22-Dehydro-homocholenic acid
    2.
    发明授权
    22-Dehydro-homocholenic acid 失效
    22-脱氢 - 高胆酸

    公开(公告)号:US3922291A

    公开(公告)日:1975-11-25

    申请号:US44245874

    申请日:1974-02-14

    IPC分类号: C07J9/00

    CPC分类号: C07J9/005

    摘要: 22-Dehydrohomocholenic acid and process for preparing the same. 22-dehydrohomocholenic acid finds application as an intermediate in the preparation of 22-dehydro-25-hydroxycholecalciferol and exhibits antibacterial properties.

    摘要翻译: 22-脱氢茂荣酸及其制备方法。 22-dehydrohomholhol acid acid可用作制备22-脱氢-25-羟基胆钙化甾醇的中间体,具有抗菌性能。

    Measurement of hole pressure differentials and protuberance pressure differentials in non-newtonian liquids or the like
    3.
    发明授权
    Measurement of hole pressure differentials and protuberance pressure differentials in non-newtonian liquids or the like 失效
    非牛顿液体中的孔压差异和压力差异的测量

    公开(公告)号:US3777549A

    公开(公告)日:1973-12-11

    申请号:US3777549D

    申请日:1971-07-29

    发明人: SCOTT LODGE A

    IPC分类号: G01N11/02 G01N11/00

    CPC分类号: G01N11/02

    摘要: The hole pressure differential is measured by providing at least one hole in a wall along which the liquid is caused to flow. The wall may constitute a portion of a passage, reaction vessel or the like. A pressure transducer or sensor is recessed into the hole to measure the hole pressure therein. At least one non-hole pressure transducer is also provided to measure the non-hole pressure along the wall. The hole pressure and the non-hole pressure, as measured, are combined subtractively, or otherwise, so as to derive the difference between the non-hole pressure and the hole pressure at a particular location along the wall. The non-hole pressure sensor may be located opposite the hole at a point where the non-hole pressure is the same as it would be at the location of the hole. In another arrangement, two non-hole pressure sensors are provided upstream and downstream at intervals from the hole, in which case the hole pressure may be combined subtractively with the average of the non-hole pressures. Similarly, two holes and hole pressure sensors may be spaced upstream and downstream at intervals from the non-hole pressure sensor so that the non-hole pressure may be combined subtractively with the average of the hole pressures. Other arrangements may utilize a sequence of two non-hole pressure sensors and one hole pressure sensor with subtractive combining means to derive the differential hole pressure. Alternatively, two hole pressure sensors and one non-hole pressure sensor may be arranged in sequence. Similar arrangements may be employed to measure the protuberance or negative-hole pressure differentials, by replacing the holes and hole pressure transducers with protuberances and protuberance pressure transducers.

    摘要翻译: 通过在使液体沿其流动的壁中提供至少一个孔来测量孔压差。 壁可以构成通道,反应容器等的一部分。 压力传感器或传感器凹入孔中以测量其中的孔压力。 还提供至少一个非孔压力换能器来测量沿壁的非孔压力。 测量的孔压力和非空穴压力被减去组合或以其他方式组合,从而导出沿着壁的特定位置处的非孔压力和孔压力之间的差。 非孔压力传感器可以在非孔压力与孔位置相同的点处与孔相对。 在另一种布置中,两个非孔压力传感器设置在距离孔的间隔的上游和下游,在这种情况下,空穴压力可以与无孔压力的平均值相差地组合。 类似地,两个孔和孔压力传感器可以与非孔压力传感器间隔上游和下游间隔,使得非空穴压力可以与孔压力的平均值相差地组合。 其他布置可以利用两个非孔压力传感器和一个孔压力传感器的顺序来减去组合装置来导出差孔压力。 或者,可以依次布置两个孔压力传感器和一个非孔压力传感器。 通过用突起和突起压力换能器代替孔和孔压力换能器,可采用类似的布置来测量突起或负孔压力差。

    Method for casting gray cast iron composition
    5.
    发明授权
    Method for casting gray cast iron composition 失效
    铸造灰铸铁组合物的方法

    公开(公告)号:US3762915A

    公开(公告)日:1973-10-02

    申请号:US3762915D

    申请日:1970-07-27

    发明人: HEINE R LOPER C

    IPC分类号: C22C37/04

    CPC分类号: C22C37/04

    摘要: THE PREPARATION OF CASTING OF GRAY CAST IRON HAVING REDUCED CHILL AND HARD SPOTS WITHOUT INCREASED SHRINKAGE HOLES IN WHICH THE COMPOSITION IS FORMULATED TO CONTAIN A METAL COMPONENT SUCH AS TELLURIUM, SELENIUM, BISMUTH OR MISCH-METAL, PREFERABLY IN COMBINATION WITH TITANIUM, TO CARRY THE METAL TO A LIQUID PORTION BELOW THE EUTECTIC ARREST.

