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Topic: Two phase

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	Convert-A-Phase, Inc., Single to Three Phase Converters
		The phase converter uses the process of induction and capacitors to convert a third phase to be utilized by electrical equipment acceptable to phase converter power.
		Phase conversion really means in the world of a rotary converter that an extra phase is produced in a two phase line that is usually represented by a 1 to 3 phase call out.
		Phase conversion only takes place in the sense that one of the phases of the 1 to 3 phase system is connected to the manufactured phase by a capacitor to maintain a correct phase angle with the existing single phase system.
	www.convertaphase.com (816 words)

	2 Phase Power Systems and Two-Phase Electric Solutions
		Since the two phases were completely electrically isolated from each other, there were no interactions between voltage and current magnitudes in one phase with those quantities in the other phase.
		This 2 phase distribution system remained in use until the middle of the last century, and vestiges of it in the form of four-pole switches could still be found on the service switchboard of at least one old building in Pittsfield in the early 1980s.
		This system included a center tap on one phase of a bank of delta-connected transformers supplying 230 V. The center tap formed a neutral and, in conjunction with the two phase wires of that particular phase, was used to supply 115/230 V services on a single-phase, three-wire basis.
	www.3phasepower.org /2phasesystems.htm (3720 words)

	Two phase - Wikipedia, the free encyclopedia
		Two circuits, or "phases", were used, with voltages 90 electrical degrees apart in time.
		One transformer primary is connected across two phases of the supply.
		The secondaries of the transformers will have two phases 90 degrees apart in time, and a balanced two-phase load will be evenly balanced over the three supply phases.
	en.wikipedia.org /wiki/Two_phase (454 words)

	2 Component Phase Diagrams
		The components are A and B, and the possible phases are pure crystals of A, pure crystals of B, and liquid with compositions ranging between pure A and pure B. Compositions are plotted across the bottom of the diagram.
		The phase relations in the plagioclase system are shown in Figure 3 at constant pressure equal to that of the atmosphere (atmospheric pressure is 1 bar).
		Since solid solutions are really one mineral phase dissolved in another mineral phase to form a single mineral phase, exsolution implies that one or the other of the mineral phases in the solution must "exsolve" or come out of solution with the other mineral phase.
	www.tulane.edu /~sanelson/geol212/2compphasdiag.html (5160 words)

	Two-Phase Mixtures
		The last two results give the conditions of chemical equilibrium, namely that the electrochemical potentials of each of the constituents must be equal across the interface between the liquid and the vapor.
		In general, the properties of the saturated liquid and the saturated vapor are desired as a function of temperature and the mass or mole fractions of the mixture in the liquid phase.
		The superscript, L, is for the liquid phase and the superscript, V, is for the vapor phase.
	physics.ship.edu /~mrc/thermo/ttu_thermo/mixtures/mixtures.htm (2943 words)

	Phase
		Its use for the phases of the moon, which repeat in a regular sequence, gave rise to its use for the time sequence of a signal, particularly a sinusoidal signal, where the phase is represented as an angle that steadily increases with time.
		A schematic phase diagram for a system in which the constituents are completely miscible in both the liquid and the solid phases is shown at the left.
		The difference in concentrations in the regions of two phases is like the difference in specific volume in the regions of two phases in the PVT surface of a single substance.
	www.du.edu /~jcalvert/phys/phase.htm (6901 words)

	PHASE TWO
		Phase Two requires that all undergraduates become proficient in the particular forms of writing used within their major discipline.
		Phase II Papers for 5.32, 3.081, and 10.26 must be submitted for Phase II consideration by the last day of classes of the semester in which you took the subject.
		Phase Two Deadline must fulfill the Requirement by taking an approved writing subject and Petitioning the Committee on the Writing Requirement.
	web.mit.edu /writing/writereq/PhaseII/phasetwo.html (251 words)

	Two-phase asynchronous motor - Patent 4095150
		Thus, for the purpose of accommodating the different phases of the stator winding, only a limited amount of space is available and the magnetic circuit is closed partly via adjacent field magnets, so that the iron cores of these field magnets cannot be subjected to full saturation by their own phase.
		The tapping leads to a connecting point 18 between the two phases PH I and PH II for supplying the field magnet systems of the motor M. The pulses are produced by means of two inverters WI and WII, which are in the form of electronic semiconductor components.
		Between the phases a coupling capacitor may be connected in circuit, which damps the circuit breaking voltages derived from the inductance of the motor M and transmits the energy liberated to the other phase concerned.
	www.freepatentsonline.com /4095150.html (2845 words)

	R: Two-phase designs
		In a two-phase design a sample is taken from a population and a subsample taken from the sample, typically stratified by variables not known for the whole population.
		The population for the second phase is the first-phase sample.
		If the second phase sample uses stratified (multistage cluster) sampling without replacement and all the stratum and sampling unit identifier variables are available for the whole first-phase sample it is possible to estimate the sampling probabilities/weights and the finite population correction.
	faculty.washington.edu /tlumley/survey/html/twophase.html (422 words)

