The spectra of the ferric form of most heme proteins [metmyoglobin, methemoglobin, horse radish peroxidase (EC 1.11.1.7), and ferricytochrome c at pH 1.5] are converted from high-spin (open crevice) structure to low-spin (closed crevice) form under pressure. Pressures up to 8000 kg/cm2 (780 MPa) have no effect on the spectra of high-spin ferro- and ferricytochrome c, which have a closed crevice...

The success of spin trapping techniques in vivo hinges on whether spin traps with high trapping efficiency and biocompatibility can be developed. Currently, two iron chelates based on the dithiocarbamate structure (hydrophilic ferro-di(N-methyl-D-glucamine-dithiocarbamate, or Fe(II)-MGD, and lipophilic ferro-di(diethyldithiocarbamate), or Fe(II)-DETC), are used for spin trapping of nitric oxide...

Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) is an organic mixed ion-electron conducting polymer. The PEDOT phase transports holes and is redox-active, whereas the PSS phase transports ions. When PEDOT is redox-switched between its semiconducting and conducting state, the electronic and optical properties of its bulk are controlled. Therefore, it is appealing to use this t...

In this work, the effect of a variable spatial magnetic field on ferro-nanofluid flow and heat transfer in a double-sided lid-driven enclosure with a sinusoidal hot wall is investigated. The working fluid is a mixture of iron oxide (Fe3O4) nanoparticles and water and is referred to as a ferro-nanofluid. The control volume-based finite element method (CVFEM) is used to solve the governing equati...

1 C. Spearman, Abilities of Man, Their Nature and Measurement, Macmillan, 1927; see Appendix, p. viii. 2 H. T. H. Piaggio, Brit. J. Psychol., 24, 88-105 (1933) states the matter clearly (p. 104) when in discussing Kelley's tests he says: "However, in deciding what tests to retain we make the tetrad relations the criterion, and not preconceived notions about dissimilarity of tests; indeed in the...

The stability of ferr* and antiferrornagnetism in 4f-systems with valence fluctuations between magnetic and nonmagnetic configurations is investigated in the framework of an extended s-f model. Intensifying the electronic transitions by varying the 5 f hybridization or the 4f-level position tends to quench the local magnetic 4f-moments and, competingly, the enhance the coupling between them. Th...

Mathematical modelling of salt-water intrusion processes in three aquifers on the southern coast of Spain (Río Verde, Río Vélez and Castell de Ferro) reveals that, although all three systems are subject to the same climate and seasonal over-exploitation, geological and human factors have very different effects on the dynamics of contamination. In the Río Verde aquifer, the most important influe...

The selective detection and quantification of macromolecular targets is a fundamental biological mechanism in nature. Molecularly imprinted polymers (MIPs) have been identified as one of the most promising synthetic alternatives to bioreceptors. However, expanding this methodology towards selective recognition of bulky templates such as proteins appears to be extremely challenging due to proble...