Abstract: A rotor, which has a center and a periphery, of a centrifuge analysis device. The rotor comprises, from the center of the periphery: central receptacles for liquids to be diluted before analysis; calibration vessels and overflow vessels disposed circumferentially adjacent to each other in respect to a circle concentric with the rotor; a mixing vessel communicating with each calibration vessel; and a plurality of measuring cells, each connected to the mixing vessel through a duct. Each calibration vessel is further provided with: a feed orifice through which it comunicates with one of the central receptacles; an exit orifice located in the wall of said calibration vessel opposite the feed orifice and permanently open; and an overflow orifice located at a position between said feed and exit orifices and through which the calibration vessel is connected to one of the overflow vessels.

Abstract: An assembly for separating, metering and delivering fluids includes a central rotating member rotatable about a fixed spin axis. A processing chamber holding member is connected to the central rotating member by a centrifugally actuated frame. At rotational speeds below a first predetermined speed, the centrifugally actuated frame is in a first position. At rotational speeds greater than the first speed, centrifugal force moves the frame to a second position angularly spaced from and at greater distance from the spin axis than the first position. A processing chamber is mounted on the holding member and its orientation relative to the spin axis is the same in the first and second positions. Fluid is provided in the processing chamber. By accelerating the processing chamber to the first predetermined speed and decelerating below the first predetermined speed in a selected sequence, specific centrifugal force vectors are generated in the processing chamber that move the fluid and retain it in selected chambers.

Abstract: A high flow sodium chlorate oxygen generator assembly (10) of a relatively small diameter. The generator assembly includes a chlorate candle (12) mounted within a containment vessel (14, 16, 18), the chlorate candle being provided with a deep conical recess (54) which is thinly coated with a rapidly combustible material (56). Ignition of the rapidly combustible material is achieved by extending a hollow ceramic tube (58) from a primer (38) located at one end of the containment vessel, the hollow tube directing the flame from the primer, when ignited, towards the center of the deepest part of the conical depression. The above construction provides a high surface area for burning, and also intensifies the heat flux within the chlorate candle thereby substantially increasing the rate of oxygen output over known chlorate candles of comparable diameters.

Abstract: A device for monitoring the release of a substance from a substrate, e.g., the release of ions through membranes, are disclosed.

Abstract: Gas samples withdrawn from within a reactor vessel, as well as from the feed gas thereto, are passed to gas analyzers for particular components or impurities desired to be measured. The response time of the reactor analysis system employed is advantageously minimized by the elimination of dead gas space upon the closing of control valves and the provisions for rapid purging of the system or of individual gas analyzer feed lines.

Abstract: A modular tissue superfusion chamber includes a receptacle support having a recess therein for receiving one of a plurality of modular bath containers which hold tissue samples being tested for electrophysiological responses to compounds. The receptacle support has a Peltier heater therein and is mounted on a magnetic base with a plurality of pillars.

Abstract: An apparatus for proportioning reaction mixtures, particularly for the manufacture of hard polyurethane foam. The apparatus includes two proportioning cylinders each for proportioning one of the components to a mixing head. The pistons of the two proportioning cylinders can be operated alternatingly for filling the cylinders with the compound and subsequently ejecting the component from the cylinders. Double-acting hydraulic cylinders driven by a common hydraulic pump operate independently from each other the proportioning pistons of the two proportioning cylinders. A servo-controlled proportional valve is provided in each of the connecting lines between the hydraulic cylinders and the hydraulic pump. The control cycles of the proportional valves determining the ejection of the two cooperating proportioning cylinders are adjusted relative to each other so as to temporarily overlap.

Abstract: The cost-effectiveness of sulfur oxides and particulate matter removal is improved by placing a sulfur oxides or other acidic gases removal system and a multi-stage electrostatic precipitator within a single housing. The sulfur oxides or other acidic gas removal system works by spraying a neutralizing slurry or solution into incoming flue gas to form neutral salts which dry in a reaction zone provided between the sulfur oxides or other acidic gas removal system and the electrostatic filtration module. This system also provides for simple retrofitting of existing systems to include SO.sub.2 or other acidic gas removal systems.

Abstract: A sample processor card for use with a centrifuge in which the direction of centrifugal force can be altered at will, wherein the card includes a supply of chemical reagent and inlet means for supplying a chemical sample to the card. The sample is advanced under centrifugal force through capillary means to sample measuring means, and the measured sample is then mixed with reagent to permit a chemical test to be carried out on the reagent, all under centrifugal force.

