Abstract: An ultrasonic visualization system for investigating human tissue structures, comprising pulse generator, power supply, pulse trigger, one transducer which transmits ultrasonic pulses, four transducers, arranged at 90* angles around the center transmitter, which receive reflected echoes, video amplifier and display tube. The output pulses of each pair of receivers 180* apart are connected through time coincidence circuitry to detect echoes originating only at the axis of the ultrasonic beam and to reject multiple reflection echoes, thus echograms of high resolution are obtained.

Abstract translation: 一种用于调查人体组织结构的超声可视化系统，包括脉冲发生器，电源，脉冲触发器，一个传输超声波脉冲的传感器，四个传感器，以90°角围绕中心发射器布置，接收反射回波，视频放大器和显示管 。 通过时间重合电路连接180°的每对接收器的输出脉冲，以检测仅在超声波束的轴线处产生的回波，并且抑制多个反射回波，从而获得高分辨率的回波图。