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中国科学院广州分院利用蚀变洋壳绿帘石脉约束海底热液循环过.程（图）
蚀变洋壳 绿帘石脉约束 海底热液循环 热力学
2023/3/20
海底热液循环可以改变海水和洋壳的化学组成，也会影响洋壳的增生和冷却过程，对于理解岩石圈-水圈的物质和能量循环具有重要意义。作为中-高温热液活动的产物，绿帘石对于沉积热力学环境变化尤为敏感，是探究岩石圈热液循环系统的极佳示踪对象。由于受到温度、水-岩比值等条件约束，洋壳中热液绿帘石脉通常会出现在较深位置（例如在ODP504B钻孔中，绿帘石脉出现在沉积物/基岩界面以下900米），取样难度极大，目前关于...
中国科学院广州分院利用蚀变洋壳绿帘石脉约束海底热液循环过程（图）
蚀变洋壳 绿帘石脉约束 海底热液循环
2023/3/20
海底热液循环可以改变海水和洋壳的化学组成，也会影响洋壳的增生和冷却过程，对于理解岩石圈-水圈的物质和能量循环具有重要意义。作为中-高温热液活动的产物，绿帘石对于沉积热力学环境变化尤为敏感，是探究岩石圈热液循环系统的极佳示踪对象。由于受到温度、水-岩比值等条件约束，洋壳中热液绿帘石脉通常会出现在较深位置（例如在ODP504B钻孔中，绿帘石脉出现在沉积物/基岩界面以下900米），取样难度极大，目前关于...
循环组合系统的结构性质
组合系统 结构能控制 结构固定模
2008/12/15
研究了循环组合系统的结构性质.结果表明,由于其结构的特殊性,循环组合系统的
结构能控性和结构固定模的存在性,可以通过其修正子系统的结构能控性和结构固定模的存
在性来得到.
有循环极大子群的素数幂阶群的作用是边传递的图(I)
2007/12/17
${\it \Gamma}$是一个有限的、单的、无向的且无孤立点的图,$G$是${\rm Aut}({\it \Gamma})$的一个子群. 如果$G$在${\it \Gamma}$的边集合上传递,则称${\it \Gamma}$是$G-$边传递图. 我们完全分类了当$G$为一个有循环的极大子群的素数幂阶群时的$G-$边传递图. 这扩展了Sander的结果. 本文仅给出其中的一种情况,即当$G$...
NON-EXISTENCE OF SINGULAR CYCLES IN AQUADRIC DIFFERENTIAL SYSTEM WITH FINE FOCUS OF ORDER THREE
Homodinic heteroclinic centre-focus cr
2007/12/17
The problem of existence or non-existence of singular cycles (or komoclinic loops and keteroclinic cydes as being termed in the modern literature of nonlinear dyndric systems) is one of the most impor...
Let G be a connected graph of order of n, and NC2(G) denote min{|N(u) ∪ N(v)| dist(u, v) = 2}, where dist(u, v) is the distance between u and v in G. A cycle C is called a dominating cycle if every co...
摘要 Let G be a connected graph of order n, and NC2(G) denote min{|N(u)\cup (v) |: dist(u,v) = 2}, where dist(u,v) is the distance between u and v in G. A cycle C in Gis called a dominatiny cycle, if V(...
A New Hierarchy of Lax and Liouville Integrable Evolution Equations Associated with an Isospectral Problem in the Loop Algebra Ã2
Isospectral problem loop algebra Lax integrable Liouville integrable Hamiltonian structure
2007/12/10
摘要 In this paper, an isospectral problem with five potentials is investigated in loop algebra $\tilde{A}_2$ such that a new hierarchy of evolution equations with five arbitrary functions is obtained...
STRONG CONSISTENCY OF THE PERIODIC SMOOTHING SPLINES
Nonparametric regression periodic smooth
2007/12/10
摘要 Consider the regression model Y_i=u(x_i)+ε_i,i=1,2,…,n, where u(x)∈W_(2,per)~2[0,1],x_i=(i-1)/n,{ε_i}_1^nare i.i.d, random variables. We use the periodic smoothing spline u_(λp)(x)to estimate u(x)....
ON THE EXISTENCE AND UNIQUENESS OF PERIODIC SOLUTIONS OF VOLTERRA INTEGRAL DIFFERENTIAL EQUATIONS
Periodic solutions Volterra integro-dif
2007/12/10
摘要 In this paper, we use the contraction principle and the Leray-Schauder principle to deal with the existence of periodic solutions of the Volterra integral differential equation. Some new existence ...
A graph G is called A-cordial if there is a vertex labelling f of G with elements from A...
A LOCALIZATION CONDITION FOR BIPANCYCLIC BIPARTITE GRAPHS
Localization condition connected balanc
2007/8/7
In this paper we prove the following: Let G be connected balanced bipartite graph of order 2n\geq 4. If G satisfies the localization condition |N_2(u)\N(v)| + 2 \leq d(u), for any u,v∈ V(G) and d(u, v...
FRACTIONAL ORDER EVOLUTION EQUATION INTERPOLATING BOTH HEAT AND WAVE EQUATION
Fractional evolution equation Mittag-Le
2007/8/7
In this paper we consider a class of fractional order evolution equations which interpolates the heat equation and wave equation. By Mittag-Lefflers functions[1] and functions transform the representa...
THE SPACE-TIME INTEGRALITY FOR SOLUTIONS OF SOME HIGHER EVOLUTION
Higher order evolution equation Cauchy
2007/8/7
In this paper we establish the space-time integrality for solutions of some higherorder evolution equations in Besov space, by devoted to the technology of determined indexand functional analysis.