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Publikováno v:
ChemInform. 28
A new method is described for the preparation of essentially monophase X-phase sialon, Si 12 Al 18 O 39 N 8 , by silicothermal reduction of mixtures of kaolinite, γ-Al 2 O 3 and elemental Si in purified nitrogen at 1450–1500 °C. Powder X-ray diff
Autor:
Francis D. Juma, Yumi Nishiyama, Simon G. Mathenge, Patrick B. Chalo Mutiso, Masataka Moriyasu, Atsushi Kato, Momoyo Ichimaru, Kinuko Iwasa
Publikováno v:
ChemInform. 38
From the secondary and tertiary alkaloidal fractions of the root and the bark of Xylopia parviflora (Annonaceae), the isoquinoline alkaloids, 10,11-dihydroxy-1,2-dimethoxynoraporphine and parvinine were isolated, along with 39 known alkaloids. Their
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