	Amazon.com: Phase Two: Books: C. Scott Littleton (Site not responding. Last check: 2007-11-02)
		Phase Two is one of many new novels on the subject of the UFO phenomenon and its impact on human affairs.
		In Phase Two Scott Littleton has made a bold attempt to understand the reality beyond the reports of lights in the sky, the recovered memories of abductees, the obfuscations of government officials, and the strange fabric of legends and beliefs concerning people from the stars.
		Phase 2 is the beginning of the end of phase 1, during which time the aliens are the protectors and exploiters of humanity.
	www.amazon.com /Phase-Two-C-Scott-Littleton/dp/1931468095 (3040 words)

	Chapter 9. Phase Diagrams
		Thus, the microstructure is specified by the number of phases, their proportions, and their arrangement in space.
		Liquid and two solid phases exist in equilibrium at the eutectic composition and the eutectic temperature.
		A terminal phase or terminal solution is one that exists in the extremes of concentration (0 and 100%) of the phase diagram.
	www.virginia.edu /bohr/mse209/chapter9.htm (1145 words)

	The technology of Phase Shifters and Flangers
		The Univibe uses identical phase shift stages composed of a darlington connected pair of transistors, bootstrapped for high input impedance, and with equal collector and emitter load resistors for producing the two out-f phase signals needed for the next stage.
		An OTA takes the difference of two input voltages, like an ordinary operational amplifier, but its output is not a voltage that is the sum of the two input voltages, but a current that is proportional to the difference between the two input voltages.
		The capacitor also contributes its current, so the two are added at the output node, and since the OTA also reversed the phase of the signal it processed, it looks like it came through an ordinary resistor that was connected to the mirror image of the input signal.
	www.geofex.com /Article_Folders/phasers/phase.html (3302 words)

	phase separation
		Little research has been done around deliberate inducement of phase separation as a means of crystallization (I only found two references in the literature), so it may be a path worth exploring further.
		The crystals (of bovine seminal ribonuclease) grew in the AS-rich phase [2].
		If the protein is more soluble in one phase than the other, it will concentrate in the one where it has the greatest solubility.
	xray.bmc.uu.se /~terese/crystallization/phase_separation.html (1042 words)

	Two Phase Materials
		A cloud is a two phase material consisting of air and water droplets.
		A fiber reinforced piece of plastic could be called a two-phase or two-component material, one "phase" is the fibers, and the other "phase" is the plastic into which the fibers are embedded.
		There is also something called "two phase flow." In science, the word "phase" can also refer to solid, liquid, or gas.
	www.newton.dep.anl.gov /askasci/eng99/eng99350.htm (572 words)

	Two phase exponential decay
		This equation describes a two phase exponential decay.
		In the figure, the two rate constants differ tenfold, but the spans were equal.
		The curve is not obviously biphasic, and it takes a very practiced eye to see that the curve does not follow a single phase model.
	www.graphpad.com /curvefit/id205.htm (62 words)

	Vent Geochemistry: Phase Separation
		The process of phase separation, which takes place either as normal boiling or as brine condensation at supercritical pressures (see figure below), plays a crucial role in determining vent fluid composition.
		Elements are fractionated between the liquid and vapor phases, with ionic species partitioned into the liquid phase and volatile species into the vapor phase.
		There are different mechanisms that can result in the vapor phase becoming segregated from the liquid phase; the point is that it does happen in many hydrothermal systems.
	www.pmel.noaa.gov /vents/chemistry/phase.html (234 words)

	Two-Phase Commit Protocol
		The two phase commit protocol is a distributed algorithm which lets all sites in a distributed system agree to commit a transaction.
		The two phases of the algorithm are broken into the COMMIT-REQUEST phase, where the COORDINATOR attempts to prepare all the COHORTS, and the COMMIT phase, where the COORDINATOR completes the transactions at all COHORTS.
		The greatest disadvantage of the two phase commit protocol is the fact that it is a blocking protocol.
	ei.cs.vt.edu /~cs5204/fall99/distributedDBMS/duckett/tpcp.html (1296 words)

	Two-phase commit protocol - Wikipedia, the free encyclopedia
		The two phases of the algorithm are the commit-request phase, in which the coordinator attempts to prepare all the cohorts, and the commit phase, in which the coordinator completes the transactions at all cohorts.
		In the latter case one of the two edge's nodes is elected as a coordinator (any node).
		D2PC is time optimal (among all the instances of a specific transaction tree, and any specific Tree 2PC protocol implementation; all instances have the same tree; each instance has a different node as coordinator): it commits the coordinator and each cohort in minimum possible time, allowing earlier release of locked resources.
	en.wikipedia.org /wiki/Two-phase_commit (887 words)

