Showing papers by "University of Lisbon published in 1977"
TL;DR: A morphological resemblance was noted between the "liver disease of vineyard sprayers" and the hepatic lesions reported in workers exposed to inorganic arsenic and to vinyl chloride, and the identification of the inhaled foreign material within the liver lesions raises important etiological considerations.
74 citations
TL;DR: Most but not all carcinoids from the embryonal midgut were argentaffin, whereas most fore- and hindgut carcinoids were nonargent Affin, and the frequency of argyrophil cells exceeded that of argentAffin cells.
67 citations
TL;DR: species are being carried out [6-l 21 allowing a better understanding of their role in the above pathway, and the study, in vitro, of interactions between the components of the pathway.
41 citations
TL;DR: A NMR and magnetic susceptibility study of the oxidized and reduced states of three different oligomers (forms) of a [4Fe-4S] ferrodoxin protein from Desulphovibrio gigas, FdI,FdI', and FdII was carried out and shows a similarity of magnetic behaviour between F dI and bacterial ferredoxins and between Fd II and HiPIP from Chromatium sp.
29 citations
TL;DR: The tensor analysing power of the 27 Al(d, 3 He) 26 Mg reaction has been measured at E d = 12.4 MeV as mentioned in this paper, which provides information on the asymptotic Dstate to S-state ratio in the 3 He wave function.
15 citations
TL;DR: In this article, photolysis of bis-benzaldehyde (6) results in simultaneous formation of rings B and D of the rhoeadine skeleton and leads directly to (±)-cis-alpinigenine (1a).
Abstract: Photolysis of the bis-benzaldehyde (6) results in simultaneous formation of rings B and D of the rhoeadine skeleton and leads directly to (±)-cis-alpinigenine (1a).
11 citations
TL;DR: In this paper, an acidic protein that contains molybdenum, iron and labile sulphide has been isolated from Desulphovibrio gigas, a sulphate reducer.
Abstract: An acidic protein that contains molybdenum, iron and labile sulphide has been isolated from Desulphovibrio gigas , a sulphate reducer. The protein was purified by Chromatographic procedures over DEAE-cellulose, Sephadex and alumina. The molecular weight, determined by polyacrylamide gel electrophoresis, is about 120 000. The amino acid composition is typical of the (2Fe, 2S) ferredoxins with a high proportion of acidic residues and about two cysteine residues per iron atom. It has twenty atoms of iron and twenty atoms of labile sulphide. One atom of molybdenum per molecule was determined by thermal neutron activation analysis. Optical absorption spectra indicate that the iron-sulphur chromophores are of the (2Fe, 2S) type.
11 citations
TL;DR: The sensitivity to 5-Fluorocytosine and the virulence for mice was assessed for 16 human isolates of Aspergillus and strains of A. conicus proved to be the most virulent for mice and A. terreusstrains the less virulent.
Abstract: The sensitivity to 5-Fluorocytosine (5-FC) and the virulence for mice was assessed for 16 human isolates of Aspergillus: A. fumigatus 2, A. niger 7, A. flavus 4, A. terreus 2 and A. conicus (A. restrictus group) 1.
8 citations
TL;DR: In this paper, it was shown that the angular distributions of the polarization transfer coefficients contain new complementary information on the tensor part of the deuteron-nucleus interaction which cannot be obtained solely from tensor analyzing power measurements.
3 citations
1 citations
TL;DR: In this article, the relativistic equation of wave mechanics for the antiparticles within the frame of the theory of the fusion for particles with arbitrary values of spin was provided. But this method is not suitable for the case of fermions.
Abstract: In this paper we develop a general method providing the relativistic equation of wave mechanics for the antiparticles within the frame of the “theory of the fusion” for particles with arbitrary values of spin (de Broglie, 1954). Such a method will enable us to discuss some fundamental differences between bosons and fermions.