A Facile Method for Preparing Substituted 1-Aminoanthraquinones
作者:Henry C. Wormser、Manik S. Sardessai、Hanley N. Abramson
DOI:10.1080/00397919308011182
日期:1993.12
Abstract An efficient and simple preparation of α - substituted aminoanthraquinones using 2,2-dialkoxyethylamines is described.
摘要 描述了使用 2,2-二烷氧基乙胺有效且简单地制备 α - 取代的氨基蒽醌。
Accumulation in Dasuopu ice core in Qinghai-Tibet Plateau and solar activity
作者:Keqin Duan、Ninglian Wang、Yuefang Li、Weizheng Sun
DOI:10.1007/bf02884987
日期:2000.6
The time series of accumulation in recent 300 years correlated well with solar activity in Dasuopu ice core. Results of spectrum analysis on the accumulation time series of the Dasuopu ice core shows that there are some periods that coincide with the periods of solar activity. By comparing the long-time change trend of the accumulation in the Dasuopu ice core with various kinds of indexes of solar activity intensity, a negative correlation is found between the trend and solar activity.
DE605191
申请人:——
公开号:——
公开(公告)日:——
Dokunichin; Kurdjumowa, Sb. Statei Obshch. Khim., 1953, p. 1411,1417