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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
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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 热力学
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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
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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)
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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
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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...
LONG DOMINATING CYCLES IN A KIND OF 2-CONNECTED GRAPHS
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2007/12/17
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...
LONG DOMINATING CYCLES IN GRAPHS
Dominating cycle neighborhood union
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2007/12/10
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
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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
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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
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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 LOCALIZATION CONDITION FOR BIPANCYCLIC BIPARTITE GRAPHS
Localization condition connected balanc
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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...
ON k-CORDIALITY OF CYCLES,CROWNS AND WHEELS
ON k-CORDIALITY OF CYCLES CROWNS AND WHE
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2007/8/7
A graph G is called A-cordial if there is a vertex labelling f of G with elements from A...
THE SPACE-TIME INTEGRALITY FOR SOLUTIONS OF SOME HIGHER EVOLUTION
Higher order evolution equation Cauchy
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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.
FRACTIONAL ORDER EVOLUTION EQUATION INTERPOLATING BOTH HEAT AND WAVE EQUATION
Fractional evolution equation Mittag-Le
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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...