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公开(公告)号：US4250741A
公开(公告)日：1981-02-17
申请号：US34644
申请日：1979-04-30
IPC分类号： G01N13/02
CPC分类号： G01N13/02
摘要： An improved instrument for the precise measurement of interfacial tension between two fluid phases by means of a drop of the less dense fluid surrounded by the more dense fluid, both fluids spinning together in gyrostatic equilibrium. Elements of the invention eliminate departures from gyrostatic equilibrium which went unrecognized in the prior art. These elements are based on hydrodynamic principles unknown in the prior art. The instrument is characterized by the combined use of air bearings and sample-holder mountings which reduce vibrations and eccentricities, eliminate temperature gradients within the sample, and assure that interfering hydrodynamic flows are suppressed. Other improvements include biprecision sample tube, full visual access to the spinning drop, leveling provisions, timing belt transmission, avoidance of bearing heating and wear problems, and convenient control of sample temperature.
摘要翻译： 一种改进的仪器，用于通过由较稠密的流体包围的较小致密流体的液滴精确测量两个流体相之间的界面张力，两种流体在陀螺静力平衡中一起旋转。 本发明的元件消除了在现有技术中未被认识到的陀螺静力平衡的偏离。 这些元素基于现有技术中未知的流体力学原理。 该仪器的特点是结合使用空气轴承和样品架架，减少振动和偏心，消除样品内的温度梯度，并确保抑制干扰流体动力学流动。 其他改进包括双精度样品管，完全可视化进入纺丝滴，流平装置，同步带传动，避免轴承加热和磨损问题，以及方便的样品温度控制。
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公开(公告)号：US07132247B1
公开(公告)日：2006-11-07
申请号：US09647475
申请日：1999-09-17
IPC分类号： G01N33/53
CPC分类号： G01N33/50 , C12Q1/025 , G01N33/544
摘要： The present invention provides composite biological devices that include biological material as an integral component thereof. The devices can be used for measuring metals, for example, particularly toxic metals such as mercury.
摘要翻译： 本发明提供了包括生物材料作为其整体组分的复合生物装置。 这些装置可用于测量金属，例如特别有毒的金属如汞。
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公开(公告)号：US4753887A
公开(公告)日：1988-06-28
申请号：US894302
申请日：1986-08-07
CPC分类号： G01N1/42
摘要： A system for preparing specimens in a controlled environment to insure that a liquid or partially liquid specimen is maintained in its original state while it is being prepared, and once prepared the specimen is vitrified or solidified with minimal alteration of its microstructure. The controlled environment is provided within a chamber where humidity and temperature can be controlled precisely while the specimen is prepared. The specimen is mounted on a plunger and a shutter controlled opening is opened substantially simultaneously with release of the plunger so the specimen is propelled through the shutter into an adjacent cryogenic bath.
摘要翻译： 一种用于在受控环境中制备样品以确保液体或部分液体样品在制备时保持其初始状态的系统，一旦制备好样品，玻璃化或固化，其微观结构的变化最小。 受控环境设置在室内，在准备样品的同时可以精确地控制湿度和温度。 样品安装在柱塞上，并且快门控制的开口基本上与柱塞的释放同时打开，使得样品通过活门推进到相邻的低温浴中。
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