Main quantity

When the vigorous reaction commences, the temperature rises to about 105° and remains at this temp>erature for some time. The main quantity of furfural should not be added until the vigorous reaction has started if this precaution is ignored, an explosion may result. 

In evaluating and/or designing compressors the main quantities that need to be calculated are the outlet (discharge) gas temperature, and the energy required to drive the motor or other prime mover. The latter is then corrected for the various efficiencies in the system. The differential equations for changes of state of any fluid in terms of the common independent variable are derived from the first two laws of thermodynamics ... 

Both electronic and microcomputer-based controls require information about the state of the controlled system. Sensors convert different physical variables into an electric signal that is conditioned and typically converted to a digital signal to be used in microcontrollers. The trend in the construction techniques of modern sensors is the use of silicon microstrnctures because of the good performance and the low cost of this type of device. In the energy control scope the main quantities to be measured are the temperature, pressure, flow, light intensity, humidity (RH), and the electric quantities of voltage and current. 

The main quantity providing the dynamic longitudinal polarizability of closed-shell infinite periodic systems is the polarization propagator which at the RPA level takes the form [23-25] ... 

X-ray radiation, respectively, and the time delay x between pump and probe. A5(q, x) is the main quantity to be examined in what follows. 

The experimental methods designed to investigate the energetics of gas-phase ions have been another important source of thermochemical data, particularly throughout the past two or three decades [9,10]. In this chapter, we discuss the main quantities that are measured experimentally and lead to reaction enthalpy values. 

The main quantity to be calculated is the contour Green function... 

The dynamics of the two-particle problem can be separated into center-of-mass motion and relative motion with the reduced mass /i = morn s/(rnp + me), of the two particles. The kinetic energy of the relative motion is a conserved quantity. The outcome of the elastic collision is described by the deflection angle of the trajectory, and this is the main quantity to be determined in the following. The deflection angle, X, gives the deviation from the incident straight line trajectory due to attractive and repulsive forces. Thus, x is the angle between the final and initial directions of the relative velocity vector for the two particles. 

The flow rate through the extruder, the pressure profile along the screw, and the power consumption are the main quantities of interest for design, and these are calculated nextfrom the velocity profile. The net volumetric flow rate Q is obtained by integrating Eq. 6.3-17 across the channel... 

In order to be suitable in the application of the boundary element method (BEM) procedures required to build the reaction field, a molecular surface must be tessellated. A tessellation is a partition of a surface in subsets named tesserae each with a surface area a, a sampling point s and a unit outward vector h at the sampling point. The tessellation elements (a, s, h) are the main quantities used to solve the BEM equations. 

The second of the two main quantities that control the operation of fuel cells is the limiting current. Were one to use flat plate-type electrodes in fuel cells, the... 

The total production capacity in Europe is approximately 265,000 tons p. a., about 5-7% thereof is produced by the wet process, 10-20% by the direct process, and the main quantities (>81%) are manufactured by the indirect process. 

As to its ejection to the atmosphere, sulphur dioxide exceeds all other pollutants (more than 130 ml. t. per year). The main quantity of sulphur dioxide is ejected into the atmosphere by power plants (50.3%), automotive transport (20.0%), ferrous and nonTerrous metallurgy (25.8%), and the petrochemical industry... 

In this section, we present briefly some very general features of the statistical mechanics of quantum systems. For a given system with a Hamiltonian H, the main quantity of interest is the partition function Z((3), where (3 is the inverse temperature... 

First of all, at the lowest temperature the strongest acid distils over, contaminated, however, by HCI, NO..C1, and similar chlorine-containing volatile compounds. Next, there distils over the main quantity of strong acid, fairly pure, but contaminated with red nitrous fumes. To oxidise these a stream of hot air is blown in at U. 

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