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1 | (14) |
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13 | (2) |
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2 Large-Scale Passive Scalar Transport |
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15 | (10) |
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2.1 The Linear Stability Problem |
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15 | (3) |
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2.1.1 The Governing Equations |
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16 | (1) |
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2.1.2 Asymptotic Expansion of a Large-Scale Stability Mode |
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17 | (1) |
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2.2 The Kernel of the Passive Scalar Transport Operator and Solvability of Auxiliary Problems |
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18 | (2) |
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2.2.1 Stability of Passive Scalar Admixture Transport |
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19 | (1) |
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2.2.2 The Hierarchy of Equations for a Large-Scale Mode |
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19 | (1) |
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2.2.3 Solvability of the Order ε0 Equation |
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20 | (1) |
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2.3 Perturbation of the Neutral Mode |
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20 | (3) |
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2.3.1 Solution of the Order ε0 and ε1 Equations |
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21 | (1) |
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21 | (1) |
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2.3.3 Enhancement of Molecular Diffusion |
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22 | (1) |
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23 | (2) |
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25 | (36) |
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3.1 Kinematic Magnetic Dynamos: The Statement of the Problem |
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26 | (2) |
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3.1.1 The Eigenvalue Problem for the Magnetic Induction Operator |
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26 | (1) |
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3.1.2 Asymptotic Expansion of Large-Scale Magnetic Modes |
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27 | (1) |
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3.1.3 The Hierarchy of Equations for the Large-Scale Modes |
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27 | (1) |
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3.2 The Kernel of the Magnetic Induction Operator and Solvability of Auxiliary Problems |
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28 | (1) |
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29 | (6) |
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3.3.1 Solution of the Order ε0 Equations |
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30 | (3) |
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3.3.2 The Solvability Condition for the Order ε1 Equations |
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33 | (2) |
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3.4 Magnetic Eddy Diffusion in Steady Parity-Invariant Flows |
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35 | (3) |
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3.4.1 Solution of the Order ε1 Equations in the Absence of α-Effect |
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35 | (1) |
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3.4.2 The Solvability Condition for the Order ε2 Equations: The Operator of Magnetic Eddy Diffusion |
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36 | (2) |
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3.5 Complete Asymptotic Expansion of Large-Scale Magnetic Modes |
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38 | (3) |
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3.6 How Rare is Negative Magnetic Eddy Diffusivity? |
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41 | (5) |
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3.7 Strongly Negative Magnetic Eddy Diffusivity |
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46 | (5) |
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3.8 Perturbation of an Oscillatory Short-Scale Magnetic Mode |
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51 | (5) |
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3.8.1 Solvability Condition for Auxiliary Problems |
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52 | (1) |
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3.8.2 Order ε1 Equation: The α-Effect |
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53 | (1) |
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3.8.3 Order ε1 Equations in the Absence of the α-Effect |
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54 | (1) |
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3.8.4 Order ε2 equations in the Absence of α-Effect: Eddy Diffusion Revisited |
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55 | (1) |
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3.9 Magnetic Field Generation with Moderate Scale Separation |
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56 | (3) |
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59 | (2) |
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4 Time-Periodic Large-Scale Magnetic Dynamos |
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61 | (32) |
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4.1 The Floquet Problem for Large-Scale Magnetic Modes |
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62 | (5) |
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4.1.1 Statement of the Problem |
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62 | (1) |
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4.1.2 Asymptotic Expansion of Large-Scale Magnetic Modes |
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63 | (1) |
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4.1.3 Solvability of Auxiliary Problems |
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64 | (3) |
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4.1.4 Solution of the Floquet Problem for a Generic Time-Periodic Parity-Invariant Flow |
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67 | (1) |
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4.2 Magnetic Eddy Diffusion in Time-Periodic Parity-Invariant Flows of the Simple Structure |
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67 | (7) |
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4.2.1 The Hierarchy of Equations for Flows of the Simple Structure |
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67 | (2) |
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4.2.2 Solution of Order ε0 Equations |
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69 | (2) |
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4.2.3 Solution of Order ε1 Equations |
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71 | (1) |
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4.2.4 The Solvability Condition for Order ε2 Equations: The Operator of Magnetic Eddy Diffusion |
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72 | (1) |
