Double 35 structure

FIGURE 4-6 Magnification of the myelin sheath of Figure 4-4. Note that the intraperiod line (arrows) at this high resolution is a double structure. (Courtesy of Dr Cedric Raine.)... 

The results for HLSP functions in Table 11.12 show a somewhat different picture. In this case the dominant (but not by much) structure is the one with two n bonds and structures 3 and 4 provide a o bond. Structure 2 is the double structure, but, since HLSP functions do not have a close relationship to the actual state as above, there is less importance to just one Rumer coupling scheme. 

The conformational transitions observed in the simulations [97] resemble in some aspects the so-called zipping transitions [211], the process in which two strongly attracting strands composing the polymer come in contact in such a way as to form a bound double structure, which remains swollen and does not assume compact configurations. The cylindrical-shaped conformations in which the hydrophobic backbone is in a locally collapsed state (Figs. 41e and f) look a lot like three-dimensional zipped structures. 

On the demand side, by the year 2000, the paper industry s fiber requirement is expected to more than double. Structural wood products will continue to expand, but at a somewhat slower rate. Many sources predict a substantial increase in the volume of wood used as fuel for domestic and commercial purposes. Total demand will force the utilization of some more expensive timber sources, thus adding to the average cost. The indicated increase in the real price of fiber reflects these developments. 

Fig. 14. Energy levels of the free radical CN showing the observed optical and radio transition. The violet band is observed against Ophiuchi (Thaddeus and Clauser, 1966) and the radio frequency transitions are measured in the Orion nebula (Jefferts et al., 1970). In the interstellar optical spectra quadrupole hyperfine and spin-doubling structure are entirely unresolved and therefore the rotational levels can be approximated as though the electronic states were However, these splittings are partly resolved in the radio frequency region but we note that only one component of the spin doublet has been observed...

There is a linen cloth decorated with silk flowers on the kitchen table. It is old, and was embroidered by J s mother, 60 years ago. That was on the island of Tasmania, where the family had got marooned at the begiiming of the second world-war. The mother got the silk by telling the shopkeeper that she was alone with two young children, and that her husband had disappeared in the fighting on Java. There was not much silk in Tasmania during the war. Under the microscope you see the double structure of the textile the yarns with a diameter of about 200 am, which are twined from fibres of about 10 am. It is this double structure that provides small pores that allow textile to adsorb moisture and other things. 

A similar performance was reported by the BSA/Alq double structure, for which BSA holds both electron-transport and emitter functions. 

Figure 2.20 Porous canopy. Net air flow through the canopy with average velocity (Uc) (e.g. 0.3-0.5 Uh)- Plume has double structure within and above canopy structure, and also downwind.

A series of double structure themo-hydrological calculations have been performed and are reported elsewhere (Olivella et al, 2003). The results obtained with this single structure model are qualitatively similar to the ones obtained considering explicitly the double structure. 

Suction controlled oedometer tests were performed to gain insight into the characterization of the material, which exhibits a marked double structure a microstructure, which describes the dense aggregates of clay platelets and a macrostructure which includes the inter-aggregate and inter-pellet voids. An important feature of this material is the evolution of the microstructure as the mixture hydrates. 

The first part of the paper is devoted to the characterization of the pore structure and to the presentation of test results which show the importance of the double structure features. In the second part a double structure constitutive formulation is presented. Measured specimen performance is finally interpreted with the model in qualitative and quantitative terms. 

Experimental results have been interpreted within the framework of a double structure model, which seems to capture the essential features of observed behaviour. The proposed model is capable also of making precise quantitative predictions. This has been shown by deriving model parameters from one of the tests performed (liquid injection) and by calculating the response of the vapour transfer test. 

Similar effects can arise from an inappropriate zero cross level in a CFD. If the zero cross level is too close to the signal baseline, the zero cross comparator may oscillate and produce a double structure in the IRF. Therefore the CFD parameters should be checked before a PMT is suspected of producing prepulses. 

The cocatalyst, a combination of Cr and one other metal component, was loaded onto the as-prepared GaN ZnO by a co-impregnation method. In a typical preparation, the co-impregnation was performed by suspending 0.3-0.4 g of the photocatalyst powder in an aqueous solution containing an appropriate amount of Cr (N03)3 9H20 and the nitrate or chloride of the paired metal. The solution was then evaporated to dryness over a water bath followed by calcination in air at 623 K for 1 h. In the case of Ni or Ni-Cr cocatalysts, the impregnated catalyst was reduced by exposure to H2 (20 kPa) at 573 K for 2 h and then oxidized by exposure to O2 (10 kPa) at 473 K for 1 h in a closed gas circulation system to produce an Ni/NiO (core/shell) double structure [48]. 

Figure 1.17 Dipole-allowed absorption in jellium Na2o and its interpretation. The continuous line gives the result from the TDLDA. The nature of the double structure between 0.5 and 1.0 can be understood in two steps. First, the TDLDA is compared with LDA, the independent-particle response (dashed line). Each peak corresponds to one arrow in the upper part of the figure. After turning on the interaction among excited pairs, bare pairs are transformed into dressed pairs. Note that there is a one-to-one correspondence between the spikes in the two curves. As explained in the text there is another effect of this interaction, namely the formation of a collective surface mode at about 0.9. This feature has no counterpart in the dashed curve. Furthermore there is one more collective effect at about 1.2. For more explanation see text. Reproduced with permission from Ekardt, Pacheco and Schone, Comments on Atomic and Molecular Physics, 31, 291 (1995). Copyright by OPA (Overseas Publishers Association) B.V...

As is worth considered, this calculated value is lower than the real because only saturated loess is involved in this calculation and it also has extra collapsibility value induced by unsaturated loess which should be highly attach importance to. Also, the double structures of undisturbed loess below... 

PDMS Protrusions and ridges rf=39.7nm 20 pm length Platelet adhesion Static, in vitro ADP-activated platelets Double-structured surfaces most effective [98]... 

The polarization properties of the EL from tiie double structure allows to clearly observe a variation in the colour from the red to the green, at hig voltages, by simply rotating die axis of a polarizer. 

In the following we examine models for a- and y-Ce which seek to explain the double structures observed in the 4f spectra. First, we consider satellite phenomena as they have been observed in a variety of systems, but then turn to the specific models which center around the Anderson Hamiltonian. Subsequent discussion examines other proposals. 

The properties of eerium differ from that of the other IV 4f ions, because the 4f wave function has just changed Ifom delocalized character in Ba to localized in Ln (Goppert-Mayer 1941). Thus the loealized electron state of the 4f eonfiguration is unstable due to a double well potential as suggested by Bauchspiess et al. (1981). These authors used this model to explain the difference in the behavior of a series of Ce and Yb systems. Whereas Yb eompounds have valenees elose to both extreme integral valences (e.g., Yb Pds and Yb Se), Ce02 and Cep4, in which the Ce ion is expected to be tetravalent, show a distinct double structure in the Lm X-ray absorption spectra, see also Rohler (1987). 

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