During bicarbonate titration, bicarbonate was found in urine only when the threshold was exceeded. Below this level, the urine was normally acid and therefore bicarbonate free. At a plasma ...

Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, P. R. China ...

Physical Measurement Laboratory, National Institute of Standards and Technology (NIST), Gaithersburg, Maryland 20899, United States ...

Titration offers another method to establish (indirectly ... charge distribution and do not consider the possibility of dynamic chemical equilibria between protonation and deprotonation of acids. Acid ...

In this study, we identify amino acids important for the cation selectivity of Tim23. Structure based mutants show that selectivity is provided by highly conserved, pore-lining amino acids. Mutations ...

Based on the evidence cited above and building upon a previous framework on fatigue (9), we propose that fatigue depends on the base levels of dopamine in the CNS. Neuroimaging studies in clinical ...

In this study, we present the mechanistic basis of a configuration-specific enzyme that selectively removes D-amino acids erroneously coupled to tRNAs. The crystal structure of dimeric ...