Stages characteristics

Based on standardized scoring procedures (Rechtschaffen and Kales 1968), the entire sleep period is internally characterized as either rapid eye movement (REM) sleep or non-REM sleep, the latter including stages 1, 2, 3, and 4. Furthermore, stages 3 and 4 form the so-called slow-wave sleep (SWS). In this section, we describe the sleep stage characteristics of depression. 

Webb WB, Agnew HWJ. Sleep stage characteristics of long and short sleepers. Science 1970 168 146-147. 

Why is c-myc, as opposed to other oncogenes, regularly translocated in plasmacytomas and Burkitt s lymphomas There is no particular sequence homology which could favour the interaction between c-myc and switch regions. It is possible that it is the activation of c-myc but not of other oncogenes that induces tumori-genic behaviour in B cells at the maturation stage characteristic for the plasmacytoma and Burkitt s lymphoma precursor cell. 

The principal stage characteristics that depend on the choice of the above independent variables are as follows ... 

Cascade impactors are typically characterized based on the nozzle geometry, number of stages, flow rate capacity, and the range of effective cut-off diameters of the impaction stages. Characteristics of some most commonly used cascade impactors are exemplified in Table 2.1. 

Figure 12.5 Definite time overcurrent relay with a two-stage characteristic.

Even in dried adhesive carrier films or powdered resins, phenolic resins for hardwoods shares the B-stage characteristic of reliquefying briefly under heat and pressure to allow transfer and flow on the glue lines of a plywood panel. This liquefaction can occur without water. This is unlike all but the most recently developed softwood phenolic resins. 

The three suborders are distinct phe-notypically by growth-stage characteristics. 

Fig. 9.7 Illustration of the maximum scattering intensity keeping constant with time evolution as the early-stage characteristics of spinodal decomposition of phase separation...

Following the In [NCO] variation as a function of time, an almost linear dependence could be observed for the initial stages characteristic to the surface process when the excess NCO consumption did not exceed more than 10% from its initial value. This conclusion allowed us to calculate the A nco value as shown in Fig. 4.72. As the reaction advanced inside the depth of PU film with time, the process became dependent also on the water diffusion rate in polymer [59]. 

B-stage characteristic of reliquefying briefly under heat and pressure to allow transfer and flow in the glue lines of a plywood panel. 

The use of an impactor with a single circular orifice for each jet provides a convenient method for determining the aerodynamic size distribution of an easily assayed aerosol, such as of a radioactive aerosol. This type of impactor is preferred when small sample rates and short sampling periods are desired since the stage characteristics can be accurately prescribed and particle bounce or re-entrainment can be minimised with the use of an appropriate liquid film on the collectors. 

Another important characteristic of the late stages of phase separation kinetics, for asynnnetric mixtures, is the cluster size distribution fimction of the minority phase clusters n(R,z)dR is the number of clusters of minority phase per unit volume with radii between R and + cW. Its zeroth moment gives the mean number of clusters at time r and the first moment is proportional to die mean cluster size. 

There is no satisfactory chemical way of distinguishing betn een ethane and methane, both of which burn with an almost non-luminous flame this fact however is quite unimportant at this stage of the investigation. Hydrogen also burns with a non-luminous flame and w hen the open end of a test-tube full of the gas is placed in a Bunsen flame, a mild explosion with a very characteristic report takes place. 

Oxidation, (i) Dissolve 5 g. of potassium dichromate in 20 ml. of dil. H2SO4 in a 100 ml. bolt-head flask. Cool and add 1 ml. of methanol. Fit the flask with a reflux water-condenser and warm gently a vigorous reaction soon occurs and the solution turns green. The characteristic pungent odour of formaldehyde is usually detected at this stage. Continue to heat for 3 minutes and then fit the flask with a knee-tube (Fig. 59, p. 100) and distil off a few ml. Test the distillate with blue litmus-paper to show that it is definitely acid. Then apply Test 3 p. 350) for formic acid. (The reflux-distillation apparatus (Fig. 38, p. 63) can conveniently be used for this test.)... 

Another circumstance which could change the most commonly observed characteristics of the two-stage process of substitution has already been mentioned it is that in which the step in which the proton is lost is retarded because of a low concentration of base. Such an effect has not been observed in aromatic nitration ( 6.2.2), but it is interesting to note that it occurs in A -nitration. The A -nitration of A -methyl-2,4,6-trinitroaniline does not show a deuterium isotope effect in dilute sulphuric acid but does so in more concentrated solutions (> 60 % sulphuric acid kjj/kjj = 4 8). ... 

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