Undiagnosed Phenylketonuria Can Exist Everywhere: Results From an International Survey

peer reviewedMany countries do not have a newborn screening (NBS) program, and immigrants from such countries are at risk for late diagnosis of phenylketonuria (PKU). In this international survey, 52 of 259 patients (20%) with late diagnosed PKU were immigrants, and 145 of the 259 (55%) were born before NBS or in a location without NBS. © 2021 The Author

SHAPE RESONANCES IN PHOTOIONIZATION: CORRELATION WITH STO-3G MO RESULTS

Shape resonances in nine linear molecules are investigated by multiple-scattering and molecular-orbital calculations. Each resonance correlates with a bound-state virtual orbital. It is shown that minimal-basis-set molecular-orbital calculations may be used to guess the number of resonances expected and to estimate their energies via regression analysis

EXPERIMENTAL AND THEORETICAL INVESTIGATION OF THE PHOTOIONIZATION OF ACETYLENE

Asymmetry parameters and vibrational intensity ratios for the 2Πu ionization of acetylene have been measured with different line sources (Ar II, Ne I, He I, Ne II, He II) Calculated photoionization cross sections and angular distributions are also reported for photon energies between 12 and 50 eV. In the low-energy region, experimental and theoretical results indicate the presence of processes other than direct ionization

EXPERIMENTAL AND THEORETICAL INVESTIGATION OF THE PHOTOIONIZATION OF HYDROGEN CYANIDE

Experimental HeI asymmetry parameters are reported for hydrogen cyanide. The HeI results do not allow conclusions to be made on the vibronic coupling between the two lowest ionic states. Multiple-scattering calculations predict that such conclusions may be possible at higher photon energies. Calculated photoionization cross sections are presented and compared with those for acetylene

SHAPE RESONANCES IN THE VALENCE-SHELL PHOTOIONIZATION OF CYANOGEN

Vibrationally-resolved photoelectron angular distributions for the first four valence-shell photoionizations of cyanogen have been measured with NeI, HeI and NeII line sources. Calculated photoionization cross sections and asymmetry parameters are reported for photon energies up to 50 eV. The experimental and theoretical results indicate the presence of several shape resonances