	Two-phase aqueous systems (Site not responding. Last check: 2007-11-02)
		A very unexpect phenomenon is formation of two distinct phases, each of which is predominantly water.
		The explanation is quite complicated, but one way to think of it is two different materials that are soluble in water but that are not compatible.
		When two liquids can be brought into contact and later separated, there is the opportunity to find materials that distribute unevenly between them.
	www.rpi.edu /dept/chem-eng/Biotech-Environ/DOWNSTREAM/phase.htm (377 words)

	Aqueous two phase systems: An attractive technology for downstream processing of biomolecules
		Aqueous two phase systems meet all the characteristics of an ideal extraction technology, specially for proteins, since it is less time consuming and has the potential to give high yield and high purity, involving low investment, less energy, and lower labour costs.
		The top phase is formed by a copolymer of PEG and PPG (Synperonic F-68, ICI Petrochemicals and Plastics Division) and the lower phase consists of hydroxyethylated agarose, gelling at low temperatures.
		The aim is to take advantage of their stronger partitioning into one of the phases, and their ability to exhibit specific interactions such as electrostatic interactions and hydrophobic attractive forces, with the target biomolecule.
	www.ias.ac.in /currsci/aug25/articles19.htm (2370 words)

	Two Phase Fluid Flow (Site not responding. Last check: 2007-11-02)
		Bubble flow exists in a continuous liquid phase with dispersed bubbles of gas.
		Churn flow can be characterized by oscillatory, up and down motions of the liquid.
		Liquid flows in an annulus around the edge of the pipe with liquid droplets mixed in the gas phase.
	www.pe.utexas.edu /2phaseweb/flowtwo.html (290 words)

	Studies on Two-Phase Flows at Normal and Microgravity Conditions
		In space, the number of dimensionless groups required to characterize two-phase flows is reduced by two because of the absence of the magnitude of gravity and the angle of orientation with respect to gravity.
		It also reduces the number of dimensionless groups required to characterize two-phase flows by two, because of absence of the magnitude of gravity and the angle of orientation with respect to gravity.
		When the last two ratios are small, the flow pattern transition boundary may be assumed to be a weak function of those two ratios.
	www.isso.uh.edu /publications/A9798/bala.htm (2253 words)

	Two-Phase Content Generation
		In the second phase, the ASP file is executed and an HTTP stream is returned to a browser.
		First phase content generation occurs during a programmable event, such as when an administrator runs a "build" web page, a SQL trigger fires, or a scheduled rebuild occurs.
		Keep in mind that the goal of two-phase content generation is to move as much code as possible from the second phase into the first phase.
	www.webgecko.com /products/apgen/docs/twophase.htm (1811 words)

	System Three: Products: Phase Two
		Phase Two is an ultra high modulus toughened two-Phase epoxy system for composite cored construction.
		Phase Two’s very long pot life makes it ideal for vacuum bagging.
		Use Phase Two Epoxy for building foam and balsa cored boat hulls; sailboards and high-tech composites where the skin laminates carry the load.
	www.systemthree.com /p_phase_two.asp (222 words)

	Phase Two Begins, by Justin Raimondo
		Having installed a Palestinian Quisling where Arafat used to be, the two of them can stand amid the smoking ruins of a war-ravaged Middle East and declare that "peace" has come to the region at last – the peace of the grave.
		Americans will soon be disabused of the myth of the welcoming Iraqis, who hailed their own conquest and embraced the destroyers of their cities.
		One particularly volatile factor is the Shi'a majority — and the recent slaughter of two Iraqi mullahs at a meeting that was supposed to bring about "reconciliation" is a warning the Americans ignore at their peril.
	www.antiwar.com /justin/j041403.html (1813 words)

	Enterprise .NET Community: TSS Featured Entry
		"transaction") fail, we have essentially two choices: undo the ones that are already done or retry the ones that failed.
		The coffee shop interaction is also a good example of a simple, but common Conversation pattern.
		The interaction between two parties (customer and coffee shop) consists of a short synchronous interaction (ordering and paying) and a longer, asynchronous interaction (making and receiving the drink).
	www.theserverside.net /blogs/showblog.tss?id=TwoPhaseCommit (1163 words)

	Anson Parker's Phase Two Blog
		The key to their success was a combination of two things: 1.
		Just because two things are found together doesn't mean one is caused by the other.
		The name was originally a dig at the mythical second phase of a project's development -- where all those postponed good ideas are sent, with no chance of ever seeing realistion.
	phasetwo.org (2862 words)

	Two-Phase Flow Home Page
		A contraction is a reduction in the tubing size.
		Within the contraction, there is a fluid recirculation zone called a "vena contracta." The "wet" image is when the liquid is recirculating with the vena contracta; however, there are conditions whereby the gas phase gets caught in the vena contracta and dries out the wall.
		Wet flow through vena contracta is a bubbly slug flow from a 25mm diameter tube into a 19mm tube; as the liquid is forced to contract, the flow changes from bubbly flow to slug flow.
	microgravity.grc.nasa.gov /6712/2phase_flow/2phase.html (340 words)

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