Secondary module distribution

The outline of this paper is as follows. First, a theoretical model of unsteady motions in a combustion chamber with feedback control is constructed. The formulation is based on a generalized wave equation which accommodates all influences of acoustic wave motions and combustion responses. Control actions are achieved by injecting secondary fuel into the chamber, with its instantaneous mass flow rate determined by a robust controller. Physically, the reaction of the injected fuel with the primary combustion flow produces a modulated distribution of external forcing to the oscillatory flowfield, and it can be modeled conveniently by an assembly of point actuators. After a procedure equivalent to the Galerkin method, the governing wave equation reduces to a system of ordinary differential equations with time-delayed inputs for the amplitude of each acoustic mode, serving as the basis for the controller design. 

Where branch primordia are found evenly distributed along the module, but development of primordia into secondary modules is localized or complanate, it can be supposed that the branching pattern seen reflects mechanisms involving control or release of dormancy. The role of auxins, specifically indolyle-3-acelic acid (lAA), in apical donfinance has been shown to be similar to that in vascular plants (see Cooke et al., 2002, for summary), and can be expected to have an important role in the suppression or release from dormancy of branch primordia. For example, if the apical cell of the primary module is producing auxins that suppress development, branch primordia will develop only when they are sufficiently far from the apical cell for the levels of auxin to have dropped to a certain level. Similarly, the density of secondary modules may also reflect auxin control of module development, with branch primordia remaining dormant where the density of secondary modules has reached a local optimum. There is also evidence that lAA can control development of body-plan (i.e., selective development of branch primordia) (Cooke et al., 2002). 

Fig. 4.6.7 Projections along the secondary diagonal from the 2D VEXSY experiments presented partly in Figure 4.6.5 and 4.6.6. (a) Distribution of velocity change obtained among others from Figure 4.6.5 (a, d) of the SMC module, (b) Distribution of velocity change obtained among others from Figure 4.6.6(a, d) of the SPAN module, (c) Three out of six distributions presented in (a) and (b) are displayed as the distribution of acceleration, which is obtained by dividing the velocity...

Polyethylene is a man-made homopolymer. Its chemical synthesis is well understood. It is a random walk polymer with little secondary or tertiary structure. A batch can largely be characterised by its molecular weight distribution, and its rheology can be related to these parameters by developed rules of polymer behaviour. The action of specific chemicals as plasticisers can be used to modulate these bulk properties in a predictable way, allowing the nature and characterisation of its glass to fluid transition to be predicted. 

A KMS provides access to and distribution of information and knowledge that is available in an entire enterprise. The main goals of such a system are to manage the entry, access, and distribntion of primary (raw data), secondary (information), and tertiary (knowledge) data within an enterprise. The main modules in such a system are as follows ... 

The pulse height distribution at high detector gain often shows a structure, probably due to the discrete numbers of secondary electrons emitted at the first dynode. An example for an H7422P-40 module is shown in Fig. 6.14. 

Frykman, S.A., Tsuruta, H., Starks, C.M., Regentin, R. et al. (2002) Control of secondary metabolite congener distributions via modulation of the dissolved oxygen tension. Biotechnol. ProgK, 18 (5), 913-920,... 

The standard form of case and interface unit comprises a 19" 4U high system, configured to accept two servo drive modules and one sequence controller. The as supplied system provides for conventional primary and secondary axis control with automatic raster pattern generation. Alternatively, the unit may be custom configured to suit other specific requirements. The interface unit consists of a lU high panel which contains all the input and output connectors, the scanning including mains power. Two cables communicate with mechanism, either directly or via a distribution box, described below. 

The laboratory total angular distributions 1(0) were obtained by taking at least four scans of 30-90 s counts at each angle. The secondary target beam was modulated at 160 Hz by a tuning fork chopper for background subtraction. 

Velocity distributions of the reactively scattered products can be measured by time of flight (TOF) methods in which the velocity of a particle is determined by measuring the time required for the particle to traverse a known distance in the detector. Although not indicated in Figure 2, a chopper with very narrow slits chops the reactively scattered products as they enter the detector at a frequency (1600 Hz, typically) which is high compared to the secondary beam modulation frequency. The... 

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