Richard L. Cohen

Monash University

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Mossbauer effect of¹⁵¹Eu in EuNi₅, EuMg₂and their hydrides

Journal of Physics F Metal Physics (1978)

F. W. Oliver K. W. West Richard L. Cohen K.H.J. Buschow

The Mossbauer effect of the 21.53 keV transition of 151Eu was utilised to study EuNi5, EuMg2 and their hydrides. Measurements of isomer shift and hyperfine field were made at various temperatures between 77K and 2.6K. The experimental data were used to interpret the hydrogen absorption mechanism acting in these intermetallics. In both cases results indicate that hydrogen absorption occurs primarily through the formation of europium hydride 'complexes'.

Europium

10.1088/0305-4608/8/4/021

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Citations (54)

Intrinsic cycling degradation in LaNi5 and annealing procedures for re-forming the material

Journal of the Less Common Metals (1983)

Richard L. Cohen K. W. West

Cycling

Temperature cycling

Degradation

10.1016/0022-5088(83)90380-6

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Citations (46)

Modified Biochemical Tests for Characterization of L-Phase Variants of Bacteria

Applied Microbiology (1968)

Richard L. Cohen Ruth G. Wittler John E. Faber

Biochemical capabilities of bacterial and L-phase organisms of 15 bacterial strains were examined by using a variety of modified routine diagnostic biochemical tests. The results demonstrated that 13 of the tests examined were suitable for use with L-phase variants, that L-phase variants and revertant bacterial phase organisms retained diagnostically significant capabilities of the respective bacterial or L-phase organisms from which they were derived, and that the 13 biochemical tests could be usefully employed to relate a given L-phase variant to a given bacterial phase organism, to distinguish L-phase variants of different species, and to aid in the identification of nonreverting L-phase variants.

Phase variation

10.1128/am.16.11.1655-1662.1968

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Citations (15)

An Overview of the “Project Future” Report “Child Psychiatry: A Plan for the Coming Decades“

Journal of the American Academy of Child Psychiatry (1984)

Norbert Enzer Irving Philips Richard L. Cohen

Biopsychosocial model

10.1016/s0002-7138(09)60348-4

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Citations (11)

Mössbauer Studies of Colloidal Catalyst Solutions Used in Metallization of Plastics

Advances in chemistry series (1981)

Richard L. Cohen

The electronics industry uses a colloidal catalyst containing tin and palladium to make printed wiring boards and flexible circuits. This chapter reviews an extensive series of reports in which the chemistry of formation and stabilization of the colloid, and its interactions with the surface being treated, were elucidated. These studies were carried out mainly by Mössbauer spectroscopy of the 119Sn, with additional information being gained from centrifugation and Rutherford backscattering analyses. Definition of the chemical processes occurring has allowed an improved procedure to be invented.

10.1021/ba-1981-0194.ch025

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Citations (1)

MÖSSBAUER STUDIES OF HYDROGEN-ABSORBING RARE-EARTH INTERMETALLICS

Le Journal de Physique Colloques (1980)

Richard L. Cohen

10.1051/jphyscol:19801124

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Citations (0)

ChemInform Abstract: SUBSTITUENTENEFFEKTE BEI DER REAKTIVITAET FREIER TRIARYLIMIDAZOLYLRADIKALE GEGENUEBER TRIS‐(2‐METHYL‐4‐DIAETHYLAMINOPHENYL)‐METHAN

Chemischer Informationsdienst Organische Chemie (1971)

Richard L. Cohen