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Showing papers by "Autonomous University of Barcelona published in 1972"


Journal ArticleDOI
TL;DR: In this paper, a general study of angular momentum and parity conservation in the most frequent two body strong decays is made, in order to propose new tests for the determination of the spin of the decaying particle.

25 citations


Journal ArticleDOI
TL;DR: The pairing and stacking energies of nucleic acid bases have been computed by the perturbation formulas from reliable eigenvalues and wavefunctions involving all valence electrons for the bases and for the base pairs.

21 citations


Journal ArticleDOI
TL;DR: In the present study, a synthetic organic free radical is chosen which is known to react mainly with SH groups of histones, and which has been found to have particular conformations capable of proteinprotein interactions.

17 citations


Journal ArticleDOI
TL;DR: In this paper, a complete study of the relations between the three cross sections and the three sets of spin rotation parameters P, A, R for three reactions related by internal symmetry via two channels is presented.

14 citations


Journal ArticleDOI
TL;DR: In this paper, a set of seven spin rotation parameters, as a generalization of the parameters P, R, A of Wolfenstein, are defined, with the differential cross section, the whole phenomenological information on this type of reactions for each value of total energy, momentum transfer, and missing mass.

13 citations


Journal ArticleDOI
TL;DR: A new rapid microcytotoxicity test based on the use of ethidium bromide, which diffuses rapidly through the membrane of damaged cells and gives an intense red fluorescence with the nuclear DNA, which would open the way to the preparation of absorbed HLA sera as reagents.

13 citations


Journal ArticleDOI
TL;DR: In this article, the authors interpreted the experimental results as from the delocalized model of the transition state and the theory of perturbations, and discussed the concerted nature of photodimerization and permit the two conjugated systems to be added between carbon atoms 5 and 6 of both molecules.
Abstract: The experimental results are correctly interpreted as from the delocalized model of the transition state and the theory of perturbations. The surfaces of the energy of interaction between both molecules in function of different coordinates of reaction make it possible to discuss the concerted nature of photodimerization and permit the two conjugated systems to be added between carbon atoms 5 and 6 of both molecules.

2 citations


Journal ArticleDOI
TL;DR: In this paper, a procedure for photometric charge discrimination in nuclear emulsion is described, based on measurements taken at the end of the range of tracks on protons and α-particles of 150 MeV and 100 MeV respectively, a function of the form ∑ 0 R Op(Z, R) = (aR + b) Z χ has been determined.

1 citations