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4.2.5 Solution of Order ε2 Equations |
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73 | (1) |
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4.3 Complete Asymptotic Expansion of Large-Scale Modes for Flows of the Simple Structure |
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74 | (3) |
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4.4 Computation of the Tensor of Magnetic Eddy Diffusion |
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77 | (4) |
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4.5 Is Periodic Time Dependence of Flows Favourable for Negative Magnetic Eddy Diffusivity? |
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81 | (4) |
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4.6 The Limit of High Frequencies for Flows of the Simple Structure |
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85 | (5) |
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90 | (3) |
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5 Convective Plan Form Dynamos in a Layer |
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93 | (22) |
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5.1 Statement of the Problem |
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94 | (5) |
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5.1.1 Boundary Conditions |
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94 | (1) |
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5.1.2 Neutral Magnetic Modes |
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95 | (1) |
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5.1.3 The Symmetry About a Vertical Axis |
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95 | (1) |
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5.1.4 Asymptotic Expansion of Large-Scale Magnetic Modes and the Hierarchy of Equations for Large-Scale Magnetic Modes |
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96 | (1) |
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5.1.5 Solvability of Auxiliary Problems |
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97 | (2) |
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5.2 Magnetic Eddy Diffusion in Flows, Symmetric About a Vertical Axis |
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99 | (4) |
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5.2.1 Solution of Order ε0 Equations |
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99 | (1) |
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5.2.2 The Solvability Condition for Order ε1 Equations: Insignificance of the α-Effect |
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100 | (1) |
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5.2.3 Solution of Order ε1 Equations |
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101 | (1) |
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5.2.4 The Solvability Condition for Order ε2 Equations: The Operator of Magnetic Eddy Diffusion |
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102 | (1) |
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5.3 Complete Asymptotic Expansion of Large-Scale Magnetic Modes |
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103 | (2) |
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5.4 Enhancement of Molecular Diffusion in Plane-Parallel Flows in a Layer |
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105 | (1) |
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5.5 Convective Plan Forms in a Layer of a Non-rotating Fluid |
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106 | (3) |
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5.5.1 Analytic Expressions |
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106 | (1) |
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5.5.2 Additional Symmetries |
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107 | (1) |
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5.5.3 Magnetic Eddy Diffusion Operator for Convective Plan Forms in a Layer |
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108 | (1) |
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5.6 Numerical Investigation of Magnetic Eddy Diffusion |
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109 | (4) |
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113 | (2) |
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6 Linear Stability of Steady MHD States to Large-Scale Perturbations |
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115 | (20) |
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6.1 Statement of the Linear Stability Problem |
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116 | (2) |
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6.1.1 The Governing Equations |
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116 | (1) |
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6.1.2 Asymptotic Expansion of Large-Scale MHD Stability Modes |
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117 | (1) |
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6.1.3 The Hierarchy of Equations for the Large-Scale Modes |
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117 | (1) |
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6.2 Solvability of Auxiliary Problems |
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118 | (2) |
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6.3 The Combined MHD α-Effect |
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120 | (3) |
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6.3.1 Solution of Order ε0 Equations |
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121 | (1) |
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6.3.2 The Solvability Condition for Order ε1 Equations: The Operator of the Combined MHD α-Effect |
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122 | (1) |
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6.4 Complete Expansion of Large-Scale MHD Modes in the Presence of the α-Effect |
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123 | (4) |
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6.4.1 Solution of Order ε1 Equations |
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123 | (1) |
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6.4.2 Solution of Order εn, n > 1 Equations |
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124 | (3) |
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6.5 MHD Eddy Diffusion in Steady Parity-Invariant MHD States |
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127 | (2) |
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6.5.1 Solution of Order ε1 Equations in the Absence of α-Effect |
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127 | (1) |
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6.5.2 The Solvability Condition for Order ε2 Equations: The Operator of the Combined MHD Eddy Diffusion |
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128 | (1) |
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6.6 Complete Expansion of Large-Scale MHD Stability Modes in the Absence of the α-Effect |
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129 | (3) |
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6.7 How Rare is Negative MHD Eddy Diffusivity? |
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132 | (2) |
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134 | (1) |
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7 Weakly Nonlinear Stability of MHD Regimes to Large-Scale Perturbations |
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135 | (26) |
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7.1 Statement of the Problem |
