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Effects of an electromagnetic field on intracellular calcium oscillations in a cell with external noise 下载免费PDF全文
Intracellular calcium ion concentration oscillation in a cell subjected to external noise and irradiated by an electromagnetic field is considered. The effects of the intensity E0, the polar angle θ and the frequency omega of the external electric field on steady-state probability distribution and the mean Ca2+ concentration, respectively, are investigated by a numerical calculation method. The results indicate that (i) variation of ω cannot affect the intracellular calcium oscillation; (ii) the steady-state probability distribution presents a meaningful modification due to the variations of E0 and θ, while variation of θ does not affect the steady-state probability distribution under the condition of a small E0, and E0 cannot affect the steady-state probability distribution either when θ = π/2; (iii) the mean Ca2+ concentration increases as E0 increases when θ < π/2 and, as θ increases, it first increases and then decreases. However, it does not vary with E0 increasing when θ = π/2, but it increases with θ increasing when E0 is small. 相似文献
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强化数学实验教学,提高应用数学能力 总被引:7,自引:0,他引:7
“提高数学修养,培养应用能力”是工科数学教学最根本,也是最终的目标。如何通过教学活动实现这一目标,是当今高等数学教学改革的中心。本以数学实验为切入口,提出通过在高等数学教学中强化数学实验课程的教学,来逐步实现这一目标。 相似文献
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根据 [2 ]中的结论 ,得到一个利用顶点的次数向量求解非平衡分派问题的算法 ,该算法不受退化解的影响 ,且其复杂性为 O(n· m3 ) . 相似文献
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