Remaining questions

We list here some remaining interesting problems for 3-valent face-regular two-faced maps  

One of the most interesting questions that arise in this research is to check our conjecture that an infinity of ( a, b), 3)-spheres bRj exists if and only if an ( a, , 3)-torus bRj exists. 

For every pair a/ , bRj and fixed genus g 2, the number of strictly face-regular possibilities is, clearly, finite. But it is, certainly, extremely large. An interesting question would be to decide, what type of strict face-regularity can appear on surfaces of genus g 2. Another direction is to study all weakly face-regular ( a, b), fc)-maps with k A. 

We can also permit a = b, i.e. we can distinguish two classes of a-gons in the main problem. This is similar to (R, 7)-polycycles considered before, where faces were partitioned into holes and proper ones. 

Theorem 12.0.1 Let G be a 3-connected ( a, b), 3)-sphere or torus that is aRi with b 7. Then the following hold  

Recent structural studies have greatly advanced our understanding of signaling by members of the ErbB family of receptors, but many key questions remain. Principal among these is how events on the outside of 

I thank Mark Lemmon, Mark Sliwkowski, and members of my lab for helpful discussions and HHMI and NIH for funding the work in my laboratory. 

Arteaga, C. L. (2002). Overview of epidermal growth factor receptor biology and its role as a therapeutic target in human neoplasia. Semin. Oncol. 29, 3-9. 

Arteaga, G. L. (2003). ErbB-targeted therapeutic approaches in human cancer. Exp. Cell Res. 284, 122-130. 

Waterfield, M. D., Schlessinger, J., Taylor, W. R., and Blundell, T. (1987). On the tertiary structure of the extracellular domains of the epidermal growth factor and insulin receptors. Biochim. Biophys. Acta 916, 220-226. 

ADENO-ASSOCIATED VIRUS VECTORS FOR GENE THERAPY 

Afione, S. A., Conrad, C. K., Kearns, W. G., Chunduru, S., Adams, R., Reynolds, T. C., Guggino, W. B., Cutting, G. R., Carter, B. J. and Flotte, T. R. (1996). In vivo model of adeno-associated virus vector persistence and rescue. J. Virol. 70, 3235-3241. 

Afione, S. A., Wang, J., Walsh, S., Guggino, W. B. and Flotte, T. R. (1999). Delayed expression of adeno-associated virus vector DNA. Intervirology 473. 

Beaton, A., Palumbo, P. and Berns, K. I. (1989). Expression from the adeno-associated virus p5 and pi 9 promoters is negatively regulated in trans by the rep protein. J. Virol. 63, 4450-4454. 

and Linden, R. M. (1995). The cryptic life style of adeno-associated virus. Bioessays 17, 237-245. 

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Hase W L 1998 Some recent advances and remaining questions regarding unimolecular rate theory Acc. Chem. Res. 31 659-65... 

Besides stmctural variety, chemical diversity has also increased. Pure silicon fonns of zeolite ZSM-5 and ZSM-11, designated silicalite-l [19] and silicahte-2 [20], have been synthesised. A number of other pure silicon analogues of zeolites, called porosils, are known [21]. Various chemical elements other than silicon or aluminium have been incoriDorated into zeolite lattice stmctures [22, 23]. Most important among those from an applications point of view are the incoriDoration of titanium, cobalt, and iron for oxidation catalysts, boron for acid strength variation, and gallium for dehydrogenation/aromatization reactions. In some cases it remains questionable, however, whether incoriDoration into the zeolite lattice stmcture has really occurred. 

It is difficult to observe tliese surface processes directly in CVD and MOCVD apparatus because tliey operate at pressures incompatible witli most teclmiques for surface analysis. Consequently, most fundamental studies have selected one or more of tliese steps for examination by molecular beam scattering, or in simplified model reactors from which samples can be transferred into UHV surface spectrometers witliout air exposure. Reference [4] describes many such studies. Additional tliemes and examples, illustrating botli progress achieved and remaining questions, are presented in section C2.18.4. 

The remaining question is how we got from G3MP2 (OK) = —117.672791 to G3MP2 Enthalpy = —117.667683. This is not a textbook of classical thermodynamics (see Klotz and Rosenberg, 2000) or statistical themiodynamics (see McQuarrie, 1997 or Maczek, 1998), so we shall use a few equations from these fields opportunistically, without explanation. The definition of heat capacity of an ideal gas... 

