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：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。