共查询到20条相似文献，搜索用时 525 毫秒
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F. EidenW. Löwe 《Tetrahedron》1972,28(12):3295-3297
Dehydration of the salicyloyl-isoxazole-oxime 7b yields the isoxazolyl-benzoxazole- and benzisoxazole derivatives 4 and 11, and not, as was assumed hitherto, the benzopyrano-oxadiazines 1 and 9. 相似文献
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F. E. Holmes 《Fresenius' Journal of Analytical Chemistry》1942,123(3-4):114
Ohne Zusammenfassung 相似文献
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Heinz Balli Thomas Eichenberger Bruno Hellrung Peter Scheibli 《Helvetica chimica acta》1985,68(5):1394-1400
Photoisomerization and Relaxation of Symmetrical Triazacarbocyanine Dyes in an Alcoholic Mixture at Low Temperature The partial photobleaching of a series of symmetrical triazacarbocyanine dyes with different heterocycles in EtOH/MeOH/i-PrOH at low temperature (110 to 250 K) was investigated by UV/VIS spectra. Kinetic data of the dark reaction of photobleached compounds are given. The effect of electron-donating or -accepting substituents, respectively, and of protonation of the photobleached compound on kinetic data and on UV/VIS spectra was studied. Products of photobleaching and mechanisms of the dark reaction are discussed. 相似文献
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Ohne Zusammenfassung
Comparing determination of elements in an ombrogenic and a minerogenic system相似文献
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A. G. Epprecht 《Colloid and polymer science》1956,145(2):116-118
Ohne ZusammenfassungReferat des Vortrages, gehalten auf der 5. Tagung der Deutschen Rheologischen Gesellschaft in Frankfurt a. M. vom 17.–18. 5. 1955.Epprecht-Rotations-Viskosimeter 相似文献
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H. Gnaser F. G. Rüdenauer W. Steiger G. Flentje W. O. Hofer U. Littmark J. Giber D. Marton P. Braun und H. Störi 《Fresenius' Journal of Analytical Chemistry》1984,319(6-7):786
Ohne Zusammenfassung
Comparison of SIMS and AES depth profile analyses of a Ni/Cr multilayer system相似文献