The only remaining question is the nature of the error function. Pulay suggested the difference FDS — SDF (S is the overlap matrix), which is related to the gradient of the SCF energy with respect to the MO coefficients. This has been found to work well in practice. 

Eaton s equation is the most commonly used relationship in the industry. It has provided good results in many areas of the world, even though the basic theory remains questionable. Bit wear corrections were attempted, but since bit wear could not be quantified prior to Anadrill Tj /R technique (see Equations 4-225 and 4-226), the bit wear correction in the d technique is rarely used. 

We shall illustrate the concept with an example (a particle trapped in a hox), which though simple, reveals a number of important consequences of his approach. At the end of this section we shall he ready to move on to the hydrogen atom and see how the concepts apply to it and answer the remaining questions about its spectrum. 

Upon examination of the columns of Pe and PM values for each drug in Table 16, one discovers that the influence of PF is minimal. Therefore, Pe = PM, i.e., permeation of the drugs across the ABL/cell monolayer/filter barriers is governed by the cell monolayer. The remaining questions are (1) To what extent is the transmonolayer diffusional process of uncharged and cationic species gated by the transcellular and paracellular routes and (2) What are the governing factors ... 

We turn now to the remaining question—how to characterize the unfolded population, the topic of this volume. 

The remaining question is, how the deviations from phantom network theory at high branching densities can be explained. 

In Chapter 8, Stavola and Pearton discuss the local vibrational modes of complexes in Si that contain hydrogen or deuterium. They also show how one can use applied stress and polarized light to determine the symmetry of the defects. In the case of the B-H complex, the bond-center location of H is confirmed by vibrational and other measurements, although there are some remaining questions on the stress dependence of the Raman spectrum. The motion of H in different acceptor-H complexes is discussed for the Be-H complex, the H can tunnel between bond-center sites, while for B-H the H must overcome a 0.2 eV barrier to move between equivalent sites about the B. In the case of the H-donor complexes, instead of bonding directly to the donor, H is in the antibonding site beyond the Si atom nearest to the donor. The main experimental evidence for this is that nearly the same vibrational frequency is obtained for the different donor atoms. There is also a discussion of the vibrational modes of H tied to crystal defects such as those introduced by implantation. The relationship of the experimental results to recent theoretical studies is discussed throughout. 

The inflammatory responses, which were small, and the histo-pathological responses to the two types of particles were identical, indicating that the adsorbed organic compounds do not influence the acute response to the diesel soot. The remaining question is whether long-term exposures to carbon black would induce the same incidence of tumors as did long-term exposures to diesel soot. Those studies are underway at the ITR1 and at the Fraunhofer Institute. 

It should be mentioned that the MP0Fe(II)02 intermediate is very similar to the analogous hydroxylating species of cytochrome P450. Thus, the participation of hydroxyl radicals in the reactions catalyzed by peroxidases remains questionable. 

Despite these potential advantages, clinical experience with vasopressin is limited and comparative trials with epinephrine have produced mixed results. Overall, these studies suggest that vasopressin is effective as part of ACLS after cardiac arrest, but its superiority to epinephrine remains questionable. 

Overall, the newly developed alloys, such as Crofer 22 APU and ZMG 232 (developed by Hitachi Metal, Ltd.) [142, 143], are promising candidate alloys for SOFC interconnect applications, but their stability during long-term operation at 650 to 800°C remains questionable. 

Before fluorination, the dielectric constant ofpoly(bisbenzocyclobutene) was 2.8, and this value was reduced to 2.1 after plasma treatment. No data were reported in the paper on characterization of structure or properties, except for the dielectric constant of the modified poly(bisbenzocyclobutene). The authors did report that the thermal stability offluorinatedpoly(vinylidenefluoride) was inferior to the original poly(vinylidenefluoride) when treated in a similar way. One of the probable reasons for the low thermal stability is that the NF3 plasma degraded the polymer. According to their results, the thickness of fluorinated poly(bisbenzo-cyclobutene) was reduced by 30%. The same phenomenon was observed for other hydrocarbon polymers subjected to the NF3 plasma process. A remaining question is whether plasma treatment can modify more than a thin surface layer of the cured polymer Additionally, one of the side products generated was hydrogen fluoride, which is a serious drawback to this approach. 

Table 5.1 shows what the documentation of the screening might look like for this example, if the user decided to proceed to answer the remaining questions. The Comments column is used to indicate where information was obtained for answering each question. The information in Table 5.1 gives an idea of what chemical reactivity hazards will need to be controlled to operate the facility safely. 

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