论文部分内容阅读
[!--newstext--]
[!--title--]
【摘 要】
：
Two new b -dihydroagarofuran sesquiterpenes were isolated from Euonymus phellomana Loes.and their structures were established on the basis of spectral analysis.
【机 构】
：
National laboratory of Applied Organic Chemistry
【出 处】
：
中国化学快报（英文版）
【发表日期】
：
2004年期
其他文献
This paper gives the compactness criteria for a kind of generalized Hankel operators on Bergman spaces Lpa(B) defined by M.M.Peloso.
EDGEWORTH EXPANSION AND BOOTSTRAP APPROXIMATION FOR THE STUDENTIZED MLE FROM RANDOMLY CENSORED EXPON
In this paper,the author studies the asymptotic accuracies of the one-term Edgeworth expansions and the bootstrap approximation for the studentized MLE from ran
alopex算法是一种新的启发式与随机优化相结合的算法，通过对alopex算法的研究和大量的试验，对alopex算法的优化策略做了一定的改进，以提高该算法的收敛性和收敛速度．实验证明，这种
The Yang-Mills-Higgs field generalizes the Yang-Mills field. The authors establish the local existence and uniqueness of the weak solution to the heat flow for
A new triterpenoid saponin, together with a known saponin, was isolated from the flowers of Lonicera Japonica Thunb. Using chemical and spectroscopic methods, m
Two new compounds named decuroside Ⅵ(1) and decursidate (2) were isolated from the roots of Peucedanum decursivum - a traditional Chinese medicine. Their struc
This paper studies the value distribution of random analytic Dirichlet series f:(s) = ∞∑n=1 Zn(ω)e-sλn,where {Zn} is a sequence of independent random variab
在QCISD水平上基于相对论紧致有效势（RCEP:Relativistic Compact Effective Poten-tial)方法优化出的LaH2分子的基态为C2v(X2A1)构型，其∠HLaH=124.4°、平衡核间距Re=2.1945A
The retinal structure and visual acuity in Japanese flounder Paralichthys olivaceus at different stages of development were examined by light microscopy. The re
This paper deals with the existence and multiplicity of periodic solutions of Duffing equations x + g(x) ＝ p(t). The author proves an infinity of periodic soluti