scholarly journals Test of a quark-diquark fragmentation mechanism in proton-proton interactions at 360 GeV/c

1986 ◽  
Vol 31 (3) ◽  
pp. 367-373 ◽  
Author(s):  
◽  
J. L. Bailly ◽  
A. Batunin ◽  
B. Buschbeck ◽  
C. Caso ◽  
...  
Keyword(s):  
Fragmentation Mechanism ◽  
Proton Proton

MEASUREMENT OF PARITY VIOLATION IN PROTON-PROTON SCATTERING AT 13.6 MeV

1990 ◽  
Vol 51 (C6) ◽  
pp. C6-519-C6-522
Author(s):  
P. D. EVERSHEIM ◽  
W. SCHMITT ◽  
F. HINTERBERGER ◽  
S. KUHN ◽  
R. GEBEL ◽  
...  
Keyword(s):  
Parity Violation ◽  
Proton Scattering ◽  
Proton Proton

Study of multiparticle proton-proton interactions from 100-GeV to 400-GeV with a 30 inch bubble chamber - optical spark chamber hybrid system

1971 ◽  
Author(s):  
R.G> Glasser ◽  
B. Kehoe ◽  
G. McLellan ◽  
W. Risk ◽  
G.A. Snow ◽  
...  
Keyword(s):  
Hybrid System ◽  
Bubble Chamber ◽  
Proton Proton

21,22-Disubstituted 18α,19βH-Ursane Derivatives with Oxabicyclooctane System in Ring E

1993 ◽  
Vol 58 (1) ◽  
pp. 173-190 ◽  
Author(s):  
Eva Klinotová ◽  
Jiří Klinot ◽  
Václav Křeček ◽  
Miloš Buděšínský ◽  
Bohumil Máca
Keyword(s):  
Spectral Data ◽  
Spin Systems ◽  
Coupling Constants ◽  
Complete Analysis ◽  
Nmr Spectrum ◽  
Proton Proton ◽  
H Nmr ◽  
Proton Coupling ◽  
C Nmr

Reaction of 3β-acetoxy-21,22-dioxo-18α,19βH-ursan-28,20β-olide (IIIa) and 20β,28-epoxy-21,22-dioxo-19α,19βH-ursan-3β-yl acetate (IIIb) with diazomethane afforded derivatives XII-XIV with spiroepoxide group in position 21 or 22, which were further converted into hydroxy derivatives XV and XVII. Ethylene ketals VIII-X were also prepared. In connection with the determination of position and configuration of the functional groups at C(21) and C(22), the 1H and 13C NMR spectral data of the prepared compounds are discussed. Complete analysis of two four-spin systems in the 1H NMR spectrum of bisethylenedioxy derivative Xb led to the proton-proton coupling constants from which the structure with two 1,4-dioxane rings condensed with ring E, and their conformation, was derived.

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