Recombinant studies

The success of CD CdS in photovoltaic cells has driven related research with potential applications in other semiconductor devices. Since the CD process seems to play a role in the favorable properties of the CdS windows by decreasing interface recombination, studies of its passivation properties on other interfaces and surfaces have been carried out, with considerable success. For example, when a very thin film (ca. 6 nm) was deposited between InP and SiOi, the resulting reduction of the interface state density led to improved electrical properties of metal-insulator-semiconductor capacitors and field effect transistors (FETs)... 

Other recombinant studies showed that recombinant N-terminal and other regions of fibrillin-1 have a tendency to dimerise (Ashworth et al, 1999b Trask et al., 1999). An unpaired cysteine residue in the first hybrid domain, which contains nine cysteines, is predicted to be involved in covalently linking N-terminally-aligned fibrillin-1 molecules (Reinhardt et al., 2000b). N- and C-terminal halves of the fibrillin-1 molecule, and the N-terminal half of fibrillin-2, were shown to interact with high affinity in solid-phase and BIAcore binding assays (Tiedemann et al., 2001). However, N- and C-terminal fibrillin-2 polypeptides did not interact with each other. These data demonstrated that fibrillins can direcdy interact in an N- to C-terminal fashion to form homotypic fibrillin-1 or heterotypic fibrillin-1/fibrillin-2 microfibrils. 

Quint, W., Kaiser, R., Hall, D.S. and Gabrielse, G. (1993). (Anti)hydrogen recombination studies in a nested Penning trap. Hyperfine Interactions 76 181-188. 

A desirable, but difficult extension of dissociative recombination studies would be the determination of are for excited ions such as vibrationally excited ions in their ground electronic states and the electronically excited 02 (4I1U) and NO+ (3S) ions all of which undoubtedly exist in the ionosphere. As well as being of ionospheric significance, such data would also be of fundamental interest in that it would assist in clarifying theoretical models of the dissociative recombination process. 

There have been extensive analyses of segments of the 243-245 amino acids of apoA-I by Sparrow, Gotto et al. and by several other groups. Analysis of the amino acid sequence reported by Baker et al. shows that there are 13 sequences that, on Chou-Fasman analysis (C13), have a high probability of helix formation (S52). There is experimental evidence, using synthesized sequences of apoA-I in lipid recombination studies, to support the Chou-Fasman predictions of helicity [summarized by Sparrow and Gotto (S52)]. 

Very fast recombination process can be studied by photoluminescence transients [182,199]. In this experiment, very short laser pulses are used and ultra-fast recombination studied. For a mechanically polished but unetched sample of n-CdSe, luminescence decay times of 50 ps were found due to recombination in the damaged surface layer. On etching, the quantum yield for luminescence and the decay lifetime were both substantially increased [182]. 

Such recombination studies in our laboratory and others 17, 48, 54) have shown clearly the multi-enzymic character of the complete cellulase system. When recombined with fraction I enzymes, fraction II or fraction III enzymes from chromatography of the water fraction proteins on DEAE-Sephadex caused the degradation of hydrocellulose. 

Bray GL, Gomperts ED, Courier S, Gmppo R, Gorden EM, Manco-Johnson M, Shapiro A, Scheibel E, White G, 3rd, Lee M. A multicenter study of recombinant factor VIII (Recombinate) safety, efficacy and inhibitor risk in previously untreated patients with hemophiha A. The Recombinate Study Group. Blood 1994 83(9) 2428-35. 

To detect the odour-active volatiles. Fuller et al. [6] described a system for the sniffing of GC effluents which was improved and applied to food samples by Dravnieks and O Donnell [7]. The new technique, named GC olfactometry (GCO), was the starting point for the development of a systematic approach to the identification of the compounds which cause food aromas. As summarised in Table 6.23 the analytical procedure consists of screening for key odorants by special GCO techniques, quantification and calculation of OAVs as well as aroma-recombination studies. During the last decade these steps have been critically reviewed by Acree [8], Blank [9], Grosch [10, 11 ], Mistry et al. [12] and Schieberle /fi/. 

IP Receptors. IP receptors mediate an increase in cAMP levels through Gg (163), but recombinant studies in CHO cells have also revealed a phosphatidyl inositide response that is cholera- and pertussis toxin-insensitive, suggesting the involvement of Gq (126). 

Howard-Flanders P, Boyce RP (1966) DNA repair and genetic recombination studies on mutants of Escherichia coli defective in these processes. Radiat Res (Suppl)... 

The results given here will also allow for the possibility of soft forces among the solute molecules. Hence, if we shut off the hard elastic and reactive terms among these species, our kinetic equation can describe the motion of a pair of particles in an arbitrary potential, thus providing a possible model for atom recombination studies. 

The use of oxidative reactions catalysed by iron to cleave DNA has been developed by Dervan and coworkers (Dervan, 1986). In these reactions, hydrolysis of the phosphate does not occur but rather destruction of a bond to the sugar through a free radical reaction analogous to that caused by Fenton s reagent. This reaction is irreversible and therefore is important for analysis rather than for synthetic recombination studies. 

Dissociation of the hydrogen halides HF, HC1, DCF and HBr has been studied in shock waves. In contrast to homonuclear diatomic molecules, subsequent bimolecular reactions must be taken into account unless the ratio of reactant concentration to carrier gas concentration is kept sufficiently low. For instance, in HCl dissociation at [HCl]/[Ar] around 10 the reactions H + HCl Hg + Cl and Cl + HCl CI2 + H follow the unimolecular dissociation HCl + Ar - H + Cl + Ar. In addition the dissociation of CI2 and H2 must be considered. The interpretation of these dissociation studies may therefore be very complex. Representative results are given in Table 1.3. These fit quite reasonably into the picture found for homonuclear diatomic molecules. No direct recombination studies appear to be available. 

In low pressure recombination studies at room temperature the influence of difierent colUsion partners has also been investigated. 

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