continuous phase


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phase

 [fāz]
1. one of the aspects or stages through which a varying entity may pass.
2. In physical chemistry, any physically or chemically distinct, homogeneous, and mechanically separable part of a system.
phase 0 in cardiac physiology, the phase representing the upstroke of the action potential, in which rapid depolarization occurs after the cell reaches or is driven to threshold potential. It is the result of the opening of fast sodium channels and calcium channels.
phase 1 in cardiac physiology, the initial rapid repolarization phase of the action potential, caused by the closure of the fast sodium channels and an exodus of potassium from the cell.
phase 2 in cardiac physiology, the phase representing the plateau of the action potential, which contributes to the refractory period of the heart; there is a slow entry of calcium into the cell. It is the result of a balance between inward and outward currents and is particularly long in Purkinje and ventricular cells.
phase 3 in cardiac physiology, the terminal rapid repolarization phase of the action potential; it begins with the closing of the slow channels, resulting in an exodus of potassium from the cell and the activation of the sodium-potassium pump. The result is reestablishment of the normal resting potential.
phase 4 in cardiac physiology, the phase representing electrical diastole, i.e. the time between action potentials. It is the resting phase of the electrical cardiac cycle and is steadily maintained in nonpacemaker cells. In pacemaker cells, the membrane potential is normally reduced slowly until threshold potential is reached; if there is an outside stimulus, it may be driven down more rapidly.
continuous phase in a heterogeneous system, the component in which the disperse phase is distributed, corresponding to the solvent in a true solution. See also colloid.
disperse phase the discontinuous portion of a heterogeneous system, corresponding to the solute in a true solution.
G1 phase a part of the cell cycle during interphase, lasting from the end of cell division (the M phase) until the start of DNA synthesis (the S phase).
G2 phase a relatively quiescent part of the cell cycle during interphase, lasting from the end of DNA synthesis (the S phase) until the start of cell division (the M phase).
M phase the part of the cell cycle during which mitosis occurs; subdivided into prophase, metaphase, anaphase, and telophase.
S phase a part of the cell cycle near the end of interphase, during which DNA is synthesized; it comes between the G1 and G2 phases.

ex·ter·nal phase

the medium or fluid in which a disperse is suspended.
References in periodicals archive ?
The paints contained approximately 1-1.5% HEUR in the continuous phase. In the case where a pigment is flocculating in a paint film, the viscosity as it dries, and the open time will most likely have an effect on the degree of flocculation in the final film.
For the present study, the dispersed phase was the primary emulsion ([W.sub.1]/O), while the continuous phase ([W.sub.2]) was fixed to be 1.5 w% PVA aqueous solutions.
The velocity of the continuous phase at each charging position is given in Table-3.
Depletion flocculation eventually sets in when enough dispersant is present in the continuous phase to associate with the HASE molecules, thus converting them to mainly polyelectrolyte characteristics and weakening the associative network.
The frequencies (F) selected were 1, 1.5, and 2 [s.sup.-1], the amplitudes (A) used were 1, 1.5, and 2 cm, the dispersed phase flow rates ([Q.sub.d]) were 2, 4, and 6 cc/s for the water/toluene and water/butyl acetate systems and 2, 6, and 12 cc/s for the water/ kerosene system, and the continuous phase flow rates ([Q.sub.c]) were 2, 6 and 12 cc/s for all systems.
Maxwell's law was used to calculate the permeability coefficient of a biphasic system composed of a continuous phase and droplet-dispersed domains:
The continuous phase plays a fundamental role in spray paint applications.
Furthermore, secondary and multiple emulsions (continuous phase is entrapped in dispersed drops) were widely observed in the water-in-oil emulsion before inversion.
The PHB domains dispersed in CA continuous phase showed size reduction and changes in the distribution in CA continuous phase compared to uncompatibilized CA/20PHB blend.
The benefit is composed of different missions - Phase 1: Presentation of Report Elaboration (rp)- Phase 2: Definition of the Development Project and Sustainable Development (padd)- Phase 3: Development of Guidance and objectives (doo)- Phase 4: Stop and approval of the document,- Continuous phase 1: Environmental Assessment (ee)- Continuous phase 2: Consultation and communication.
When you decrease the temperature to just above the temperature at which gelatine solidifies and a temperature-induced phase separation occurs, maltodextrin-enriched droplets form in a gelatine-rich continuous phase. Drop the temperature again, and a subsequent phase separation occurs.
The auxiliary composition comprises an admix of a clay and a silicone in an emulsified form comprising a water-in-oil emulsion; a continuous phase comprising a silicone; a discontinuous phase comprising an emulsifier comprising water; and a detersive surfactant.

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