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136 | (4) |
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7.1.1 The Governing Equations |
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137 | (2) |
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7.1.2 Asymptotic Expansion of Weakly Nonlinear Large-Scale Perturbations |
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139 | (1) |
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7.1.3 The Hierarchy of Equations for the Perturbations |
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139 | (1) |
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7.2 Solvability of Auxiliary Problems |
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140 | (3) |
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7.3 Large-Scale Instability in the Presence of the MHD α-Effect |
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143 | (4) |
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7.3.1 Solution of Order ε0 Equations |
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143 | (2) |
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7.3.2 The Solvability Condition for Order ε1 Equations: Linear Equations for Weakly Nonlinear Perturbations |
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145 | (2) |
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7.4 Equations for Weakly Nonlinear Perturbations in the Absence of the MHD α-Effect |
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147 | (10) |
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7.4.1 Solution of Order ε1 Equations |
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147 | (4) |
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7.4.2 Bounds for Linear Problems with the Operator of Linearisation |
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151 | (4) |
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7.4.3 Mean-Field Equations for Large-Scale Perturbations |
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155 | (2) |
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7.5 Computation of Coefficients of the Combined MHD Eddy Operators |
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157 | (2) |
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159 | (2) |
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8 Weakly Nonlinear Stability of Forced Thermal Hydromagnetic Convection |
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161 | (58) |
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8.1 Statement of the Problem |
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163 | (5) |
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8.1.1 The Governing Equations for the Thermal Hydromagnetic Convection |
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163 | (1) |
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8.1.2 Boundary Conditions |
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163 | (1) |
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8.1.3 Equations for Perturbations of a CHM Regime |
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164 | (2) |
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8.1.4 Asymptotic Expansion of Weakly Nonlinear Large-Scale Perturbations |
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166 | (1) |
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8.1.5 The Hierarchy of Equations for Perturbations |
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166 | (2) |
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168 | (8) |
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8.2.1 Reconstruction of the Flow from the Vorticity |
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168 | (2) |
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8.2.2 Solvability of Auxiliary Problems |
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170 | (5) |
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8.2.3 A Bound for a Smooth Vector Field, Solenoidal in Fast Variables |
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175 | (1) |
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8.3 The Combined Magnetic and Kinematic α-Effects |
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176 | (8) |
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8.3.1 Solution of Order ε0 Equations |
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177 | (3) |
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8.3.2 Solvability of Order ε1 Equations |
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180 | (4) |
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8.4 The Symmetries of the CHM Regime Guaranteeing Insignificance of the MHD α-Effect |
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184 | (3) |
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8.5 Mean-Field Equations for Large-Scale Perturbations in the Case of Insignificant α-Effect |
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187 | (12) |
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8.5.1 Solution of Order ε1 Equations |
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187 | (7) |
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8.5.2 A Solvability Condition for Order ε2 Equations: The Equation for the Mean Magnetic Perturbation |
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194 | (2) |
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8.5.3 A Solvability Condition for Order ε3 Equations: The Equation for the Mean Flow Perturbation |
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196 | (3) |
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8.6 Large-Scale Perturbations of Convective Hydromagnetic Regimes Near a Point of Bifurcation |
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199 | (15) |
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8.6.1 Asymptotic Expansion |
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202 | (1) |
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8.6.2 The Order ε0 Equation and Solvability Conditions for Auxiliary Problems |
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203 | (1) |
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8.6.3 The Combined α-Effect |
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204 | (3) |
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8.6.4 Insignificant α-Effect: Solution of Order ε1 Equations |
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207 | (1) |
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8.6.5 Mean-Field Equations Derived from Order ε2 Equations |
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208 | (2) |
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8.6.6 Amplitude Equations Derived from Order ε2 Equations |
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210 | (4) |
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8.7 Computation of Coefficients of the MHD Eddy Operators |
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214 | (2) |
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216 | (3) |
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9 Weakly Nonlinear Stability of Free Thermal Hydromagnetic Convection |
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219 | (24) |
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9.1 Statement of the Problem |
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220 | (1) |
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9.2 Neutral Short-Scale Linear Stability Modes |
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221 | (2) |
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9.3 Solvability of Auxiliary Problems |
