Die Wasserstoffentwicklung beim Arsennachweis im Marsh'schen Apparat

Ohne Zusammenfassung     

A microscopic description of inelastic 12C scattering from 208Pb

Heavy-ion inelastic scattering is described microscopically by using an effective nucleon-nucleon interaction and RPA hole-particle wave functions. The relative cross sections for different multipoles can be sensitive to the range of the interaction. The strength is determined by fitting elastic scattering. The model is used to analyze 98 MeV ¹²C ions exciting ²⁰⁸Pb. The range required is shorter than that for the bare interaction between nucleons. Collective model fits are also presented for comparison.     

The cycloadducts of hexafluoroacetone and -thioacetone with diphenylketene

Hexafluoroacetone reacted with diphenylketene in the presence of potassium fluoride to give a 1:1 cycloadduct of β-lactone structure. On the other hand, hexafluorothioacetone, liberated from 2,2,4,4-tetrakis(trifluoromethyl)-1,3-dithietane by potassium fluoride, reacted with diphenylketene to give a “reverse” cycloadduct, a 3-thietanone derivative. Several reactions ofthe above product, including a reductive desulfuration of the 3-thietanone derivative were carried out.     

Spectrum of H218O in the 2900 to 3400 cm−1 region

Measurements of line center positions of H₂¹⁸O in the 2900 to 3400 cm^?1 region have been made at high resolution. This region contains absorptions of the (020) band and P-branch absorptions of the (100) and (001) bands of H₂¹⁸O. Values of the energy levels of the (020) state were determined in which ground state energy levels derived by Fraley, Rao, and Jones [J. Mol. Spectrosc.29, 312 (1969)] and Williamson, Rao, and Jones [J. Mol. Spectrosc.40, 372 (1971)] were used in the analysis. A new set of ground state levels was obtained by an iterative procedure.     

Immunchemische Bestimmung der Human-Pankreas-Lipase

Ohne Zusammenfassung

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Immunochemical determination of human pancreatic lipase

     

Line assignments and intensities of the ν2 + ν3 − ν2 band of 12CH4

As part of a comprehensive effort to compile line parameters of methane from 2400 to 3200 cm^?1, the P and R branches of the ν₂ + ν₃ ? ν₂ band of CH₄ at 3010 cm^?1 were assigned through upper state J = 9. The process utilized the analysis of ν₂ + ν₃ at 4544 cm^?1 by J. C. Hilico, J. Degni, J. P. Champion, and G. Guelachvili (J. Mol. Spectrosc.81, 277–302 (1980)) and the ν₂ levels derived from the infrared spectrum by Margolis (in preparation) to predict the positions of the hot band. Experimentally determined lower-state energies were used to confirm assignments, and line intensities of the 300 transitions assigned are observed on the order of 10^?3 cm^?2 atm^?1 or less.