influence of binders on the sensing and electrical characteristics of wo3-based gas sensors

... changing the distribution of interface i states and the electron occupation on them. In some cases, even the concentration of the adsorbed gas ions can be wx measured from the change of potential ... interaction with gas. When gas molecules are adsorbed on the surface of a semiconductor, electron transfer occurs between the semiconductor and the adsorbates...

Ngày tải lên: 20/03/2014, 13:04

... study, the effect of NaCl concentration on the kinetic constants and thermodynamic stability of VsEndA and VcEndA was investigated. In addition, the effects of reciprocal mutations of two non-con- served ... boundary conditions, and the resulting grid was adopted as the boundary condi- tion for one further focused calculation. The protein mole- cules occupied 90%...

Ngày tải lên: 16/03/2014, 06:20

... substitutions imposed on the backbone conformation of WT* shows that the pattern of P37 P38 P19 W45 Fig. 1. Ribbon structure modelled on the X-ray structure of human ubiquitin [32]. The position and ... erturba- tions and the pattern of NOEs in the vicinity of the mutation sites. Deviations of Ha signals from random coil chemical shifts pro vide a sensitive p...

Ngày tải lên: 07/03/2014, 16:20

... linked to the protein by the Ser37 O-c atom. Only residues 31–38 of the protein make extensive contacts with the cofactor. For the sake of better understanding of the interactions, the entire ... structure, on the basis of their percentage contri- butions (65% and 35%, respectively) to the overall structure of the protein. The structures of the major a...

Ngày tải lên: 16/03/2014, 10:20

... residues, and therefore contribute to the s tabilization of the parallel coiled-coil structure b y ionic interactions with residues a t positions e¢ and g¢ of the other helix. P ositions b, c and f ... indicate that the main effects of mutations A63V, K70T and E180G are mainly related to the overall stability of the protein as a whole, rather than on the positi...

Ngày tải lên: 16/03/2014, 18:20

... interaction B-B - between ions in sublattice B and interaction A-B - between ions of sublattices A and B. We denote λ aa , λ bb , λ ab correspond to molecular-field constants of exchange interaction ... lattice constant and volume of unit cell increase with Zn content in the samples due to larger ionic radius of Zn 2+ ion (0.82 Å) substituted for Ni 2+ ion (0.78 Å). The...

Ngày tải lên: 22/03/2014, 11:20

... structures randomly showed a short a helical conformation in the C-terminal part. The dis- ordered conformation in the C-terminal region of D 24)37 GGN4 is probably due to the break of the peptide bond ... both of the environments than those of the other residues (Fig. 2D). However, the orientation of the tryptophan side chain from the helical axis was quite diff...

Ngày tải lên: 31/03/2014, 09:20

... flavone (Bui et aI., 2004). There were studies that only compare the effect of drying methods alone (Chan et aI., 2009); and also study on the optimization of extraction conditions ... 2003. Comparison of the Total Phenolic and Ascorbic P.:::l Content of Freeze-Dried and Air-Dried Marionberry, Strawberry, and Corn Grown Using Conventional, Organi...

Ngày tải lên: 05/05/2014, 08:39