Abstract: The present invention provides a flexible and transparent ribbon having two continuous longitudinal shoulders disposed along the edges of a face of the ribbon opposite that which is intended to support a plurality of samples to be processed. These shoulders are intended for magnetic, optical, computer or other coding for providing very accurate location, on the order of 10 microns, of elementary sample portions. A space is provided between the shoulders for containing by capillarity a film of appropriate (reactive, rinsing, etc. . . ) liquid. This ribbon may also be provided with micro-wells and is intended to be contained in a cassette of the type used for video tape recording purposes, having jaws and connected to an image acquisition device and to a microprocessor for control purposes and data processing.

Abstract: A blood test strip includes a support member having an upper surface and lower surface. A separating member is disposed on the upper surface of the support member, and includes an upstream end and a downstream end. A recipient member is disposed on the upper surface of the support member in a side by side relation to the separating member. The recipient member includes an upstream end disposed in an adjacent, non-interwoven relation to the downstream end of the separating member to define an incision therebetween.

Abstract: Organic acids are prepared by fermentation and then separated from the fermentation broth by means of an electrodialysis.The present process does not require an addition of an alkali. The organic acids are recovered as free acids with high purity and at high yields.

Abstract: A novel method of determining the onset of the fertile period of a human female is disclosed comprising the step of monitoring the axillary secretions of said female during the course of her menstrual cycle to determine variations in the concentration of androstenol or dehydroepiandrosterone sulfate. A first significant increase in the concentration of either of those compounds following the cessation of menses is indicative of the onset of the fertile period. In each case, a follicular phase peak occurs which exceeds by at least twice the concentration of those compounds present at any other time during the menstrual cycle. As a result, the monitoring of these compounds may act as reliable indicators predicting the occurrence of ovulation in five to seven days, and/or indicating contraceptive measures can still be taken to avoid pregnancy or sexual intercourse can promote fertility.

Abstract: A recording apparatus has a holder for a plurality of reaction vessels including a support plate (11) having an array of holes (15) therein for receiving an array of reaction vessels (16), a housing (10) for receiving the holder and being sealed to prevent entry of stray light, an openable cover (24, 249) for the housing, a film back (12) for holding a photographic film adjacent the underside of the plate (11), and a removable shutter (13) for interposition between the film and the support plate.

Abstract: A chemical sensor having a field-effect transistor as an electronic transducer and used for the analysis of specific constituents in a liquid, the chemical sensor comprising means which permits an externally supplied sample solution to reach a chemical receptor of said chemical sensor but substantially prevents external light from reaching said field effect transistor.

Abstract: A fluidized bed reactor and operating process is disclosed, the reactor including distributor plate means to provide distribution of fluid passing upwardly into a fluidized bed; a mixing chamber positioned below the distributor plate means; fluid entry means, preferably at the base of the reactor, for the passage of fluid into the reactor; flow deflector means associated with the entry means for providing at least an upwardly fluid flow path and an outward fluid flow path along the wall of the mixing chamber to inhibit the accumulation of solids and liquid in the mixing chamber.

Abstract: Apparatus for increasing the efficiency of absorption of oxygen by biodegradable waste and particle break-up thereof, by introducing waste and gas, which may be air, into a collector under a highly agitated state, and agitating the air and waste under pressure in the collector by the impeller of a vortex type centrifugal pump as back pressure is provided to the collector. The collector is mis-matched relative to the impeller to increase the retention and mixing time of the air and waste in the collector.

Abstract: An autonomous continuous analysis method and apparatus using Dip and Read type analytical implements. A series of operations of taking out analytical implements, dipping them in the sample solution, optical measurement, calculation, and disposal of the used sample solution are performed automatically.The dip stage, in particular, is automated by use of an analytical-implement automatic supply device and an analytical implement automatic handling device which, holding an analytical implement, dips it in the sample solution, and sets it ona reaction turntable. A number of analytical implements are put in a storage section comprising a bottom section provided with an analytical implement groove and at least one inside surface which is parallel with the groove, are taken out one by one by the relative movement of the groove and in normal and reverse direction and by stopping in a specified position after confirming by a detector that an implement has been caught in the groove.

Abstract: A method of medically analyzing a liquid sample using a single-piece container (1) made of plastic. The container is divided into a sample storage chamber (4), a calibrated cell (6), a diluent storage chamber (30), and reaction chambers (40, 50, 60). Various centrifuging operations are performed to cause the sample and the diluent to pass successively through the various reaction chambers.

Abstract: In the desulfurization of flue gas utilizing limestone as absorbent in a double loop system, in which the flue gas is introduced into a quenching zone for contact with a first slurry of the limestone, and thereafter passes to an absorbing zone for further contact with a second limestone slurry, the two slurries being supplied from a mixing zone into which water and limestone are charged, and in which air is introduced into the quenching zone to convert the calcium sulfite present in it to gypsum, air is also supplied to the mixing zone to convert calcium sulfite in it to gypsum, and limestone is directly added to the quenching zone.