Exhaustion range

If the donors and acceptors are present in equal numbers, the material is said to be a compensated semiconductor. At 0 K these materials are insulators, and it is difficult in practice to distinguish between compensated and intrinsic semiconductors. When all of the impurities are fully ionized so that either all the donor levels have lost an electron or all the acceptor levels have gained an electron, the exhaustion range has been reached. 

The indicated figures are examples and do not constitute exhaustive ranges. 

These criteria are restrictive, and it is quite unlikely that any solid will satisfy them over an exhaustive range of conditions however, the concept is widely used and often utilized for interpolation and prediction of dryer performance [3,17]. The use of the mean moisture content as an index of the degree of drying contains the implicit assumption that the extent of... 

In this chapter we have discus.sed a representative, but far from exhaustive, range of problems which can be usefully modelled by SAW in a random or restricted environment, and which can be successfully studied l y series methods. In most cases other approximation tediniques are also applicable, and as a general rule one can be much more confident of conclusions drawn from approximate studies from several different methods—provided, of course, that they are self-consistent. 

The viscosity versus shear rate data for HDPE/PMMA blend were obtained [87] from only a single source [89] and at a solitary temperature of 160°C (Table B3 of pendix B). However, an exhaustive range of 12 compositions including the pure HDPE and pure PMMA polymer were covered. The data were available only in the low-shear-rate range from 0.01 to 1/s. Using a set of 36 data points, the master rheogram shown in Fig. 4.39 was created. 

The heat input to diyers is to a gas and as such takes place over a range of temperatures. Moreover, the gas is heated to a temperature higher than the boiling point of the liquid to be evaporated. The exhaust gases from the dryer will be at a lower temperature than the inlet, but again, the heat available in the exhaust will be available over a range of temperatures. The thermal characteristics of dryers tend to be design-specific and quite difierent in nature from both distillation and evaporation. 

In large systems there can be many orbitals in a small energy range, and the size of the Cl matrix can be very sensitive to the value of the maximum excitation if you use Biergy Criterion. Since calculation time depends heavily on the size of the Cl matrix, you can end up with very long calculations, especially if you use the ab initio methods or the MNDO, AMI, or PM3 semi-empirical methods. This could exhaust the memory of your system. Again, inspecting the results of an RHF (no Cl) calculation will help you avoid these pitfalls. 

It is apparent that numerous other special systems or effects could be considered to either broaden the range or improve the applicability of the derivation presented. Our interest, however, is in illustrating concepts rather than exhaustively exploring all possible cases, so we shall not pursue the matter of gelation further. Instead, we conclude this section with a brief examination of the molecular weight averages in the system generated from AA, BB, and Af. For simplicity, we restrict our attention to the case of r . = u... 

The pot extractor is a batch extraction plant in which extraction and solvent recovery from the exhausted soHds can be carried out in a single vessel. These extractors are normally agitated vessels having capacities in the range of 2 to 10 m, beyond which the battery system becomes a preferred technical alternative. 

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