Volatile oil was isolated from the seed of Treculia africana (Moraceae) by solvent extraction and the chemical constituents were identified by means of GC and GC-MS. A total of twelve (12) components were characterize...Volatile oil was isolated from the seed of Treculia africana (Moraceae) by solvent extraction and the chemical constituents were identified by means of GC and GC-MS. A total of twelve (12) components were characterized in the volatile oil. Constituents found inherent were methane;2H-pyran-2-one, 6-[2-E-(3-107491000159-82-745nyl)ethenyl]-4-methoxy-;S-indacen-1(2H)-one, 3,5,6,7-tetrahydro-3,3,4,5,5,8-hexamethyl;7H-Dinaphtho[2,3-b:2.3’-h]carbazole;1,2-Bis[1-(2-hydroxye- thyl)-3,6-diazahomoadamantanty dene-9]hydrazine;3-Nor-3,7-secodichotine,2,7-didehydro-2-deoxy-14-hydroxy-11-methoxy 25-oxo-, (14.alpha.)-;tirucallol;beta-sitosterol;6-Acetyl-3-chloro-2,4-decanobenzoquinoline;Adenosine, N-(3-methyl-3-butenyl)-2’,3’,5’-tris-O-(trime-thylsilyl);Zirconium,dichloro-[dimethylbis-methyl-3H-benz[e]indenyl)silane];Chromone, 7-(3-chloropropoxy)-3-phenyl.展开更多
The Middle East and African oil have now accounted for 70%of China’s total oil imports and will have to be China’s major sources of crude oil imports in the future,which means that Beijing will continue to emphasize...The Middle East and African oil have now accounted for 70%of China’s total oil imports and will have to be China’s major sources of crude oil imports in the future,which means that Beijing will continue to emphasize its energy requirement activities and to forge closer energy cooperation with both regions.China’s energy activities in the Middle East and Africa have similar trade and investment patterns and also similar risks,the“Oil of Politics”such as the Iranian nuclear crisis and the Sudan/Darfur crisis will be the biggest challenges that Beijing faces in the Middle East and Africa.China’s energy activities in the Middle East are somewhat restrained and moderate,given its limited political influence and the instable geopolitical situations in the region.However,China’s energy requirement activities in Africa by means of energy diplomacy,technological and economic assistance,foreign aid and loans and debt cancellation,have and will continue to expand Beijing’s presence and influence in the region,having different geopolitical implications for Beijing,Africa and the West.展开更多
文摘Volatile oil was isolated from the seed of Treculia africana (Moraceae) by solvent extraction and the chemical constituents were identified by means of GC and GC-MS. A total of twelve (12) components were characterized in the volatile oil. Constituents found inherent were methane;2H-pyran-2-one, 6-[2-E-(3-107491000159-82-745nyl)ethenyl]-4-methoxy-;S-indacen-1(2H)-one, 3,5,6,7-tetrahydro-3,3,4,5,5,8-hexamethyl;7H-Dinaphtho[2,3-b:2.3’-h]carbazole;1,2-Bis[1-(2-hydroxye- thyl)-3,6-diazahomoadamantanty dene-9]hydrazine;3-Nor-3,7-secodichotine,2,7-didehydro-2-deoxy-14-hydroxy-11-methoxy 25-oxo-, (14.alpha.)-;tirucallol;beta-sitosterol;6-Acetyl-3-chloro-2,4-decanobenzoquinoline;Adenosine, N-(3-methyl-3-butenyl)-2’,3’,5’-tris-O-(trime-thylsilyl);Zirconium,dichloro-[dimethylbis-methyl-3H-benz[e]indenyl)silane];Chromone, 7-(3-chloropropoxy)-3-phenyl.
文摘The Middle East and African oil have now accounted for 70%of China’s total oil imports and will have to be China’s major sources of crude oil imports in the future,which means that Beijing will continue to emphasize its energy requirement activities and to forge closer energy cooperation with both regions.China’s energy activities in the Middle East and Africa have similar trade and investment patterns and also similar risks,the“Oil of Politics”such as the Iranian nuclear crisis and the Sudan/Darfur crisis will be the biggest challenges that Beijing faces in the Middle East and Africa.China’s energy activities in the Middle East are somewhat restrained and moderate,given its limited political influence and the instable geopolitical situations in the region.However,China’s energy requirement activities in Africa by means of energy diplomacy,technological and economic assistance,foreign aid and loans and debt cancellation,have and will continue to expand Beijing’s presence and influence in the region,having different geopolitical implications for Beijing,Africa and the West.
