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Sardool S. Ghumman Rajender Singh N. P. S. Sidhu H. S. Sahota 《Journal of Radioanalytical and Nuclear Chemistry》1987,118(6):433-436
The perturbed angular correlation /P.A.C./ technique is employed to investigate the structures of barium ferrite and barium hexaferrite using radioactive133Ba /10.7 Y/ as a probe. The quadrupole interaction frequencies /WQ'S/ are found to be 9.68 and 12.02 Mrad sec–1 for barium ferrite and barium hexaferrite, respectively, showing a drift from usual cubic structure. 相似文献
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M. Biondic S. Giacopello R. Erra Bassells M. V. Encinas E. A. Lissi 《Journal of polymer science. Part A, Polymer chemistry》1996,34(10):1941-1944
To establish their potential as source of biradicals to initiate free-radical polymerization, 2-methyl- and 2,2,12-trimethylcyclododecanones were photolyzed in the presence of styrene. The initiation efficiency of both ketones is low—0.03. The molecular weight of the obtained polymer is ca. 25% higher than that obtained employing photoinitiators that produce monoradicals. This difference is explained in terms of a mixed polymerization mechanism comprising mono- and biradicals. © 1996 John Wiley & Sons, Inc. 相似文献
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Dr. Eric Hutchinson Dr. Murray J. Sibley Colin Abram 《Colloid and polymer science》1968,225(2):167-175
Summary Studies have been made of the interaction of a number of ionic surfactants with human red blood cells in order to measure the rate at which the surfactant brings about rupture of the red cells and the enthalpy change associated with rupture. The results are consistent with the hypothesis that the primary function of the surfactant is to penetrate a lipid monolayer and bring about its collapse. Enthalpy changes associated with hemolysis are estimated to lie in the region –2×104 to –5×104 Joules per mole of surfactant.
With 9 figures and 5 tables 相似文献
Zusammenfassung Es wurde die Wechselwirkung einer Anzahl von ionischen oberflächenaktiven Agentien mit menschlichen roten Blutkörperchen untersucht, um die Geschwindigkeit zu messen, mit welcher die oberflächenaktive Substanz die roten Zellen zerreißt. Die Ergebnisse stimmen mit der Hypothese überein, daß die oberflächenaktive Substanz primär eine monomolekulare Lipidschicht durchdringt und sie dadurch zum Zerfall bringt. Die mit der Hämolyse Hand in Hand gehenden Enthalpieänderungen liegen schätzungsweise bei –2×104 bis –5×104 Joule pro Mol oberflächenaktiver Substanz.
With 9 figures and 5 tables 相似文献
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