Stepping mode

Single-phase operation moves the rotor from 0°, to 90°, to 180°, to 270°, and to 360°, whereas the two-phase mode uses adjacent pairs of electromagnets so that rotor comes to a balance point between them, pulling the rotor from 45°, to 135°, to 225°, and to 315°. With pairs of electromagnets activated, the torque is increased. The half-step mode is a combination of both single phase and two phase, pulling the rotor from... 

If R1 and/or R2 are hydrogen the selectivity drops nearly to zero. The transformation can also be performed in a two-step mode. Thus, imine 235 could be prepared by simple condensation of 233 and 234 in the presence of molecular sieves, and this then cyclized in the presence of SnCl4. 

The Beckmann rearrangement (details Figure 14.42) is a [1,2]-rearrangement in which the occurrence of a nitrenium ion is avoided via the one-step mode of elimination and rearrangement (second to last entry in Table 14.1). 

To see the values of the selected variables or expressions, you must be in Step mode. The variables will be listed in the Watches pane (Figure 14-23), which is usually located below the Code window. The current values of the variables will be displayed as you step through the code. 

It is possible to vary the load or, in hard machines, the displacement, either in ramp mode or with a discontinuous increment (step mode). The ramp function needs to be smooth, as well as linear, and there is evidence (Mayo Nix, 1988) that if the ramp is digitally controlled, the data will vary for the same mean loading rate according to the size of the digitally produced load increments, unless these are very small. 

Chronoabsorptometry has been applied to the determination of heterogeneous electron-transfer parameters in single-step irreversible [55] and quasi-irreversible kinetics [56] and in double potential step modes [57]. In the case of a single potential step for the reaction... 

Concurrent computer A collection of individual von Neumann, or sequential, nodes joined together to work on the same problem. We use concurrent and parallel as synonymous terms in this article. Sometimes concurrent is used to denote asynchronous and parallel to denote synchronous or lock-step modes. However, this distinction is not generally accepted. 

For example, is a single-step mode needed for troubleshooting ... 

Actual Sample Temperature. Any polymer sample will take a finite time to reach thermal equilibrium, and this is frequently commensurate with the timescale of the experiment. Most polymers have poor thermal conductivities. Thus, the most accurate measurements are made isothermaUy in the step mode, since a soak period can be arranged so that the sample reaches thermal equilibrium. Poorly designed ovens can exacerbate the problem. The guideline of 2 °C/min as the maximum rate for temperature scanning in the ramp heating mode is a useful one for a DMA instrument. This is the rate specified in the various ASTM standards (e.g., ASTM E1640-07, ASTM E1867-06 see Appendix). Samples such as thermoset adhesives coated onto wire mesh, which are thin and have... 

The application of conservative approach does not mean that new technical solutions could not be implemented, and that only an evolutionary approach should be applied to NPP design. Be it so, this would cause stagnation of scientific and technical progress. However, as the use of practically verified technical solutions ensures the applicable technical and economical parameters of SVBR-75/100 NPP [2], further improvements can be realized in a step-by-step mode when changing over to the next generation of installations of a given type. 

Continuous or pulse mode (flash pyrolysis) step mode (temperature-programmed pyrolysis)... 

A step mode of heat treatment of fibers under tension or in the free state in a vacuum, inert atmosphere, or in air is usually used. Table 10.3 shows how the physical-mechanical properties of fibers formed from a LC melt of a polyester based on a mixture of tere- and isophthalic acids and l,4-bis(3,5-dimethyl-4-hydroxybenzoyl)benzene [66] change as a function of the heating mode (24-h duration of each stage). The strength of the fiber increases by approximately four times as a result of the heat treatment, and this increase takes place with a simultaneous increase in the elongation at break, which is very important In many cases, thermal drawing of the fiber is less effective than its heat treatment in the free state. To reduce the duration of the heat treatment, it has been proposed that the fiber be preliminarily treated with aqueous solutions of alkali metal halides, of which potassium chloride and iodide are the most effective [67]. 

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