    Electromagnetic flowmeters for blood or other conductive fluids

    公开(公告)号:US3739640A

    公开(公告)日:1973-06-19

    申请号:US3739640D

    申请日:1971-02-08

    发明人: FOLTS J

    CPC分类号: A61B5/0265 G01F1/58

    摘要: The disclosed flowmeter comprises a probe or transducer utilizing a C-shaped electromagnet which includes an energizing coil and is adapted to produce a magnetic field extending across a stream of blood, flowing along a blood vessel, or a stream of some other conductive liquid. The movement of the blood across the magnetic field generates a voltage which is picked up by first and second electrodes. Normally, the coil is energized with an alternating or pulsating current. A first output lead is connected to the first electrode, while second and third output leads are connected to the second electrode. The second and third output leads are on opposite sides of a plane including the electrodes and the first output lead, such plane being parallel to the magnetic field. To minimize transformer-type coupling between the coil and the leads, a potentiometer is connected to the second and third leads. The adjustable tap of the potentiometer and the first output lead are employed as the output connections from the electrodes, the tap being adjusted for minimum error signal output. A grounded electrostatic shield is employed between the coil and the leads. Moreover, a ground electrode is positioned to engage the blood vessel at a neutral point between the first and second electrodes. A second adjustable potentiometer is connected across the supply leads for the coil. The tap of the second potentiometer is grounded and is adjusted for minimum error signal output. One or more adjustable balancing capacitors are connected between at least one of the supply leads and at least one of the output connections. Such capacitors are adjusted for minimum error signal output and are effective to neutralize the distributed capacitances between the coil and the output leads. A soft resilient material, such as silicon rubber, is employed to encapsulate the electromagnet and the output leads. Such material is adapted to be compressed by the pulsations of the blood vessel around which the flowmeter probe or pickup is mounted. Thus, the provision of such soft material prevents damage to the walls of the blood vessel.

    Process for separation of hafnium from zirconium
    8.
    发明授权
    Process for separation of hafnium from zirconium 失效
    从锆石分离铪的方法

    公开(公告)号:US3734689A

    公开(公告)日:1973-05-22

    申请号:US3734689D

    申请日:1969-02-07

    发明人: LARSEN E GIL ARNAO F

    IPC分类号: C22B34/14 C22B59/00

    CPC分类号: C22B34/14

    摘要: A process for separating hafnium from zirconium wherein the tetrahalides of the metals are reacted with a metal selected from the group consisting of aluminum and zirconium in finely divided form in the presence of an aluminum trihalide at a reaction temperature above the melting point temperature for the aluminum trihalide whereby the reaction is carried out in a liquid system with preferential reduction of the zirconium component over the hafnium component to enable separations therebetween.

    摘要翻译: 一种从锆中分离铪的方法,其中金属的四卤化物在铝三卤化铝的存在下,在高于铝的熔点温度的反应温度下,以细分散的形式与选自铝和锆的金属反应 三卤化物,其中反应在液体体系中进行,锆组分优先在铪组分上还原以使其间分离。

    Current-injection spark source for emission spectroscopy
    10.
    发明授权
    Current-injection spark source for emission spectroscopy 失效
    电流注入喷射源用于排放光谱

    公开(公告)号:US3653766A

    公开(公告)日:1972-04-04

    申请号:US3653766D

    申请日:1970-02-04

    摘要: An analytical spark gap is provided between the conductors of a resonant line at one end thereof. The other end of the line is connected to a radio frequency power source which can be electronically pulsed. The conductors of the line are preferably in the form of inner and outer coaxial cylinders. The spark gap is preferably between a first electrode at one end of the inner conductor and a second axial electrode connected by means of an end wall to the outer electrode. A current injection input lead is connected to an intermediate point along the line, so as to provide an effective length of one-quarter wavelength between the injection point and the spark gap. In this way, a node is produced at the injection point. Around the spark gap, the outer conductor forms a cylindrical chamber, in which acoustical resonances are set up, with resulting stabilization of the spark in that the spark is held stationary in an axial position. Optical resonance can also be produced within the chamber by providing a cylindrical mirror on the inside of the outer cylindrical conductor around the spark gap.

    摘要翻译: 在其一端的谐振线路的导体之间提供分析火花隙。 线路的另一端连接到可以电子脉冲的射频电源。 线的导体优选为内部和外部同轴圆筒的形式。 火花隙优选在内部导体的一端的第一电极和通过端壁连接到外部电极的第二轴向电极之间。 电流注入输入引线连接到沿线的中间点,以便在注入点和火花隙之间提供四分之一波长的有效长度。 以这种方式,在注入点处产生一个节点。 在火花间隙周围,外导体形成圆柱形腔室,其中声共振被建立,导致火花的稳定化,因为火花在轴向位置保持静止。 也可以通过在火花间隙周围的外圆柱形导体的内侧设置圆柱形反射镜来在室内产生光学共振。