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  • 1969  (53)
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  • 1969  (53)
  • 1
    Language: English
    In: J. Amer. Chem. Soc., 91: 2229-36(Apr. 23, 1969), 01 January 1969
    Keywords: N20210 -Chemistry-Inorganic, Organic, & Physical Chemistry-Chemical Properties ; Aluminum Chlorides ; Chemical Reactions ; Complexes ; High Temperature ; Neodymium Chlorides ; Photometry ; Reaction Kinetics ; Spectrophotometry ; Spectroscopy ; Vapors ; Neodymium Chlorides/Vaporization in Presence of Gaseous Aluminum Chloride, Spectrophotometric Study of ; Aluminum Chlorides/ Reactions of Gaseous, With Neodymium Chloride, Spectrophotometric Study of
    ISSN: 00027863
    E-ISSN: 15205126
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  • 2
    Language: English
    In: The Journal of Chemical Physics, 01 July 1969, Vol.51(1), pp.224-232
    Description: The electronic absorption spectra of UCl 4 and UBr 4 molecules isolated in nitrogen matrices cooled to liquid‐helium temperatures have been observed and measured in the range 400–50 000 cm −1 . The more than 30 narrow absorption bands, found in the 4000–24 000‐cm −1 region for each of the two molecules, have been assigned to pure electronic transitions from the 3 H 4 (Γ 5 ) ground state to excited states of the f 2 configuration. Energy‐level calculations have been performed by simultaneously diagonalizing the electrostatic, the spin–orbit coupling, and the (tetrahedral) crystal‐field interactions. The crystal‐field parameters of fourth and sixth degree, designated as A 〈r 4 〉 and B 〈r 6 〉 , were found to be − 593 and − 22 cm −1 for UCl 4 and − 490 and − 15 cm −1 for UBr 4 . These values of the parameters were obtained by a least‐squares fit of observed‐to‐calculated energy levels allowing A 〈r 4 〉 and B 〈r 6 〉 to vary while maintaining the values of F 2 , F 4 , F 6 , and ζ 5f at 191, 34, 4, and 1796 cm −1 , respectively. The magnitudes of A 〈r 4 〉 and B 〈r 6 〉 calculated on the basis of a point‐charge model including induced dipole contributions were found to be − 345 and 26 cm −1 for UCl 4 and − 309 and 22 cm −1 for UBr 4 .
    Keywords: N20230 -Chemistry-Inorganic, Organic, & Physical Chemistry-Physical Chemistry ; Lattices ; Low Temperature ; Nitrogen ; Spectra ; Uranium Bromides ; Uranium Chlorides ; Uranium Chlorides Ucl$Sub 4$/Spectra of, Isolated in Nitrogen Matrices Near 4$Sup 0$K, Electronic Absorption ; Uranium Bromides Ubr$Sub 4$/Spectra of, Isolated in Nitrogen Matrices Near 4$Sup 0$K, Electronic Absorption;
    ISSN: 0021-9606
    E-ISSN: 1089-7690
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  • 3
    Language: English
    In: Psychological Reports, February 1969, Vol.24(1), pp.207-214
    Description: This study was an attempt to replicate a previous finding that lower- and middle-class children of the same MA differ in their performance on a partially reinforced three-choice learning task. It was also an attempt to assess the role that skill and chance orientations play in determining this differential performance of social-class groups. The most significant finding of this study was that skill-oriented Ss showed less maximizing (correct responses) and more left, middle, right patterning of their responses than chance-oriented Ss. No main effect of social class was found but an interaction effect did occur that reflected significantly more left, middle, right patterning of responses by middle-class skill-oriented Ss than any other group.
    Keywords: Psychology
    ISSN: 0033-2941
    E-ISSN: 1558-691X
    Source: SAGE HSS (Sage Publications)
    Source: Sage Journals (Sage Publications)
    Source: SAGE Psychology (Sage Publications)
    Source: SAGE Journals (Sage Publications)
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  • 4
    Language: English
    In: The Journal of pharmacology and experimental therapeutics, November 1969, Vol.170(1), pp.84-90
    Keywords: Heart -- Drug Effects ; Muscle Contraction -- Drug Effects ; Phenytoin -- Pharmacology
    ISSN: 0022-3565
    Source: MEDLINE/PubMed (U.S. National Library of Medicine)
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  • 5
    Language: English
    In: Inorg. Chem. 8: 2625-33(Dec 1969), 01 January 1969
    Keywords: N20210 -Chemistry-Inorganic, Organic, & Physical Chemistry-Chemical Properties ; Aluminum Chlorides ; Chemical Reactions ; Gases ; Photometry ; Spectroscopy ; Uranium Chlorides ; Volatility ; Uranium Chlorides Ucl$Sub 5$/Reactions With Aluminum Chloride, Spectrophotometric Studies on ; Aluminum Chlorides/Reactions With Uranium Pentachloride, Spectrophotometric Studies on ; Uranium Chlorides Ucl$Sub 5$/Properties of Gaseous
    ISSN: 00201669
    E-ISSN: 1520510X
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  • 6
    In: Australian Journal of Chemistry, 1969, Vol.22(10), p.2137-2143
    Description: Conventional chemical analyses for tryptophan, thiol, and disulphide give erroneous results when applied to wool that has been treated with thiourea and form-aldehyde. This work presents data on such analyses and discusses the origins of the interference.
    Keywords: 〈keywords/〉
    ISSN: 0004-9425
    E-ISSN: 14450038
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  • 7
    Language: English
    In: Psychoanalytic review, 1969, Vol.56(2), pp.265-70
    Keywords: Personality Development ; Psychoanalytic Theory ; Self Concept
    ISSN: 0033-2836
    E-ISSN: 19433301
    Source: MEDLINE/PubMed (U.S. National Library of Medicine)
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  • 8
    Language: Undetermined
    In: Soviet studies : a quarterly review of the social and economic institutions of the USSR, 1969, Vol.20(4), pp. 499-510
    Keywords: History & Archaeology;
    ISSN: 00385859
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  • 9
    Language: English
    In: Soviet Studies, 01 April 1969, Vol.20(4), pp.499-510
    Keywords: History & Archaeology
    ISSN: 0038-5859
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  • 10
    Language: English
    In: Clinical chemistry, March 1969, Vol.15(3), pp.183-9
    Description: A simple method for determination of urinary δ-aminolevulinic acid is described. Its advantage over procedures now in use is in the utilization of a single ion-exchange column instead of two ion-exchange columns, with resulting saving of time, labor, and material. The method is accurate and useful in screening for lead poisoning.
    Keywords: Amino Acids -- Urine ; Lead Poisoning -- Epidemiology ; Levulinic Acids -- Urine
    ISSN: 0009-9147
    E-ISSN: 15308561
    Source: MEDLINE/PubMed (U.S. National Library of Medicine)
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