We have studied the ligand-binding reactions of lamprey (Petromyzon marinus and Petromyzon fluviatitis) hemoglobin with O2 and CO in the pH range 9.0 to 5.6 by means of both rapid reaction and equilibrium techniques. All the data can be accurately described by a model in which it is assumed that there are two forms of hemoglobin, a high affinity monomer and a lower affinity dimer, and that the ...

The effect of carbon monoxide (CO) co-adsorption on the dissociation of water on the Ni(111) surface has been studied using density functional theory. The structures of the adsorbed water molecule and of the transition state are changed by the presence of the CO molecule. The water O-H bond that is closest to the CO is lengthened compared to the structure in the absence of the CO, and the break...

In single-column anion-exchange chromatography, the retention volume of some monovalent inorganic anions (Cl(-), Br(-), NO(3)(-), NCS(-) and NO(2)(-)) were observed as a function of the pH of a mobile phase at a fixed concentration of 2-phenylmalonic acid or 1,4-benzenediacetic acid used as an eluent. The experimental retention volume of such an anion was decreased with an increase in the pH of...

New phosphorous-containing salicylates and two allyl salicylates with pharmacological potential, derived from salicylic acid, have been synthesized. Their chemical structure has been established by spectral analyses (mass spectra and 1H-NMR). The salicylates presented low toxicity, also showing a remarkable antipyretic activity, greater than that of acetylsalicylic acid (aspirin). Partition coe...