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223 | (1) |
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9.4 The Combined α-Effect |
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224 | (3) |
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9.5 Amplitude Equations in the Absence of Significant α-Effect |
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227 | (6) |
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9.5.1 Solvability Conditions for Order ε1 Equations |
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227 | (3) |
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9.5.2 Solution of Order ε1 Equations |
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230 | (3) |
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9.6 Solvability Conditions for Order ε2 and ε3 Equations |
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233 | (2) |
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9.7 An Alternative Amplitude Equation for Steady Symmetric CHM Regimes |
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235 | (4) |
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9.8 Non-zero Initial Mean Flow Perturbation <<Vo>>h |
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239 | (1) |
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240 | (3) |
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10 Magnetic Field Generation by a Two-Scale Flow in an Axisymmetric Volume |
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243 | (34) |
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244 | (9) |
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10.1.1 Functional Sobolev Spaces Wq(ω) |
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244 | (1) |
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10.1.2 The Scale of Functional Sobolev Spaces Hq(ω) for a Fluid Inside a Dielectric |
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245 | (5) |
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10.1.3 Bounds in the Norms of Sobolev Spaces |
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250 | (3) |
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10.2 The Kinematic Dynamo Problem |
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253 | (5) |
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10.2.1 Statement of the Problem |
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253 | (1) |
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10.2.2 Formal Asymptotic Expansion of Large-Scale Magnetic Modes |
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254 | (1) |
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10.2.3 The Hierarchy of Equations for Large-Scale Magnetic Modes |
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254 | (1) |
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10.2.4 Solvability Condition for an Equation ∂2{h}/∂Φ2 = g |
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255 | (1) |
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10.2.5 Derivation of the Limit Operator |
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256 | (2) |
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10.3 Uniform Boundedness and Convergence of Resolvents |
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258 | (5) |
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10.3.1 Uniform Boundedness of Resolvents |
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258 | (2) |
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10.3.2 Convergence of the Resolvents |
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260 | (3) |
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10.4 Complete Asymptotic Expansion of Magnetic Modes with Internal Scaling |
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263 | (6) |
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10.4.1 Solution of the Hierarchy of Equations in all Orders |
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263 | (2) |
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10.4.2 Convergence of Asymptotic Series |
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265 | (4) |
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10.5 Physical Properties of the Axisymmetric Dynamo |
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269 | (5) |
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10.5.1 The Dynamo Mechanism and the Magnetic Reynolds Numbers |
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270 | (1) |
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10.5.2 Comparison with Braginsky's Dynamo |
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271 | (1) |
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10.5.3 Helicity of the Flow Potential and the Coefficient of Magnetic α-Effect |
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272 | (2) |
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274 | (3) |
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11 Magnetic Field Generation by a Two-Scale Flow in a Sphere |
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277 | (20) |
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11.1 Bounds in the Norms of Sobolev Spaces |
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277 | (4) |
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11.2 The Spherical Kinematic Dynamo |
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281 | (5) |
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11.2.1 Statement of the Problem |
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281 | (1) |
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11.2.2 Derivation of the Limit Operator |
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281 | (5) |
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11.3 Uniform Boundedness and Convergence of Resolvents |
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286 | (2) |
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11.3.1 Uniform Boundedness of Resolvents |
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286 | (1) |
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11.3.2 Convergence of the Resolvents |
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287 | (1) |
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11.4 Complete Asymptotic Expansion of Magnetic Modes |
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288 | (3) |
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11.4.1 Solution of the Hierarchy of Equations in all Orders |
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289 | (2) |
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11.4.2 Convergence of Asymptotic Series |
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291 | (1) |
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11.5 Physical Properties of the Spherical Dynamo |
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291 | (3) |
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11.5.1 The Axisymmetric Dynamo |
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292 | (1) |
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11.5.2 Helicity of the Flow Potential and its Relation to the Magnetic α-Effect |
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293 | (1) |
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294 | (3) |
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297 | (6) |
Appendix A Mean-Field and Amplitude Equations for Bifurcations of Three-Dimensional MHD Regimes |
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303 | (6) |
References |
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309 | (16) |
Index |
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325 | |