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Dilatação térmica linear de refratários silico-aluminosos nacionais
(1955) [Artigo de periódico]No presente trabalho é determinada a dilatação térmica linear reversivel de alguns refratários sílico-aluminosos nacionais, notadamente dos produzidos pelas indústrias de refratários do Estado do Rio Grande do Sul (Brasil), ... -
Problemas de pesquisa na indústria nacional de produtos estruturais de argila
(1957) [Artigo de periódico] -
Ensaio de uma teoria eclética da ação
(1958) [Artigo de periódico] -
Investigation of medium and heavy nuclei by quasi-free-proton scattering
(1960) [Artigo de periódico] -
A importância do tono vasomotor na regulação da taquicardia compensadora
(1961) [Artigo de periódico]Com o objetivo de investigar qual o mecanismo mais importante ria regulação da taquicardia compensadora provocada em cães por meio da administração de diferentes doses de acetilcolina, foram utilizados animais com ligadura ... -
Quantum electrodynamics with zero bare ferminon mass
(1964) [Artigo de periódico] -
Análise do complexo de ativação ventricular no pós-operatório da comunicação interatrial
(1966) [Artigo de periódico]Estudamos o comportamento do eletrocardiograma - complexo de ativação ventricular - em 60 casos comprovados de CIA do tipo ostium secundum. Analisamos as características morfológicas, de tempo, de magnitude e orientação ... -
Spontaneously broken symmetries and current conservation
(1966) [Artigo de periódico] -
Studies of quadrupole interactions by means of angular correlations
(1967) [Artigo de periódico]Measurements of the nuclear quadrupole interaction have been made for the first 5/2+ excited state of Ta181 in severa! compounds of Hf, and for the first 5/2+ excited state of Cdll1 in In metal by time-differential and by ... -
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Evidence for sinusoidal phase modulation in small self-trapped filaments
(1968) [Artigo de periódico]Evidence is presented indicating that, in some cases at least, a sinusoidal phase modulation is responsible for the spectral broadening Observed in trapped filaments of laser (and Raman) light. This kind of modulation has ... -
Charge commutator for any momentum
(1969) [Artigo de periódico]The nucleon matrix elements of the charge commutation relations are considered for arbitrary momentum. The resulting expression is exact. The high-momentum limit reduces to the Alder-Weisberger sum rule. For zero momentum ... -
Mossbauer effect in frozen solutions of nitroprusside
(1969) [Artigo de periódico] -
Interpretation of nuclear quadrupole constants in compounds of 181Ta
(1969) [Artigo de periódico] -
Measurement of the g-factor of the 3/sup -/ octopole vibrational state in /sup 208/pb
(1969) [Artigo de periódico]The nuclear g-factor of the collective 3- level at 2615 keV in 208pb has been measured by the perturbed angular correlation technique. The result of g(3-) = 0.58 ± 0.14 confirms the strongly collective character of the state. -
Internal magnetic fields at Hg and TI in ferromagnets
(1969) [Artigo de periódico]With the perturbed angular correlation method the hyperfine magnetic fields acting at 198Hg nuclei embedded in Fe, Co and Ni lattices are found to be -440 J: 105 kG, -370 :~ 78 kG and -86 J: 22 kG, respectively. The measured ... -
Influence of simultaneous static and time dependent quadrupole interactions on gamma-gamma angular correlations
(1969) [Artigo de periódico]We derive the forro of the perturbation factors for the angular correlation of two successive Y rays when the intermediate state is under the influence of an axially symmetric static electric field gradient plus a small ... -
Aminoácido do Eupatorium serratum sprengel
(1970) [Artigo de periódico]Our investigation have demonstred that amnoacids such as proline, L - glutamine, L - arginine, glutamic acid, isoleucine and others no identified aminoacids are present in a total plant aquous extract of Eupatorium serraton ... -
Renormalization and gauge invariance in quantum electrodynamics
(1970) [Artigo de periódico]The connection between the field theory and the perturbation expansion of quantum electrodynamics is studied. As a starting point the usual Lagrangian is taken but with bare electron mass and the renormalization constant ... -
Isomer shift and electronegativy in compounds of tin and group -VI elements
(1970) [Artigo de periódico]Using the Mössbauer effect in 119Sn we have measured the isomer shift in compounds of divalent and tetravalent tin with elements of Group VI. The isomer shift is linearly dependent on the values of electronegativity in ...